Method and device for sound signal optimisation

FIELD: physics.

SUBSTANCE: method is used in a terminal comprising at least two sound detecting units and the method includes: determining positions of sound sources around the terminal using at least two sound detecting units, selecting a designated sound source among the corresponding sound sources detected by position determination; determining the sound signal emitted from the designated sound source among the sound signals collected by the terminal in accordance with the spatial position of the designated sound source detected by position determination; and optimizing the volume of the sound signal emitted from the designated sound source. According to the present invention, when collecting sound signals due to selection of the surrounding sound sources and optimisation of the sound signal emitted from the selected sound source, the result of the sound signal detection by the terminal is improved.

EFFECT: improved result of the sound detection by the terminal.

11 cl, 7 dwg

 



 

Same patents:

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to bandwidth expansion devices. An excitation signal based on an acoustic signal is generated; with that, the acoustic signal includes a variety of frequency components. A feature vector is distinguished out of the acoustic signal; with that, the feature vector includes at least one feature of a component in a frequency domain and at least one feature of a component in a time domain. At least one parameter of the spectrum shape is determined based on the feature vector; with that, at least one parameter of the spectrum shape corresponds to a sub-range signal containing frequency components that belong to an additional variety of frequency components. A signal of the sub-range is generated by the filtration of an excitation signal by means of a filter bank and weighing of a filtered excitation signal using at least one parameter of the spectrum shape.

EFFECT: technical result consists in the improvement of perception of an expanded acoustic signal.

21 cl, 10 dwg

FIELD: physics, acoustics.

SUBSTANCE: invention relates to systems for encoding audio signal sources. Provided is subband block-based harmonic transposition, where the time block of complex discrete values of subbands is processed by common phase modification. Superposition of multiple modified discrete values yields the resultant effect of limiting undesirable cross products, making it possible to use coarser frequency resolution and/or lesser degree of oversampling. In one embodiment, the invention further includes a window function suitable for use with cross product-enhanced, subband block-based HFR. A hardware embodiment may include an analysing filter unit (101), a control data-configurable subband processing module (102) and a synthesising filter unit (103).

EFFECT: efficient implementation of high-frequency reconstruction (HFR) through enhancement with cross products, where a new component with frequency QΩ+rΩ0 is generated based on existing components with frequencies Ω and Ω+Ω0.

63 cl, 9 dwg

FIELD: physics, acoustics.

SUBSTANCE: invention relates to encoding acoustic signals and can be used for transportation in the frequency domain. The high frequency audio signal generator consists of an analyser for analysing an input signal to determine current transient information, a spectral converter for converting the input signal into an input spectral representation, a spectral processor for processing the input spectral representation to obtain a modified spectral representation comprising frequency values higher than the input spectral representation, a time converter for converting the modified spectral representation to a time domain representation, wherein the spectral converter or the time converter is capable of performing frequency domain oversampling for the first component of the input signal having transient information and not performing the frequency domain oversampling for the second component of the input signal without transient features.

EFFECT: efficient generation of a quality high frequency audio signal through separate processing of transient and fixed components of the audio signal.

15 cl, 7 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to radio engineering and is intended for controlling an audio signal, including a transient event. The device comprises a unit for replacing a transient signal, configured to replace the transient part of a signal, which includes a transient event of an audio signal, with part of a replacement signal adapted to energy characteristics of the signal of one or more transient parts of the audio signal, or to the energy characteristic of the signal of the transient part of the signal to obtain an audio signal with a shorter transient process. The device also includes a signal processor configured to process an audio signal with a shorter transient process to obtain a processed version of the audio signal with a shorter transient process. The device also includes a transient signal inserting unit configured to merge the processed version of the audio signal with a shorter transient process with the transient signal, representing in the original or processed form the transient content of the transient part of the signal.

EFFECT: high accuracy of reproducing the signal.

14 cl, 20 dwg

FIELD: physics, acoustics.

SUBSTANCE: group of inventions relates to means of analysing time variations of audio signals. Disclosed is an apparatus for obtaining a parameter describing variation of a signal characteristic of a signal based on actual transform-domain parameters describing an audio signal in transform-domain which includes a parameter determiner. The parameter determiner is configured to determine one or more model parameters of a transform-domain variation model describing evolution of the transform-domain parameters depending on one or more model parameters representing a signal characteristic, such that a model error, representing deviation between a modelled temporal evolution of the transform-domain parameters and evolution of the actual transform-domain parameters, is brought below a predetermined threshold value or minimised.

EFFECT: designing highly reliable means for obtaining a parameter describing time variation of a signal characteristic.

27 cl, 9 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering. A method of maintaining speech audibility in a multi-channel audio signal, comprising comparing a first characteristic and a second characteristic of the multi-channel audio signal to generate an attenuation factor, wherein the first characteristic corresponds to a first channel of the multi-channel audio signal that contains speech audio and non-speech audio, wherein the second characteristic corresponds to a second channel of the multi-channel audio signal that contains predominantly non-speech audio; adjusting a gain applied to a second power spectrum until the predicted speech intelligibility meets a criterion; and using the adjusted gain as the attenuation factor once the predicted speech intelligibility meets the criterion; adjusting the attenuation factor according to a speech likelihood value to generate an adjusted attenuation factor; and attenuating the second channel using the adjusted attenuation factor.

