Apparatus for generating multichannel audio signal. RU patent 2498526.

FIELD: physics.

SUBSTANCE: apparatus (100) for generating a multichannel audio signal (142) based on an input audio signal (102) comprises a main signal upmixing means (110), a section (segment) selector (120), a section signal upmixing means (110) and a combiner (140). The section signal upmixing means (110) is configured to provide a main multichannel audio signal (112) based on the input audio signal (102). The section selector (120) is configured to select or not select a section of the input audio signal (102) based on analysis of the input audio signal (102). The selected section of the input audio signal (102), a processed selected section of the input audio signal (102) or a reference signal associated with the selected section of the input audio signal (102) is provided as section signal (122). The section signal upmixing means (130) is configured to provide a section upmix signal (132) based on the section signal (122), and the combiner (140) is configured to overlay the main multichannel audio signal (112) and the section upmix signal (132) to obtain the multichannel audio signal (142).

EFFECT: improved flexibility and sound quality.

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Implementation according to the invention associated with the device and a way to generate multi-channel audio, based on the input audio signal.

Some implementation according to the invention associated with the processing of a sound signal, in particular, connected with the concepts of generation of multichannel signals, where for each speaker is passed own signal.

When the signal from the N audio channels audio system, such as M TV playback (M>N)have the following possibilities:

1) is only part of the available speakers

2) Generates a signal, which uses the full accessible system for playback.

The second possibility is the preferred solution, hereinafter also referred to as increasing the mix.

In the context of raising the mix there are two different kinds of ways to generate multichannel signal. For example, the existing multi-channel signal is formed to a smaller number of channels to recover the original signal in the receiver (receiver), based on additional data. This method is also called managed increasing mixing.

Another possibility is the so-called method of the blind multiplying mixing. It concerns the multichannel extensions without knowing the details. There are no additional data, which govern the process. Nor is there any original audio experience or reference sound experience that should be emulated or achieved through blind multiplying mixing.

Therefore, there are different approaches to the implementation of the blind, raising mixing.

One possible approach is known as the concept of direct environment. In this case, sources of direct sound preferably played through the three front channels (for example, for the so-called 5.1 home cinema system) so that the sources of the direct sound is audible for the listener in the same provisions as in the original version with two channels (for example, when the input signal is - stereo signal).

Figure 2 shows a schematic illustration of the sound signal 200 for a system with two channels. The original two-channel version is shown, for example, with three sources of direct sound S1, S2, S3, 240. Audio signals are reproduced for the listener 210 left speaker 220 and right speaker 230 and includes parts of three signal sources of direct sound and part of the surroundings 250 designated box circle area. This is for example the standard two-channel stereo playback (3 source and environment).

Figure 3 shows a schematic illustration of the sound signal 300 blind multiplying mixing according to the concept of direct environment. Five speakers (Central 310, front left 320, front right 330, rear left 340, and rear right 350) are intended to reproduce multi-channel audio.

Sources of direct sound 240 played three speakers 310, 320, 330 ahead. Of the environment 250 contained in a sound track are played in front channels and other channels, to envelop the listener 210.

Of the environment is part of the signal, which may not be intended for a single power, but intended combination of all audio components that create the impression audible environment. Of the environment may include, for example, reflection signals indoors and reverberation of the air, and the sounds of the public, for instance, applause, natural sounds, for example, noise of rain or artificial sound effects, for example, the crackle of vinyl records.

The next possible concept is often referred to as a concept in the range. Figure 4 shows a schematic illustration of the sound signal 400 according to the concept in the range. Placement of speakers corresponds to the location of the speakers in figure 3. However, each type of sound, such as direct sources of sounds and sounds like environment, are located around the listener.

Because all output signals are generated from the same input, output signals must be further . This can be used by many well-known methods, for example, the time delay or use of filter. Referred simple ways often act in addition to the effect of decorrelation of disturbing weaknesses.

For example, one drawback is that almost all the ways decorrelation distort the temporal structure of input signals, so that the transition structures lose their transitional nature. This results, for example, to such effect that such applause signal environment can only attain the effect of diffraction, but no immersion.

