usical instruments and acoustics (G10)

G   Physics(393877)
G10            usical instruments; acoustics(2944)

ethod of making lists in programs by registration of voice messages by special device with following character recognition // 2642802
FIELD: information technology.SUBSTANCE: method of making lists in programs by registration of voice messages by special device with following character recognition is characterized by the fact that list items are received as short voice messages through a special device containing a microphone, microcontroller, memory, wireless module, battery, one or more activation buttons, the normal state of which is off; when one of the activation buttons is pressed, a special device is activated and the voice message digitized by the microcontroller is recorded into the memory, the wireless module connects to the communication device and sends a digitized voice message over the Internet to the server of the system where it is written to a database with reference to a specific instance a special device; the server of the system through the Internet with the help of an external service performs recognition of the voice message in the text, which is recorded in the database of the server of the system; then the text is sent via the Internet to the user device in the program list attached to the instance of the special device, the program user is able to see the list items received using a special device.EFFECT: increased efficiency of using applications to compile lists, reduced effect of device-inertia, minimized time to enter a list item, minimized number of input actions and simplification of such actions to elementary ones.1 dwg
Adaptive generation of scattered signal in upmixer // 2642386
FIELD: physics.SUBSTANCE: upmixer can be configured to detect cases of transient states of the audio signal. In the cases of transient states of the audio signal, the upmixer can be configured to add signal-adaptive control to the expansion process of the scattered signal, in which M audio signals are output. The upmixer can change the expansion process of the scattered signal over time in such a way that in cases of transient states of the audio signal, the scattered parts of the audio signals can be distributed mainly only to the output channels spatially close to the input channels. In cases of intransitive states of the audio signal, the scattered parts of the audio signals can be distributed in a substantially uniform manner.EFFECT: possibility of dividing the scattered and non-scattered parts of N input audio signals.42 cl, 12 dwg

Audio signal processing method, signal processing unit, stereophonic render, audio coder and audio decoder // 2642376
FIELD: physics.SUBSTANCE: in this audio signal processing method, according to the room impulse response, the audio signal is processed using an early portion of the room impulse response separately from the late room reverberation of the room impulse response, wherein the late reverberation processing comprises forming a scaled reverberant signal, wherein the scaling depends on the audio signal. The processed early portion of the audio signal and the scaled reverberant signal are combined.EFFECT: identity of the late reverberation of the room impulse response to the result of convolution of an audio signal with a full impulse response.19 cl, 10 dwg, 2 tbl

Device and method for providing informed probability estimation and multichannel speech presence // 2642353
FIELD: physics.SUBSTANCE: device for providing a speech probability estimation comprises the first speech probability estimation means for estimating speech probability information indicating the first probability as to whether the scene sound field contains speech or whether the scene sound field does not contain speech. Additionally, the device comprises an output interface for deriving the speech probability estimation depending on speech probability information. The first speech probability estimation means is configured to estimate information of the first speech probability based on, at least, spatial information about the sound field or spatial information about the scene.EFFECT: increasing the accuracy of detecting useful and parasitic sounds.18 cl, 21 dwg
ethod for soundproofing equipment // 2642039
FIELD: construction; acoustics.SUBSTANCE: invention relates to a method for soundproofing equipment with broadband noise attenuation. Method comprises installing a sound-insulating enclosure on the floor of a building on vibration-proof supports made of elastic material. Lining it from the inside with a sound-absorbing element. Enclosure is made in form of a rectangular parallelepiped with a recess in its lower face for the base of the process equipment. Base of process equipment is installed on vibration-proof supports. Supports are based on the floor of the building. Between the base of the process equipment and the recess in the lower face of the rectangular parallelepiped, a gap is made to prevent the transmission of vibrations from the process equipment to the sound-insulating enclosure. Said enclosure has ventilation ducts for preventing overheating of the equipment. Internal walls of the ventilation ducts are treated with a sound-absorbing material and an acoustically transparent material of the "poviden" type. Sound-absorbing element is fixed to the inner surface of the sound-insulating enclosure and is made in form of smooth (14) and perforated (15) surfaces between which a multi-layer sound-absorbing structure is placed. Calculation of the required sound insulation of the cover, as an unpressurised enclosure, is carried out according to the following relationship: , where Rkozh.tr – required sound insulation of the cover, dB; Rsi – average sound insulation of the solid part of enclosures of the i-th cover, dB; is the reverberation coefficient of sound absorption inside the i-th cover, where αo is the reverberation coefficient of sound absorption for enclosures without sound-absorbing material; αm is the reverberation coefficient of sound absorption of sound-absorbing material; ∑Sm is the area of application of sound-absorbing material, m2; τi is the energy transmission coefficient of sound through the muffler of the process hole (for a simple hole without a muffler τi=1); ∑Soi is the total area of process holes for the i-th cover of the machine, m2; ∑Si is the total area of the continuous part of the enclosure, m2. Multi-layer sound-absorbing structure of the sound-absorbing element is made with resonant inserts and is disposed in smooth prismatic surfaces (18) of continuous sections (16) and through resonance holes (23) and (24), serving as the mouths of Helmholtz resonators, they are connected to a layer made of foamed sound absorbing material. Frequency band for damping the sound energy of a multi-layer sound-absorbing structure is determined by the diameter and the number of resonant holes (23) and (24).EFFECT: higher efficiency of noise suppression.1 cl, 2 dwg
ethod of remote interception of confidential voice information circulating in protected room // 2642034
FIELD: radio engineering, communication.SUBSTANCE: invention relates to methods for receiving signals when they leak from a protected room through various technical channels, and can be advantageously used for remote interception of confidential acoustic voice information circulating in the protected room. A fibre-optic link passing in the room adjacent relative to the protected room is used, running along their common wall. In order to convert an acoustic voice signal, its transformation into a vibration signal is used, which then spreads through the wall and, thanks to the mechanical connection between the wall and the devices for fixing the fibre-optic link, running in the adjacent room along the common wall, affects on the fastening devices, and through them - on the fibre-optic link.EFFECT: providing interception in the absence of a fibre-optic link in a protected room.5 dwg