EFFECT: improved speech audibility in a multi-channel audio signal.

14 cl, 5 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of picking up speech signal in presence of interference, which comprises converting an input mixture of an acoustic signal and interference into an electrical signal, filtering with a band-pass filter to obtain a mixture of a speech signal and interference with a given bandwidth, which is amplified in a low frequency amplifier; an analogue-to-digital converter (ADC) generates readings of the mixture of the signal and interference in digital form and transmits said readings to a computing device, which forms pairs of sums of amplitudes of the readings in a certain manner and calculates signal amplitudes for each moment in time using the obtained summation results by solving corresponding systems of linear equations.

EFFECT: high efficiency of picking up a speech signal in the presence of interference.

2 dwg, 1 tbl

FIELD: physics, acoustics.

SUBSTANCE: invention relates to HFR (High Frequency Reconstruction/Regeneration) of audio signals and is intended for performing HFR of audio signals having large variations in energy level across the low frequency range which is used to reconstruct the high frequencies of the audio signal. The system configured to generate a plurality of high frequency subband signals covering a high frequency interval from a plurality of low frequency subband signals. The system comprises means of receiving a plurality of low frequency subband signals; means of receiving a set of target energies, each target energy covering a different target interval within the high frequency interval and being indicative of the required energy of one or more high frequency subband signals lying within the target interval; means of generating a plurality of high frequency subband signals from the plurality of low frequency subband signals and from a plurality of spectral gain coefficients associated with the plurality of low frequency subband signals, respectively; and means of adjusting the energy of the plurality of high frequency subband signals using the set of target energies.

EFFECT: preventing undesirable noise caused by discontinuities of the spectral envelope of the high frequency audio signal.

20 cl, 14 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to means of generating a broadband signal using a low-bandwidth input signal. A processor performs controlled bandwidth expansion using a low-bandwidth input signal and a first set of parameters for generating first frequency content, which continues up to the a first frequency, and performs blind bandwidth expansion using the first frequency content and a second set of parameters for generating second frequency content, which continues up to a second frequency which is higher than the first frequency. The first set of parameters and the input low-bandwidth signal are extracted from the bit stream. The processor comprises a parameter generator for generating the second set of parameters from the first frequency content, wherein the parameter generator is configured to obtain spectral envelope parameters for the second set of parameters for the second frequency content via extrapolation from lower to higher frequencies of information about the energy of the formed spectral envelope of the first frequency content.

EFFECT: wider bandwidth with low bit rate and maintaining high signal quality.

13 cl, 7 dwg

FIELD: physics, acoustics.

SUBSTANCE: invention relates to means of decoding and/or transcoding audio. A first and a second source set of spectral band replication (SBR) parameters are merged into a target set of SBR parameters. The first and second source set comprise a first and second frequency band partitioning, respectively, which are different from one another. The first source set comprises a first set of energy related values associated with frequency bands of the first frequency band partitioning. The second source set comprises a second set of energy related values associated with frequency bands of the second frequency band partitioning. The target set comprises a target set of energy related values associated with an elementary frequency band. The method comprises steps of breaking up the first and the second frequency band partitioning into a joint grid comprising the elementary frequency band; assigning a first value of the first set of energy related values to the elementary frequency band; assigning a second value of the second set of energy related values to the elementary frequency band; and combining the first and second value to yield the target energy related value for the elementary frequency band.

EFFECT: simplifying the process of reducing the number of channels while preserving the relevant high-frequency channel information.

32 cl, 9 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and specifically to intelligent automated assistant systems. Disclosed is method of operating an intelligent automated assistant. The method is carried out in an electronic device having a processor and memory which stores instructions for execution by the processor. The processor executes instructions on which a user request is received, wherein the user request includes a speech input received from the user. Based on the representation of user intent, a plurality of relevant task parameters are identified for the task flow, wherein the plurality of relevant task parameters includes at least one task parameter explicitly expressed in speech input and at least one task parameter logically derived from context information associated with the speech input.

EFFECT: high accuracy of presenting a user with relevant information by taking into account task parameters logically derived from context information.

11 cl, 50 dwg, 5 tbl

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and specifically to intelligent automated assistant systems. Disclosed is method of operating an intelligent automated assistant. The method is carried out in an electronic device having a processor and memory which stores instructions for execution by the processor. The processor executes instructions on which a user request is received, wherein the user request includes a speech input received from the user. A prompt is provided to the user, the prompt presenting two or more properties relevant to items of an object selection domain. The user is requested to specify relative importance between the two or more properties.

EFFECT: high accuracy of providing a user with relevant information owing to consideration of relative importance between properties which correspond to items of an object domain.

12 cl, 50 dwg, 5 tbl

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and specifically to intelligent automated assistant systems. Disclosed is method of operating an intelligent automated assistant. The method is carried out in an electronic device having a processor and memory which stores instructions for execution by the processor. The processor executes instructions on which a user request is received, wherein the user request includes a speech input received from the user. Two or more alternative interpretations of user intent are obtained based on the received user request and one or more similarities and one or more differences between said alternatives are identified. Further, the user is presented with a response, said response being at least one of the identified differences.