Special signal types, such as applause, or the sound of rain, occupy a special position among the signals of the environment. This signals the environment, which do not necessarily create the impression in the room. Rather, they create a sense of diffraction using a great number of temporal and spatial alignments (overlays) single parts, which include in their own interests features of the direct sound, for example, single clapping or the sound of a single drop of rain. Through combining the resulting full signal gets, mainly, the same statistical properties known of room reverberation.

In particular, these types of signal difficult to control the way of boosting mixing (managed by multiplying mixing and blind multiplying the mix). In addition, they often lead to defective increases the mixing, for example, you can often hear the effect similar to filter.

Known methods of a blind multiplying mixing, which create part of the signal for the rear channels, in order not to appear these artifacts, generate sound the impression, which is limited to the impression, for example, where clapping audience in front of the listener, and the surrounding channels only produce the impression of the premises in which applause ( environment). But especially desirable in this setting, be part of audience or be in the rain (the environment with the immersion). To do this, all the parts (like the concept in the range) should be distributed around the listener, but without specific dimensions again, this will sound impression with artifacts.

In the work of A. Wagner, A. Walter F. Melchior, M Strauss «Generation atmospheres with a high degree of immersion to play a synthesis of the wave field», presented at the 116-th Congress of the AES, Berlin, 2004, describes the way, how immersive environment (submersible) can be generated for the synthesis of the wave field. For this listener is surrounded 360° around sound field, which gives the impression presented acoustic environment.

To achieve immersion effect (effect of immersion), are added so called focusing sources. Focusing source - point source of the sound, which is perceived as a single source and represents a typical single sounds enveloping sound field.

According to the publication, single-source (sound particles (material points)should be available for each environment in large quantities and can be either separately recorded sounds, or artificial sounds generated synthesizer.

This object-oriented approach has the disadvantage that the various tones for each type of environment must already be available. On the one hand, signals enveloping the environment, as uncorrelated single track, on the other hand, single sound sources as a separate sound files. Referred to the alternative is to artificially generate (for example, through software synthesizer) for each type of environment (if known), that includes the risk that they are not suitable for reproduction of the environment. Additionally, for this generation, for example, requires a mathematical model sounds particles of a material point) and long computational time. In General, the efforts aimed at the synthesis of the wave field is very high.

In a scientific paper by Gerard Khoto, Steven van de Vapor, Jeroen Б «Multichannel encoding signals of applause» describes how to multi-channel encoded signals of applause, which, in particular, includes a way of decorrelation of random environments (for example: applause, rain, crackle).

It is mentioned that the frequency-selective encoder affects the quality of the signals, and, therefore, is only encoder, based on the time interval.

In this regard, should be performed only that means, essentially, that all signals sound the same (or as input). Enter way decorrelation, which play the reference sound should be successful.

In an earlier previously unpublished European patent application with application number EP 08018793 introduces a way that decomposes a similar applause signal to the sound of foreground and background sound. Reference is made to the work of A. Wagner, A. Walter F. Melchior, M Strauss «Generation atmospheres with a high degree of immersion to play a synthesis of the wave field», presented at 116 Congress AES, Berlin, 2004, environment is separated from the perceived single sounds, of which consists environment, and then the two parts can be adjusted separately from each other.

The following well-known ways of boosting mixing describes, for example, in the work of Roy and Multichannel sound Converter», international publication Number: WO 02/052896 A2, in the work of Carlos and Jean-Marc «Division (segregation) flow for stereo signals, Publication №US 2007/0041592 A1, in the work of David «Multi-channel encoder with an active matrix, the decoder with the maximum lateral division (separation)», number of patent US 005870480 A, and in the work of Jan Petersen «Multi-channel system play a sound to stereo», international publication Number: WO 01/62045 A1, which do not distinguish between the various input signals.

The objective of this invention is to provide a device for generating multi-channel audio, which provides enhanced flexibility and sound quality.

This is achieved using the device according to claim 1, and the fashion section 12.

Realization of the invention provides a device for generating multi-channel audio, based on the input audio signal. The device includes a tool for boosting the main mix signal, sectional (segment) selector tool enhances the mixing section (segment) of the signal and unifier.