Principle for audio coding and decoding for audio channels and audio objects // 2641481
FIELD: physics.SUBSTANCE: audio encoder for encoding the input audio data to receive the output audio data comprises an input interface for receiving a plurality of audio channels, a plurality of audio objects, and metadata associated with one or more of the plurality of audio objects; a mixer for reducing a plurality of objects and a plurality of channels in such a way as to obtain a plurality of pre-merged channels, wherein each pre-merged channel containes audio data of the channel and audio data of, at least, one object; a basic encoder for basic encoding of the input data of the base encoder; and a metadata compression module for compressing metadata associated with one or more of a plurality of audio objects.EFFECT: increasing the compression efficiency with high sound quality.24 cl, 11 dwg

ethod and device for processing signals // 2641466
FIELD: physics.SUBSTANCE: method includes: determining the total number of bits to be allocated corresponding to the sub-bands of the current frame; allocating the primary bits for the subbands according to the total number of bits; determining the number of primary information units for each subband that is allocated to the primary bits to obtain the total number of redundant bits of the current frame and the number of information units corresponding to each subband; selecting a subband for extracting secondary bits from the subbands according to a secondary bit allocation parameter comprising one of the total number of redundant bits or a subband characteristic for each subband; allocating secondary bits for the subbands to extract the redundant bits and obtaining the number of secondary bits for each subband; and determining the number of secondary information units for each subband in order to retrieve the number of information units corresponding to each subband from the subbands to extract the secondary bits.EFFECT: improving the quality of encoding and decoding audio signals and eliminating the bit loss.20 cl, 14 dwg
ethod, device and system for processing audio data // 2641464
FIELD: physics.SUBSTANCE: noise frame of an audio signal is received. The current noise frame is expanded to the noise signal of the low frequency band and the noise signal of the high frequency band. The noise signal of the low frequency band is encoded and transmitted by using the first intermittent transmission mechanism. The noise signal of the high frequency band is encoded and transmitted by using the second intermittent transmission mechanism.EFFECT: decrease in the bandwidth and an improvement in the quality of the audio data encoding.26 cl, 9 dwg

Decorrelator structure for parametric recovery of sound signals // 2641463
FIELD: physics.SUBSTANCE: coding system encodes multiple audio signals (X) as a downmix signal (Y) together with the coefficients (P, C) of the controlled and forward up-mix. In the decoding system, the pre-multiplying unit calculates the intermediate signal (W) by linear mapping the downmix signal in accordance with the first set of coefficients (Q); the decorrelating section outputs the decorrelated signal (Z) based on the intermediate signal; the controllable up-mixer section calculates a controlled up-mix signal; the forward-up-mixing section calculates the up-mix signal; the summation section provides a multidimensional reconstructed signal ( ) by summing the signals of the controlled and forward up-mix; and the converter calculates the first set of coefficients based on the coefficients of the controlled and forward up mix and feeding it to the pre-multiply block.EFFECT: improving the accuracy of the audio signal recovery.18 cl, 4 dwg

Audio encoder, audio decoder, method of providing coded audio information, method of providing decoded audio information, computer program and coded presentation using signal-adaptive bandwidth extension // 2641461
FIELD: physics.SUBSTANCE: audio encoder comprises a low-frequency encoder for obtaining an encoded representation of the low-frequency portion and a unit for providing bandwidth extension information based on the input audio information. The audio encoder is also configured to selectively include the bandwidth extension information in the encoded audio information. The audio decoder comprises a low-frequency decoder to obtain a decoded representation of the low-frequency portion and an extension of the bandwidth to obtain a blind-bandwidth expansion signal for portions of audio content, for which the bandwidth expansion parameters are not included in the coded audio information and to obtain a bandwidth extension signal for portions of audio content, for which the parameters of the bandwidth extension are included in the coded audio information.EFFECT: providing bandwidth expansion to improve the tradeoff between the bit rate and the sound quality.38 cl, 8 dwg
Sound coding device and decoding device // 2641265
FIELD: physics.SUBSTANCE: method of decoding a coded bit of the audio stream in the processing system of audio signals is disclosed, wherein the method comprises: extracting the first shape encoding signal from the encoded bit audio stream, containing the spectral coefficients corresponding to the frequencies to the first channel separation frequency; performing parametric decoding on the second channel separation frequency to generate the reconstructed signal. The second channel separation frequency is higher than the first channel separation frequency and the parametric decoding uses reconstruction parameters derived from the encoded bitstream to generate the reconstructed signal; extracting the second shape encoding signal from the encoded bit audio stream, comprising spectral coefficients corresponding to a subset of frequencies above the first channel separation frequency; alternating the second shape encoding signal with the reconstructed signal to generate an interlaced signal and combining the interlaced signal with the first shape encoding signal.EFFECT: decoding the encoded bit audio stream in the audio signal processing system.16 cl, 8 dwg

Device and method for processing sound signal using error signal due to spectrum aliasing // 2641253
FIELD: physics.SUBSTANCE: device for processing audio signal, containing a sequence of blocks of spectral values, includes a processor for calculating a signal under the influence of aliasing using at least one first modification to the first block of a sequence of blocks, and using at least one different second modification value for the second block of a sequence of blocks and for estimating the error signal due to aliasing, representing the error due to aliasing in the signal influenced by aliasing. The combination module combines the signal influenced by aliasing and the error signal due to aliasing.EFFECT: increasing the efficiency of audio signal processing.13 cl, 16 dwg