EFFECT: high accuracy of presenting relevant interpretations of user intent in the correct context.

13 cl, 50 dwg, 5 tbl

FIELD: physics.

SUBSTANCE: method of functioning of a smart automated assistant is offered. The method is performed in the electronic device containing the processor and memory where the instructions executed by the processor are saved. The processor executes instructions by which the user request is accepted, which includes the speech input accepted from the user. The information on the sender name is taken from the transfer accepted in the electronic device before reception of speech input. Meanwhile this transfer is accepted from the sender that is isolated from the mentioned user. The intention of the user is revealed on the basis of the mentioned text line and a sender name.

EFFECT: improvement of accuracy of representation of relevant information to the user due to identification of intention of the user on the basis of the text line and a sender isolated from a user.

15 cl, 50 dwg, 5 tbl

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and specifically to virtual assistant systems. Disclosed is a computer-readable data medium for interpreting user input to perform a task in a computing device having at least one processor. The computer-readable medium comprises a computer code instructing the processor to prompt an output device to prompt a user for input. The processor also receives user speech input via an input device and receives context information from a context source, wherein the context information includes data describing the acoustic environment in which the speech input is received. Further, the processor performs interpretation of the received user speech input to determine user intent.

EFFECT: automation of user interaction with an electronic device through speech input which interprets user intent.

20 cl, 40 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and specifically to automated intelligent assistant systems. Disclosed is method of operating an automated intelligent assistant. The method is carried out in an electronic device having a processor and memory which stores instructions for execution by the processor. The processor executes instructions on which a plurality of predefined domains is stored, each representing a respective area of service offered by the automated intelligent assistant. Each predefined domain is associated with at least one task flow specifying steps for performing a respective task in the predefined domain. Further, the method includes obtaining a text string derived from a user request, the text string including at least one or more words derived from a speech input received from a user. The method also includes identifying a relevant domain for the user request from said plurality of predefined domains.

EFFECT: automating interaction of a user with an electronic device through an automated intelligent assistant.

12 cl, 50 dwg, 5 tbl

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and specifically to automated intelligent assistant systems. A method of operating an automated assistant is disclosed. The method is carried out in an electronic device having a processor and memory which stores instructions for execution by the processor. The processor executes instructions on which a text line is obtained from voice input received from a user. Further, the method includes interpretation of the received text line to extract a representation of user intention, wherein the interpretation is based on a permanent long-term personal storage device and a short-term personal storage device. The permanent long-term personal storage device contains a plurality of words associated with the user, and the short-term personal storage device contains data relating to the current session of the user with the automated assistant.

EFFECT: automating interaction of a user with an electronic device through an automated assistant.

13 cl, 50 dwg, 5 tbl

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and specifically to automated intelligent assistant systems. Disclosed is method of operating an automated intelligent assistant. The method is carried out in an electronic device having a processor and memory which stores instructions for execution by the processor. The processor executes instructions on which a user request is received, wherein the user request includes a speech input received from the user. Further, the method comprises identifying a respective candidate domain relevant to the user request from a plurality of predefined domains, wherein each predefined domain presents a respective area of service offered by the automated intelligent assistant, and wherein the respective candidate domain provides a reservation service to the user.

EFFECT: automating interaction of a user with an electronic device through an automated intelligent assistant.

15 cl, 50 dwg, 5 tbl

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and specifically to automated intelligent assistant systems. The method is carried out in an electronic device having a processor and memory which stores instructions for execution by the processor. The processor executes instructions on which a user request is received, wherein the user request includes a speech input received from the user. Further, the user is presented with an echo of the speech input based on a textual interpretation of the speech input. A task to be executed by an electronic device is also determined from a plurality of tasks which can be executed by the mobile device. The task is determined by processing natural language with respect to the speech input.

EFFECT: automating interaction of a user with an electronic device through an automated intelligent assistant; disclosed is a method of operating an automated intelligent assistant.

12 cl, 50 dwg, 5 tbl

FIELD: physics, communication.

SUBSTANCE: invention relates to portable computing devices. Such result is achieved by the fact that an interactive session of voice communication includes detection of an input signal that annunciates interruption of the signal, when such interruption is detected, the instructing and/or informing output signal is interrupted, and detection of the voice input signal is started, at the same time the voice input signal is not detected until the output signal has been interrupted. In case of detection of a voice input signal, it may be determined whether this input signal was permissible. If the input signal was permissible, then the input signal is processed, and if not, then the instructing and/or informing output signal may be repeated, and/or the voice input signal may be repeatedly detected.

EFFECT: technical result consists in increased speed of information input.

15 cl, 3 dwg

FIELD: computer science.

SUBSTANCE: device has first device for inputting speech signals, second device for identification of inputted voice signals, recording environment, control block with control program, which is made with possible connection to optical indication device and/or acoustic reproduction device.

EFFECT: broader functional capabilities.

2 cl, 1 dwg

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