A means of boosting the main mix signal is formed to provide the main multi-channel audio signal based on the input audio signal.

Part (segment) selector formed to choose or not to choose the section (segment) of the input sound signal based on the analysis of the input sound signal. The selected section of the input sound signal, processed, selected section of the input sound signal or reference signal is associated with the selected section of the input sound signal is available as a cell signal.

A means of raising the mixing section signal is formed to ensure the cell signal multiplying mixing based on the breakout signals, and unifier formed to combine the main multi-channel audio signal and a sectional channel multiplying mixing to obtain multi-channel audio.

Implementation in accordance with this the invention is based on the Central idea that the chief multichannel audio sound generated signal means of boosting the main mix signal is being modernized () optional audio signal based on sectional signal multiplying mixing. This additional beep is based on the selection section of the input sound signal.

The multi-channel audio signal can be influenced in a very flexible way through an autopsy selector and means of enhancing the mixing section of the signal.

Thanks to high flexibility and when using the smart choice sectional signal and the right of the principle of multiplying the mixing section of the signal can be improved sound quality.

As multi-channel audio signal is somehow artificial signal, because he generated on the basis of the input sound signal with fewer channels than multi-channel audio signal, and does not provide the original sound impression, sound quality multi-channel audio can be improved, to get a signal that can generate sound impression, as far as possible identical to the original sound impression, through the flexible use of sectional selector and means of enhancing the mixing section of the signal.

A means of boosting the main mix signal can generate a nice sounding of the main multi-channel audio, which is enhanced by combining the cell signal multiplying mixing.

The emergence of the generated artifacts, for example, by separating the input sound signal foreground and background signal, can be prevented.

In some realizations according to the invention the selected cell signal is saved and used more than once for boosting mixing and matching to get superior multi-channel audio signal. Thus, the number of breakout signals in multichannel sound signal can be different. For example, cell signal corresponds to a single drop of rain falling on the ground. Thus, the density of single oral drops of rain in the shower may vary.

In some further realizations according to the invention audio input signal is analyzed to identify the section of the input sound signal. For example, a signal of the environment, such as applause or rain can be identified, and within these signals single cotton or a drop of rain can be selected.

Implementation according to the invention will be determined later with reference to the attached drawings in which:

Figure 1 - block diagram of a device for generation of multichannel sound signal;

Figure 2 - schematic illustration of the sound signal system with two channels;

5 is a schematic illustration of the sound signal of the kind of applause, which includes a lot of single sources;

6 - schematic illustration of the impact parameter of the provisions of reproduction of sound signal;

Fig.7 - schematic illustration of the influence of the parameter of the distribution of reproduction of sound signal;

Fig.8 - block diagram of a device for generation of multichannel sound signal;

Fig.9 - block diagram of a device for generating multi-channel audio; and

Figure 10 is a block diagram of the method of generation of multichannel sound signal.

For simplicity, most of the listed below executing mentions or shows the input audio signal with two channels (N=2) and generated multi-channel audio signal with five channels (M=5). This corresponds to the General case, when the environment with two channels (e.g. for CD discs) must be reproduced system with five channels (often called 5.1 home cinema system, where .1 refers to the target channel with reduced bandwidth). However, described the concept can be easily moved to any number of channels or object-oriented playback person skilled in the art.

Figure 1 shows a block diagram of the device 100 to generate multi-channel audio 142 based on the input audio signal 102, according to realization of the invention. The device is 100 includes a tool for boosting the main mix signal 110, sectional selector 120, a means of raising the mixing section signal 130 and the unifier of 140. A means of boosting the main mix signal 110 connects with consolidator 140, sectional selector 120 is connected with the means of raising the mixing section signal 130, and a means of raising the mixing section signal 130 is also connected with the consolidator of 140.

A means of boosting the main mix signal 110 formed to provide the main multi-channel audio signal 112, based on the input audio signal 102.