Adaptive band extension and device therefor // 2641224
FIELD: physics.SUBSTANCE: method includes decoding the flow of audio bytes in order to form a decoded audio signal of the low frequency band and the excitation spectrum in the low frequency band corresponding to the low frequency band. The frequency subband area is selected from the low frequency bands by using the parameter that specifies information of the energy spectral envelope of the decoded audio signal of the low frequency band. Excitation spectrum in the high frequency band is formed for high frequency band by duplicating the excitation spectrum in the frequency subband from the selected area of the frequency subband to the area of the high frequency band corresponding to the high frequency band. Using the formed excitation spectrum in the high frequency band, the audio signal of the extended high frequency band is formed by applying a spectral envelope of the high frequency band. The audio signal of the extended high frequency band is summed with the decoded audio signal of the low frequency band in order to form an output audio signal having an extended frequency band.EFFECT: ensuring the formation of an extended frequency band in the decoder.19 cl, 18 dwg
ethod of automatic translation of oral speech from one language to another and device for its implementation // 2641222
FIELD: radio engineering, communication.SUBSTANCE: method is carried out by translating spoken language from one language into another language which is realized using a device made in the form of two modules - a unit for processing signals from microphones and an electronic device containing a computer with appropriate software that can be connected to each other via wire or wireless links. The microphone processing unit is designed to perform part of the operations for processing signals from the microphone outputs and controlling the operation of the signal emitters, and it is performed with the possibility of connecting to it at least two microphones and signal emitters and performing it in the form of two channels for processing the signals of the microphones, Switching, interconnected so that it is possible to automatically alternately switch electrical signals generated by microphones to one common microphone Output of the microphone signal processing unit.EFFECT: increasing the accuracy and speed of translation of spoken language from one language to another.18 cl, 2 dwg
Audio encoding device, audio encoding method, audio encoding programme, audio decoding device, audio decoding method and audio decoding programme // 2640743
FIELD: physics.SUBSTANCE: audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from the prediction signal. The receiving device of the audio signal to decode the audio-code and audio signal output includes a buffer of the audio-code that detects a packet loss based on the reception status of the audio pack, a decoding unit of audio-parameters that decodes the audio-code, when the audio pack is adopted correctly, a decoding unit of side information, which decodes the side information, when the audio pack is adopted correctly, a collection unit of side information, which collects the side information obtained by decoding side information, a processing unit of missing audio-parameters and an audio synthesis unit.EFFECT: restoration of sound quality without increasing the algorithmic delay, when there is a loss of the packet when encoding audio.43 dwg

Extraction of reverberative sound using microphone massives // 2640742
FIELD: physics.SUBSTANCE: method contains the stages, on which the spatial coherence between the first phase of the scattered sound in the first microphone signal and the second phase of the ambient sound in the second microphone signal is estimated. The first microphone signal is captured by the first microphone, and the second microphone signal is captured by the second microphone, which is located at a distance from the first microphone. The method additionally contains a stage, at which the linear restrictions of the filtration coefficients of the ambient sound filter is determined, and the linear constraint is based on spatial coherence. The method also comprises the step of calculating at least one of the signal statistics and noise statistics with respect to the first microphone signal and the second microphone signal. The method also contains a stage, at which the coefficients of the filter filtration of ambient sound filter is determined by solving the optimisation problem against at least one of signal statistics and noise statistics, given the linear restrictions of the filtration coefficients.EFFECT: ensuring the capture of scattered sound coming to the microphone array from all directions, by obtaining a better directional pattern of the scattered sound filter.15 cl, 8 dwg

Improved quantizer // 2640722
FIELD: physics.SUBSTANCE: quantization module configured to quantize the first coefficient from the coefficient block. This coefficient block contains a number of coefficients for a number of corresponding frequency resolution elements. The quantization module is configured to create a set of quantizers. This set of quantizers contains a number of different quantizers associated with a number of different signal-to-noise ratios, respectively, called SNRs. This series of different quantizers contains a quantizer with noise coverage; one or more quantizers with the addition of pseudorandom noise; and one or more quantizers without the addition of pseudorandom noise. The quantization module is also configured to determine the SNR pointer, serving as a sign of SNR assigned to a specified first coefficient, and to select the first quantizer from a set of quantizers based on the SNR index. In addition, the quantization module is configured to quantize the said first coefficient using the said first quantizer.EFFECT: increasing the flexibility in assuming different data rates and different levels of distortion.20 cl, 19 dwg

Device for coding audio signal having plurality of channels // 2640650
FIELD: physics.SUBSTANCE: device comprises a reception unit for receiving phase information, a transient process separating unit, a transient decorrelator, the second decorrelator, and a combiner unit, in which the transient process separating unit is adapted to divide the input signal into the first signal component and the second signal component such that the first signal component contains parts of the input signal transient process, and so that the second signal component contains signal parts without the input signal transient process. A decorrelator of the transition process is adapted to apply the phase information received by the reception unit to the transient process signal component.EFFECT: increasing the data transfer rate due to different processing of the transient process signal and the signal that does not contain the transient process.7 cl, 6 dwg

Device and method of transforming first and second input channels, at least, in one output channel // 2640647
FIELD: physics.SUBSTANCE: spatial encoding of audio begins with a number of source inputs, such as five or seven input channels, which are identified by placing them in the layout for playback as a left channel, a central channel, a right channel, a left surround channel, a right surround channel, and a low frequency enhancing channel (LFE). In the device, each input channel and each output channel has a direction, in which the associated loudspeaker is located relative to the center position of the listener, wherein the device is configured to convert the first input channel to the first output channel from the configuration of the output channels.EFFECT: improved audio reproduction in case of format conversion between different speaker channel configurations.4 cl, 14 dwg

Device and method for decoding coded audio with filter for separating around transition frequency // 2640634
FIELD: physics.SUBSTANCE: device for decoding an encoded audio signal containing the encoded base signal, contains: a base decoder for decoding the coded reference signal to obtain the decoded primary signal; a module for generation of fragments for the formation of one or more spectral fragments having frequencies not included in the decoded reference signal, using the spectral part of the decoded reference signal; and a separation filter for the spectral filtration for separating the decoded reference signal and the first frequency of the fragment, with the frequencies going from the interval filling frequency of the signal absence to the upper boundary frequency, or for the spectral filtration for separating the first frequency part and the second frequency part.EFFECT: providing the possibility of encoding audio signals over a wide range of bit rates.15 cl, 35 dwg

Plucked musical instrument - acoustic guitar // 2640169
FIELD: physics.SUBSTANCE: guitar consists of a neck with an upper nut and frets installed on it, a neck head with pins located thereon, strings, a body consisting of a shell, an upper, and a lower deck. The lower nut is installed separately on the outer surface of the deck.EFFECT: reduction in the energy losses of string vibrations transmitted to the upper deck, an increase in the amount of energy of the strings converted into sound waves, thereby improving all the acoustic characteristics of the guitar.7 cl, 6 dwg

Hybrid speech amplification with signal form coding and parametric coding // 2639952
FIELD: physics.SUBSTANCE: hybrid speech amplifying method uses parametric encoding amplification for some signal states and waveform encoding amplification for the remaining signal states. Other aspects are methods for generating a bitstream indicating a sound program including speech and other content such that hybrid speech amplification can be performed in relation to the program, a decoder including a buffer that stores, at least, one segment of the encoded audio bitstream generated by any embodiment implementing the inventive method, and a system or a device configured to perform any embodiment of the inventive method. At least, some of the speech amplifying operations are performed by the receiving audio decoder using the medium/side channel speech metadata generated by the upstream audio encoder.EFFECT: increasing the audibility of the audio signal speech contents with respect to the non-speech audio content.37 cl, 11 dwg

Combined sound-absorbing panel // 2639759
FIELD: construction.SUBSTANCE: panel is described, made in the form of a volumetric shell structure, which comprises an outer surface facing soundproof air-impermeable or sound-transparent air-blown film, foil, fabric, or non-woven fabric layer and/or an installed outer facing translucent structural element, the inner cavity of the volumetric shell structure is filled with a sound-absorbing substance formed by isolated crushed fragmented sound-absorbing elements, wherein in the inner cavity of the volumetric shell structure, filled with a sound-absorbing substance formed by isolated crushed fragmented sound-absorbing elements, there are hollow moulded cavity reservoirs in the form of communicating chamber and throat parts of Helmholtz acoustic resonators, while the walls of the chamber and throat sections of the Helmholtz acoustic resonators are lined with an airtight film elastic sound-proof shell adhesive-fastened from the inside on the surfaces of the hollow moulded cavity reservoirs forming the communicating chamber and throat parts of the Helmholtz acoustic resonators.EFFECT: improvement of sound-absorbing properties.19 cl, 34 dwg

Device and method for coding/decoding for expansion of high-frequency range // 2639694
FIELD: physics.SUBSTANCE: encoder can downsample the input signal, perform basic encoding of the input signal with reduced sampling, perform the frequency conversion of the input signal and perform the bandwidth extension encoding using the base signal of the input signal in the frequency domain.EFFECT: extending the high-frequency range by extracting the main signal of the input signal and adjusting the energy of the input signal using the tonality of the high-frequency range of the input signal and the key tone.7 cl, 38 dwg

Text processing method (versions) and constant machine-readable medium (versions) // 2639684
FIELD: physics.SUBSTANCE: text processing method that is executed on a computer device comprising a memory on which one or more rules of the phrase transformation is stored that were generated on the basis of the analysis of the sets of signs, including a set of signs of the source word associated with the source word of the phrase source, and a set of signs of the target word associated with the target word of the target phrase, includes the following steps: receiving a text phrase; determining that the similarity of the text phrase with the source phrase exceeds the threshold value based on at least grammatical, or at least semantic analysis of the text phrase and the source phrase; and applying one or more rules of the phrase transformation to the text phrase to generate a transformed text phrase.EFFECT: providing more accurate text processing.27 cl, 10 dwg

ethod and device for normalized playing audio mediadata with embedded volume metadata and without them on new media devices // 2639663
FIELD: physics.SUBSTANCE: device decodes a bitstream containing audio data and volume metadata containing a reference loudness value to generate an audio output signal. The device comprises a signal processor comprising a gain control device configured to adjust the output audio signal level. The gain control device includes a reference volume decoder configured to generate a loudness value, a gain calculator configured to calculate the gain value based on the loudness value and based on the sound power control value, and a volume processor configured to control the volume of the audio output signal based on the gain value.EFFECT: providing the ability to normalize the playback volume both the content containing metadata of loudness, and the content that does not contain volume metadata.16 cl, 5 dwg

Coder, decoder and methods for backward compatible dynamic adaptation of time/frequency authorization for spatial coding of audio objects // 2639658
FIELD: physics.SUBSTANCE: decoder for generating an output audio signal comprises one or more audio output channels, a downmix signal including a plurality of time domain downmix samples, a window sequence generator for determining a plurality of analysis windows, each of the analysis windows comprising a plurality of downmix samples of the time domain of the downmix signal. The decoder contains a module of t/f-analysis for converting the said plurality of samples of down-mixing the temporal region of each analysis window of the above-mentioned plurality of analysis windows from time domain in frequency-time domain depending on the window length of the said analysis window to obtain a transformed downmix. In addition, the decoder comprises an up-mixer.EFFECT: expanding the possibilities of multi-channel reproduction of individual audio content in order to improve the auditory sense.17 cl, 22 dwg