Sectional selector 120 formed to choose or not choose a section of the input sound signal 102, based on the analysis of the input sound signal 102. The selected section of the sound input is 102, which are processed by the selected section of the input sound signal 102 or reference signal is associated with the selected section of the input sound signal 102 provided as a cell signal 122.

A means of raising the mixing section signal 130 formed to provide a cell signal multiplying mixing 132, based on sectional signal 122.

Unifier 140 formed to combine the main multi-channel audio signal 112 and cell signal multiplying mixing 132 to get multichannel sound signal 142.

For example, a representative section (segment) of the input sound signal for a special environment, such as applause, or the rain, is chosen based on the analysis of the input sound signal. The selected section 122 may be processed or replaced by a reference signal. The selected section 122, processed, selected section or the reference signal is then mixed with the increase and is combined with the main multi-channel audio signal 112 to get superior multi-channel audio signal 142.

So you can add, say, a transition signal on the basis of sectional signal multiplying mixing 132 to the main multi-channel audio signal 112.

Increases the mixing section of the signal and the combination can be fulfilled so that the multi-channel audio signal 142 could generate an immersive (submersible) environment for the listener, and, therefore, superior multi-channel audio signal.

A means of boosting the main mix signal 110 can, in principle, work in accordance with any method of raising mixing. To obtain an homogenous similar environment sound impression to limit the distance hearing the sound between the front speakers and the surrounding speakers, all signals of speakers and, especially, the sound toward the front surround must . During blind multiplying mixing, for example, is only available N input signals, from which new output signals with other properties to be generated by weighting the individual parts of the signals. Thus, for example, sources of direct sound may be accentuated by the weakening of the environment or Vice versa.

You can usually assume that the overall effect of multiplying mixing generates sound impression for such applause signals.

Part (segment) selector 120 can also be called a particle separator (material points), and selecting partition (segment) of the input signal can also be described by division (separation) of a particle (a material point).

Part (segment) selector 120 selects, for example, through the exceptions section (segment) of an input signal (also called a fragment of particles a material point) or sound), which is typical or characteristic of the input signal. This can be done in different ways.

For example, a short section of the waveform (presentation of the temporary area) input signal may be excluded.

An alternative may be the choice, advanced processing and re-conversion of single units or group of units of time-frequency region to the staging area.

The following alternative marking blocks in the time domain and/or the frequency domain, which are specifically regulated in post-processing and again added to the full signal directly before re-conversion. For example, temporary partition of the input sound signal can be selected and divided into a number of frequency bands, for example, a comb filters. One or several different frequency bands can be processed, and then, if necessary, re-converted and, for example, combined with untreated selected section (segment) of the input sound signal.

Processing the selected partition of the input sound signal, the quality of sound particles of a material point) (selected section) can be improved. For example, cotton listener from the public can be dedicated (isolated) by processing the selected partition. Dedicated cotton can be modified to generate, for example, better-sounding cotton or various little different sounding clapping.

Further alternative can replace the selected section of the reference signal. For example, the selected section contains cotton listener from the public and replaced with a reference signal, containing the perfect cotton.

Unifier 140, for example, adds one or more of separated particles (material points), contained in one or more breakout signals multiplying mixing, the multi-channel audio signal (also known as standard enhance mixing). The main multi-channel audio signal and cell signal multiplying mixing can, for example, added to, directly or added with adapted amplitudes and/or phases.

Figure 5 shows a schematic illustration of the sound signal 500, such applause, which includes a lot of single sources. This exercise shows two channel system left speaker 220 and right speaker 230 and lots of single sources 510 that correspond to the subject separation of particles of the material points), distributed between the two loudspeakers, where a position between these two speakers depends on the part of the signal, reproduced left speaker right speaker.

A means of raising the mixing section signal 130 can generate cell signal multiplying mixing 132, which contains, for example, one or more audio particles (mass points). This process enhances the mixing can be based on the provisions, where the provisions of, for example, specifies what position, the listener will hear a specific particle (particle). Parameter position can be determined using the information about the position, contained in the input sound signal, or can be generated randomly, for example, by means of a generator of random provisions.

Part of the signal particles of a material point) in different channels of multichannel sound signal can be determined by way of a peak pan, for example, based on the position of the particle (a material point).