Device for transforming linear prediction coefficients and method for transforming linear prediction coefficients // 2639656
FIELD: physics.SUBSTANCE: converting device converts the first linear prediction coefficients computed at the first sampling frequency into the second linear prediction coefficients at the second sampling frequency different from the first sampling frequency and comprises: a means for calculating, on the real axis of the unit circle, a power spectrum corresponding to the second linear prediction coefficients at the second sampling frequency, based on the first linear prediction coefficients; a means for calculating, on the real axis of the unit circle, the autocorrelation coefficients from the power spectrum; and a means for converting the autocorrelation coefficients to the second linear prediction coefficients at the second sampling frequency.EFFECT: effective reduction in the amount of computation, when converting the linear prediction coefficients.2 cl, 6 dwg

ultilayer perforated sound absorber // 2639594
FIELD: chemistry.SUBSTANCE: sound absorber contains a thermoformable absorber and a microperforated film that are connected to each other. The microperforated film consists of two-layer more high-melting layer of polymer material equipped with a specific hole geometry, and the second layer of the polymer material, more low-melting compared with the first layer of the polymer material. The low-melting layer of the polymer material includes an intermediate layer of the absorber components and low-melting polymer material adjacent to the absorber, and the ratio of hydraulic resistance of the covering layer of the layer of more high-melting polymer material and the intermediate layer to the absorber is from 1:3 to 1:30, and the total hydraulic resistance R of the absorber is in the range of R=800 Nsm-3 to R=8000 Nsm-3. The first high-melting layer of the polymer material includes polyamide, polyethylene terephthalate, polyetherimide, polysulfone, polyethersulfone and/or polyetheretherketone. The second layer of the polymer material, more low-melting than the first layer of the polymer material, contains polyethylene and polypropylene, including their composition and copolymers, also with polyamides and/or polyesters; polyurethane resins; melamine resins and/or epoxy resins.EFFECT: improving the efficiency of noise absorption.15 cl, 2 dwg
Soundproofing method // 2639217
FIELD: construction.SUBSTANCE: in the equipment soundproofing method consisting in that the soundproofing enclosure will be installed on building flooring by at least four antivibration bearings made of elastic material, such as soft rubber, polyurethane and coat it on the inner side with sound-absorbing element, the soundproofing enclosure is made in the form of a rectangular parallelepiped with a cutout in its lower edge for the technological equipment base. The technological equipment base is installed on at least four antivibration bearings, which are based on the building flooring. Between the technological equipment base and the cutout in the lower edge of the rectangular parallelepiped, a gap is made to prevent the vibrations transfer from the technological equipment to the soundproofing enclosure where ventilation channels are made to eliminate equipment overheating. The internal walls of the ventilation ducts are treated with a sound-absorbing material and an acoustically transparent material of "poviden" type. The sound-absorbing element is fixed to the inner surface of the soundproofing enclosure and is made in the form of smooth and perforated surfaces between which a multi-layer sound-absorbing structure is placed. Calculation of the required soundproofing of the casing, as an untightened enclosure, dB, is carried out according to the following relations: . The multylayer sound-absorbing structure of the sound-absorbing structure element, which is fixed on the inner surface of the soundproofing enclosure, is made in the form of four layers: the first layer is reflecting, it's made solid and profiled, shaped of complex polygon profile and consists of inclined side planes, connected at the lower part by horizontal edges and between the side planes and the rigid wall, there is the second layer made from sound absorbing material. Between the perforated wall and the sound-reflecting layer with an air gap relatively to the sound-reflecting layer, there is the third discontinuous layer from the soft sound-absorbing material, which is fixed to the perforated wall and is in the form of polyhedrons with equidistant and congruent surfaces, located below the corresponding side planes of sound-absorbing layer.EFFECT: increased efficiency of sound suppression.3 dwg
Sound insulating enclosure with aerodynamic silencers // 2639216
FIELD: machine engineering.SUBSTANCE: sound-insulating enclosure with aerodynamic silencers made in the form of a rectangular parallelepiped enclosing the process equipment, the process equipment is mounted on at least four vibration-insulating supports which are based on the floor of the building. Between the base of the process equipment and the cutout in the lower face of the rectangular parallelepiped, a gap is made to prevent the transfer of vibrations from the process equipment to the sound-insulating enclosure, and a fan is installed inside the enclosure to provide required microclimate when performing a technological process, the sound-insulating enclosure is provided with ventilation channels to eliminate equipment overheating. The inner walls of the ventilation channels are treated with a sound-absorbing material and an acoustically transparent material of "Poviden" type. To reduce the aerodynamic noise of the ventilation system, the noise silencers are provided in the enclosure and mounted at the inlet and outlet ventilation channels, respectively. A sound-absorbing element is fixed on the inner surface of the sound-insulating enclosure in the form of smooth and perforated surfaces, between which a multi-layer sound-absorbing structure is arranged, the silencers of ventilation system aerodynamic noise are installed at the inlet and outlet ventilation channels, respectively, are made in the form of chamber noise silencers, each of which contains a cylindrical body rigidly connected to the end inlet and outlet branch pipes, with a central partition, from the inside the housing is lined with sound-absorbing material, the central partition is made in the form of a sound-absorbing element having a framelined on both sides with a sound-absorbing material. Skeleton sound absorbing element is pivotable in a plane perpendicular to the direction of motion of the aerodynamic flow. The mineral wool on the basalt basis of the Rockwool type, or the mineral wool of the URSA type, or basalt wool of the P-75 type, or the glass wool with the glass fiber lining, or the foamed polymer, for example, polyethylene or polypropylene is used as the sound-absorbing material. The surface of the fiber absorbers is treated with the porous air-permeable paints (for example, "Acutex T") or covered with the air-permeable fabrics or non-woven materials, for example "Lutrasil".EFFECT: improved noise silencing efficiency.2 cl, 2 dwg
Sound-insulating enclosure // 2639207
FIELD: machine engineering.SUBSTANCE: sound-insulating enclosure made in the form of a rectangular parallelepiped enclosing the process equipment, the process equipment is mounted on at least four vibration-insulating supports which are based on the floor of the building. A gap is made between the base of process equipment and a cut in the lower edge of the rectangular parallelepiped to prevent transmission of vibrations from the process equipment to the sound-insulating enclosure. Ventilation channels are made in a sound-insulating guard to prevent equipment overheating. The inner walls of the ventilation channels are treated with a sound-absorbing material and an acoustically transparent material of "Poviden" type. A sound-absorbing element in the form of smooth and perforated surfaces is fixed on the inner surface of the sound-insulating enclosure. The sound-absorbing element is made in the form of smooth and perforated surfaces, between which a multilayer sound-absorbing structure is placed, which is made of a complex shape and represents alternation of solid sections and hollow sections. Solid sections are formed by smooth prismatic surfaces arranged perpendicular to the smooth and perforated surfaces and fixed to the smooth surface, and two surfaces of complex shape related thereto and inclined with respect to smooth prismatic surfaces and having smooth surface on one side and toothed or wavy surface on the other side, relief sound-absorbing elements are attached to the smooth surface, for example, in the form of tetrahedrons. As the sound-absorbing material, the material based on aluminium-containing alloys is used, followed by its filling with titanium hydride or air with the density within 0.5…0.9 kg/m3 with the following strength properties: the compressive strength within 5…10 MPa, the bending strength within 10…20 MPa, for example the foam aluminium. The inner surface of the perforated surface facing the sound-absorbing structure is lined with an acoustically transparent material, and the hollow sections are filled with sound-absorbing material. Vibration insulator of vibration insulation system, on which the process equipment is installed and which is based on the floor of the building, comprises a body made in the form of a supporting elements comprising washers, bolts and nuts, positioned coaxially and opposite to elastic element in its upper and lower parts, and made in the form of a shell made of elastomer, consisting of flat mounting surfaces, on which the support elements are fixed, and a cylindrical surface located in the central perpendicular section relative to axes of support elements and conical surfaces positioned between the mounting surfaces and the cylindrical surface and connected thereto into a single shell.EFFECT: improved noise silencing efficiency.2 cl, 4 dwg
Sound-insulating enclosure of process equipment // 2639049
FIELD: machine engineering.SUBSTANCE: sound-insulating enclosure is produced in the form of a rectangular parallelepiped enclosing the process equipment. The process equipment is installed on the vibration isolating supports, which are based on the floor of the building. A gap is made between the base of equipment and a cut in the lower edge of the rectangular parallelepiped to prevent transmission of vibrations from the equipment to the sound-insulating enclosure. Ventilation channels are made in a sound-insulating guard to prevent equipment overheating. The inner walls of the ventilation channels are treated with a sound-absorbing material and an acoustically transparent material of "Poviden" type. A sound-absorbing element in the form of smooth (14) and perforated (15) surfaces is fixed on the inner surface of the sound-insulating enclosure between which a multilayer sound-absorbing structure is placed, which represents alternation of solid (16) sections and hollow (17) sections. The solid sections (16) are formed by smooth prismatic surfaces (18) located perpendicularly to the smooth (14) and perforated (15) surfaces and fixed to the smooth surface, and by two inclined, relatively smooth prismatic surfaces (18), the surfaces (19) of complex shape having smooth surface on one side and toothed or wavy surface on the other side. The relief sound-absorbing elements (14) are attached to the smooth surface, for example in the form of the tetrahedra. Material based on aluminium-containing alloys is used as sound-absorbing material which is filled with titanium hydride or air with a density in the range 0.5…0.9 kg/m3 with compressive strength within 5…10 Mpa, and strength on a bend within 10…20 Mpa, for example, aluminium foam or basalt-based mineral wool of Rockwool type, or mineral wool of URSA type, or basalt wool of P-75 type, or glass wool with glass felt lining, or foamed polymer, for example, polyethylene or polypropylene. The material of the perforated surface is made of hard, decorative vibration cushioning materials, for example plasticate of "Agate", "Antivibrit", "Shwim" type. The inner surface of the perforated surface, facing the sound-absorbing structure is faced with the acoustically transparent material, for example, the glass fiber of EZ-100 type or the polymer of "Poviden" type. The hollow sections are filled with the sound-absorbing material, for example, with the construction foam. The structure of the sound-absorbing element is made with the resonance inserts (21) and (22) located in the smooth prismatic surfaces (18) of solid sections (16) connected to the layer (17) made of foamed sound-absorbing material by means of resonance holes (23) and (24) performing functions of Helmholtz resonator necks. The frequency band for damping the sound energy of a multilayer sound-absorbing structure is determined by the diameter and the number of resonant holes (21) and (22).EFFECT: improved noise silencing efficiency.2 dwg
System of access control and management based on biometric technologies for authenticating person by voice and by face // 2638775
FIELD: physics.SUBSTANCE: system of access control and management based on biometric technologies for authenticating a person by voice and by face includes means for authenticating the user, authenticating a person and a program part, while means for authenticating a person by voice and by face are performed in the form of an accounting unit, an identification unit, a mobile subsystem, subsystems of mathematical calculations, subsystems of the user interface, a control subsystem, and all components of the system are designed to interact with each other with a computer network based on TCP/IP stack protocols; the mobile subsystem provides the collection of biometric material (samples) - phonograms of voice and face images; further, the samples go to the identification block, where the biometric identification of objects occurs by means of a mathematical calculation subsystem by comparing their voice and portrait samples obtained from the corresponding sound recordings and video streams and/or photographic images with the reference voice and portrait samples in the recording unit; the operator work with the system is carried out through a subsystem of the user interface based on the web interface, which provides easy access, configuration and decision-making based on the results of identification; the control subsystem provides the dispatching of functional processes and performs constant dynamic monitoring.EFFECT: registration and identification of people in various situations when it is necessary to make mandatory registration and provision of data on people, as well as their identification, automatic registration of persons by photo, mobile devices, automatic recording of people's voices using a telephone channel or microphone, recognition of faces or voices in real time.3 cl, 4 dwg