Figure 6 shows a schematic illustration 600 impact parameter position to play a sound. Figure shows the five speakers, relevant sound signal. In this example, the speakers are located on a circle 610 circle.

When the sound of the particle material point) is sent to the speaker, the virtual location in which the listener will hear this special sound particle (particle), depends on the part of the signal, sent to each speaker. For example, when a signal is sent to only one speaker, the listener will think that the sound source is located in this particular speaker. This case is indicated for the particles of a material point) 630, located on the front left loudspeaker 320. If the signal is divided between the two speakers, the virtual location for sound particles of a material point) is located between the two speakers. It is shown particles (material points) 640 650. Signal, approximately equally distributed between the five speakers, will appear approximately in the middle of the array loudspeakers indicated digit 660. Thus, the virtual location for sound particles of a material point) can be located anywhere (for example, indicated by numerals 670 and 680) within the area bounded by a line 620 between each two adjacent speakers.

Cell signal or particle (particle) can be added to a random position and/or random times. A means of raising the mixing section signal 130 can also be referred to as a means of raising the mixing particles (mass point).

This addition may depend on the type of environment (applause, rain or other) in static positions, data paths, or in a completely random positions each, if possible, with randomly set amount of time.

Some implementation according to the invention, includes the memory section of the signal (or intermediate memory or buffer memory). This memory can store single separated particles (material points) or section signals processed sectional signals or reference signals that can be used several times. To change or edit the sound extracted audio particles (material points), can be used filtering or high-quality processing steps, such as the way of formation of the transitional described in M. Goodwin, K. Algorithms in the frequency domain to expand the audio signal based on the transitional modification», Journal of the Society of sound engineering 54 (2006) №9, 827-840".

In some realizations according to the invention adding sectional signal multiplying mixing to the main multi-channel a sound signal, also called the addition of particles (mass points) to the standard increases the mixing can be controlled by parameters such as density setting and/or the distribution.

Density setting, for example, shows how much of single sounds or particles (mass points) (part time) is added to the main multi-channel audio signal (standard increases the mixer). These particles (material points) can meet various selected section of the input sound signal or one specific separated particle (material point)stored in the memory and used several times.

Parameter distribution, for example, determines which area of sound caused by multi-channel sound (the sound of a multiplying the mix), particles (material points) should be added to the main multi-channel audio signal (standard increases the mixer).

Fig.7 shows the schematic illustration 700 impact parameter distribution of reproduction of sound signal. Figure 7 impact parameter distribution indicated by the dashed line 710. For example, for some sound impressions, it may be desirable to particles (material points) were added only to the listener 210, and for other audio impressions may be better to distribute particles (material points) throughout the area or in the back part.

Parameter distribution, for example, can affect the random generation of a parameter position for each set of particles (mass points). In the example shown in Fig.7, the probability of the particle position (material point) to the listener higher than behind the listener.

Density and/or spreading of the environment can be changed with parameters, for example, also independent of the density and distribution of the input sound signal.

Fig.7 shows an example of a multiplying mixing of the signals shown in figure 5, by the application of the described concept.

In some realizations according to the invention the separated particles (material points) are played only one single speaker, to avoid echo, for example, if you use a delay between the various speakers.

Some implementation according to the invention, includes the analyzer, also designated as the unit of classification formed to perform the analysis of the input sound signal to identify a section of the input sound signal, which will be chosen. The analyzer can be part of a breakout in the selector, or independent separate block.

Fig.8 shows a block diagram of the device 800 to generate multi-channel audio 142 based on the input audio signal 102 according to realization of the invention. In this case, the analyzer 810 is shown as a separate unit.

Analyzer 810 can be formed to identify the partition that will be selected on the basis of parameter identification contained in the input sound signal, on the comparison of the input sound signal with a reference signal, frequency analysis of the sound input or a similar method. For example, can thus be identified similar environment signal in the input audio signal. An example might be a sensor applause or rain sensor.