Device and method for coding signals // 2638752
FIELD: physics.SUBSTANCE: method is implemented by predicting the comfort noise that is generated by the decoder according to the currently input frame in the case, in which the currently input frame is encoded into a silence descriptor (SID) frame and by determining the actual silence signal. The currently input frame is a silence frame, determining the degree of deviation between the comfort noise and the actual silence signal, determining that the encoding method of the currently input frame is a coding technique with a tightening frame, according to the degree of deviation and coding the currently inputted frame according to the encoding technique with a snap frame.EFFECT: expanding the arsenal of technical means for coding signals.21 cl, 15 dwg

Harmonic transformation improved by cross-product // 2638748
FIELD: physics.SUBSTANCE: system for generating a high-frequency signal component from the low-frequency signal component includes an analysis filter unit that generates a set of signals of the analyzed subbands of the low-frequency signal component. It also includes a non-linear processing unit for generating a synthesized subband signal with a synthesized frequency by modifying the phase of the first and the second signals of the analyzed subbands from the set of signals of the analyzed subbands and combining the signals of the analyzed subbands with the modified phase. It also includes a synthesizing filter unit for generating a high-frequency signal component from the synthesized subband signal.EFFECT: improving the quality of the encoded audio signal.22 cl, 30 dwg

Device and method for reducing quantization noise in decoder of temporal area // 2638744
FIELD: physics.SUBSTANCE: decoded excitation in the time domain is converted into an excitation in the frequency domain. A weight mask is formed to reconstruct the spectral information lost in the quantization noise. The excitation in the frequency domain is modified in order to increase the dynamics of the spectrum by applying a weight mask. The modified excitation in the frequency domain is converted into a modified excitation in the time domain. The method and device can be used to improve reproduction of music content by codecs based on linear prediction (LP). Optionally, the synthesis of the decoded excitation in the time domain can be classified into one of the first set of excitation categories and the second set of excitation categories.EFFECT: improving the quality of the encoded speech signal.31 cl, 4 tbl, 4 dwg

Coding of spectral coefficients of audio signal spectrum // 2638734
FIELD: physics.SUBSTANCE: in this device, the adjustment of the relative spectral distance between the pre-encoded/decoded spectral coefficient and the currently-encoded spectral coefficient depends on information regarding the spectrum shape. Information regarding the spectrum shape may contain a measure of the pitch or periodicity of the audio signal, the measure of inter-harmonic distance spectrum of the audio signal and/or the relative location of the formant and/or troughs of the spectral envelope of the spectrum, and based on this knowledge, the spectral neighbourhood, which is used in order to form the context of spectral coefficients to be coded/decoded in a given time, can be adapted to the particular form of the spectrum.EFFECT: increasing the efficiency of coding the spectral coefficients of the audio signal by encoding, decoding the spectral coefficient to be encoded, decoding at a given time, by entropy encoding, decoding.22 cl, 22 dwg

Transforming coding/decoding of harmonic sound signals // 2637994
FIELD: physics.SUBSTANCE: encoder for encoding coefficients (Y(k)) of frequency conversion of a harmonic audio signal includes the following elements: a location determinant for spectral peaks having values greater than a predetermined frequency dependent threshold. An encoder of the peak areas including and surrounding the detected peaks. A low-frequency coefficient set encoder is outside the peak areas and below the transition frequency, which depends on the number of bits used to encode the peak areas. A noise level enhancement encoder configured to encode a noise gain coefficient of, at least, one high frequency set of still unencoded coefficients outside the peak areas.EFFECT: improving the quality of the encoded harmonic sound signal.10 cl, 23 dwg

ethod and device for predicting signal of excitation of upper band // 2637885
FIELD: physics.SUBSTANCE: set of spectral frequency parameters, which are arranged in the order of the frequencies, are received according to the received bit stream of the lower frequency band. The parameters of the spectral frequency contain the parameters of the linear spectral frequency, LSF, the lower frequency band or the parameters of the spectral frequency of the immittance, ISF, the lower frequency band. Differences in the spectral frequency parameters between each two spectral frequency parameters that have the same position interval in some or all of the said spectral frequency parameters are calculated. The search range for searching for the minimum difference in the spectral frequency parameters is determined. The search range indicates the part of the calculated spectral frequency parameter differences. The portions of the calculated spectral frequency parameter differences are corrected using a correction factor to obtain a plurality of corrected spectral frequency parameter differences.EFFECT: improving the quality of the excitation signal of the upper band.20 cl, 11 dwg

Generation of interactive recommendations for chat information systems // 2637874
FIELD: information technology.SUBSTANCE: user input is received based on the speech. At least a part of the user input based on speech is recognized to generate the recognized input. At least one response to the recognized input is provided. At least one initiating event is identified. At least one interactive recommendation is generated at least partly on the basis of the identification. At least one interactive advice is provided to the user through a user device.EFFECT: increase the effectiveness of the user interaction with the chat information system.25 cl, 10 dwg
Plate castanet with given sound // 2637180
FIELD: physics.SUBSTANCE: plate castanet contains three interconnected plates, the middle of which includes the actual body of the plate and a handle. Each plate has, on the one hand, a constant thickness chosen as a reference and, on the other hand, the plate thickness is equal to E×n, where E is the reference or calculated plate thickness, and n is the tempered semitone coefficient = 1.05946. The plates are fastened from the thinned side.EFFECT: ensuring the ability to customize the castanets at the stage of manufacturing to the right note.2 cl, 3 dwg

Device and method for coding // 2636697
FIELD: physics.SUBSTANCE: this group of inventions involves performing the correct allocation of quantization bits for the spectral coefficients of the audio signal, thereby improving the quality of the signal received by the decoder by decoding. The method includes: after splitting the spectral coefficients of the current data frame into subbands, obtaining the values of the quantized frequency envelopes of the subbands; changing the values of the quantized frequency envelopes of the subbands in the first number in the subbands; allocating quantization bits to subbands according to the changed values of the quantized frequency envelopes of the subbands in the first quantity; quantizing the spectral coefficient of the subband, to which the quantization bit is allocated, on the subbands; and recording the quantized spectral subband coefficient, to which the quantization bit is allocated, into a bitstream.EFFECT: increasing the efficiency of compression coding and improving the signal quality.28 cl, 7 dwg

Decision on presence/absence of vocalization for speech processing // 2636685
FIELD: physics.SUBSTANCE: speech processing method includes the steps of: determining the presence/absence parameter of the vocalization in the current frame of the speech signal, which is a combined parameter reflecting the product of the periodicity parameter and the spectral slope parameter; determining the smoothed presence/absence parameter of the vocalization to include information of the presence/absence parameter of the vocalization in the preceding frame; calculating the difference between the presence/absence parameter of the vocalization in the current frame and the smoothed parameter, and determining, whether the current frame contains unvoiced speech or voiced speech, using the calculated difference as the decision parameter.EFFECT: improved and more reliable detection of unvoiced, voiced speech.20 cl, 15 dwg
Presentation of multichannel sound using interpolated matrices // 2636667
FIELD: physics.SUBSTANCE: method for encoding an N-channel audio program comprises the steps of: determining the first cascade of elementary matrices N×N, which, when applied to discrete values of N encoded signal channels, realizes the first mixing of audio content in M output channels. The first mixing corresponds to a time-varying mixing A(t); determining the interpolation values, which, together with the first cascade of elementary matrices and the interpolation function defined in the subinterval, indicate a sequence of stages of the updated elementary matrices N×N, so that each cascade of the updated elementary matrices, when applied to discrete values of N coded signal channels, implements updated mixing, N coded channel signals in M output channels; generating an encoded bit stream that indicates coded audio content, interpolation values, and the first cascade of elementary matrices.EFFECT: elimination of unwanted artifacts in the encoding, decoding of the sound program.59 cl, 8 dwg

Speech signal encoding device using acelp in autocorrelation area // 2636126
FIELD: physics.SUBSTANCE: speech signal encoding device by determining the codebook vector of the speech encoding algorithm comprises a matrix determining module for determining the autocorrelation matrix R and a codebook determining module for determining the codebook vector, depending on the autocorrelation matrix R. The matrix determining module is configured to determine an autocorrelation matrix R by determining the vector coefficients for the vector r. The autocorrelation matrix R contains a plurality of rows and a plurality of columns. The vector r denotes one of the columns or one of the rows of the autocorrelation matrix R, where R(i, j)=r(|i-j|), where R(i, j) denotes the coefficients of the autocorrelation matrix R, where i is the first index denoting one from the plurality of rows of the autocorrelation matrix R, and where j is the second index denoting one of the plurality of columns of the autocorrelation matrix R.EFFECT: increasing the encoding efficiency.24 cl, 3 dwg
Prediction based on model in filter set with critical discreteization // 2636093
FIELD: physics.SUBSTANCE: signal of the first audio subband is determined using a set of analyzing filters comprising a series of analyzing filters that generate a series of subband signals from the audio signal, respectively, in a row of subbands. A method for estimating the first discrete signal value of the first subband signal in the first subband of an audio signal includes determining a model parameter for a signal model; determining a prediction coefficient to be applied to the previous discrete value of the decoded signals of the first subband obtained from the first subband signal based on the signal model based on the model parameter and based on the set of analyzing filters. The time interval of the previous discrete value precedes the time interval of the first discrete value; and determining the estimation of the first discrete value by applying the prediction coefficient to the previous discrete value.EFFECT: providing a low data rate with a low level of spurious frequencies.33 cl, 9 dwg

Acoustic structure // 2636086
FIELD: physics.SUBSTANCE: acoustic substrate includes essentially open inner and outer lining layers. The inner layer consists of a plurality of open cells that extend between the facing layers. The cells can have multiple configurations, including cells. The facing layers in some embodiments may be non-woven or woven glass canvases. A multi-layered acoustic structure is proposed, which in one non-limiting embodiment consists of two inner layers with outer lining layers and an intermediate layer between the inner layers.EFFECT: invention provides for the creation of improved acoustic substrates that are lightweight and have a high noise reduction factor.25 cl, 8 dwg

ethod and signal processor for converting plurality of input channels from configuration of input channels to output channels from configuration of output channels // 2635903
FIELD: radio engineering, communication.SUBSTANCE: method comprises providing a set of rules associated with each input channel from a plurality of input channels, the rules specifying different conversions between the associated input channel and a set of output channels. For each input channel from the plurality of input channels, the rule associated with the input channel is accessed, a determination is made as to, whether there is a set of output channels specified in the access rule in the configuration of the output channels and the rule is selected, which is accessed if the set of the output channels specified in the access rule is present in the configuration of the output channels. Input channels are converted to output channels according to the selected rule.EFFECT: improving the sound quality.23 cl, 9 dwg, 6 tbl
 
2551021.
Up!