Analyzer 810 or block classification can decide whether the input sound signal or a section of the sound input is processed as described. Depending on results of analysis or classification may be modified parameter values following blocks, for example, funds raising the main mix signal, sectional selector, a means of raising the mixing section of the signal or unifier.

For example, the analyzer informs by setting the selector (analysis), which section of the sound input should be selected, or makes a means of boosting the main mix signal to weaken the partition that will be selected in the main multi-channel sound signal.

Unifier 140 shows in this case, a direct link between the output of the means of raising the main mix signal 110, and the release of funds raising mixing sectional signal 130, which can be one of the possibilities to combine the main multi-channel sound signal and cell signal multiplying mixing. An alternative may be to adjust the amplitude and/or phase of the main multi-channel audio and/or breakout signal multiplying mixing.

Some implementation according to the invention, includes controller formed to deactivate sectional selector tool enhances the mixing section of the signal or unifier. By switching to one of these three blocks from the activated in deactivated mode can be blocked by combining the main multi-channel audio and sectional signal multiplying mixing. Therefore, the multi-channel audio signal mainly (for example, in addition to the difference of the amplitudes and phases) is the main multi-channel audio signal.

The alternative could be that the controller is formed to continuously switch between fully activated and held disabled mode sectional selector, a means of raising the mixing section of the signal or unifier. This can provide an opportunity for continuous fading between two different atmospheres to get more or immersive (submersible) sound impression.

The controller can be controlled by a parameter of management contained in the input sound signal, or controlled user interface. This can give the manufacturer (using the control contained in the input sound signal) or listener (through the user interface) the ability to adjust the sound impression to your liking, or according to the instructions.

The controller can provide the opportunity for continuous fading from enveloping (can be either a standard or alternative) to immersive (submersible) sound experience or from immersive (dipping) before enveloping audio experience.

In some realizations according to the invention the selected section or particles of the material points)that appear in the surrounding signal can be attenuated in front signal. It can generate very discrete tangible (submersible) effect. Then it may become impossible temporal shift of particles (mass points) compared with the input signal and the reuse of particles a material point). Can only be changed position.

In some further realizations according to the invention essentially good sounding audio the impression is generated by means of multiplying main mix signal (standard uplifting mix), which is only one feature and modernized, the separated particles (material points). Therefore, it is possible that the same input sounds appear in envelope part and in the immersive (submersible) direct part. This is possible because, for example, no signal will be played as a new signal, in any case, is generated by multiplying mixing.

In some realizations of the invention can be changed in time sequence of single elements of the sound of foreground, and the transition from enveloping the (submersible) environment becomes possible. Additionally you may use automatic signal classification.

Temporary density environment, desired voice and spatial distribution (in a controlled way) can be installed independently from the original signal.

Some of implementing the invention relates to the means of raising the mixing section of the signal using a rule-enhancing mixing different from the rules for multiplying mixing tools enhances the main mix signal.

Fig.9 shows a block diagram of the device 900 to generate multi-channel audio 142 based on the input audio signal 102 according to realization of the invention.

Device 900 corresponds to the device shown in Fig.8. But the analyzer 810 (block classification) in this example is part of the section selector 120, and option analysis 902 provides a means of boosting the main mix signal 110, and/or to the means of raising the mixing section signal 130.

Additionally shows how alternatively mentioned above, the controller 910, memory sectional signal 920 and generator of random provisions of 930.

Memory sectional signal 920 in this example, is associated with cell selector 120 and formed to keep the cell signal 122, provided cell selector 120, and formed to provide saved cell signal selector 120. Alternatively, memory sectional signal 920 may provide saved cell signal directly to the means of raising the mixing section signal 130.

Generator of random provisions 930, for example, is connected with the means of raising the mixing section signal 130 and formed to provide an option for a random position means of raising the mixing section signal 130. Alternatively, the generator of random provisions 930 can be connected with a sectional selector 120 and can provide the option of a random position, when you select a cell signal 122.

Controller 910 in this example, is controlled by the management 912 and connects (shows the reference number 914) with a sectional selector 120, a means of raising the mixing section signal 130 and/or consolidator 140. Controller 910 can deactivate sectional selector 120, a means of raising the mixing section signal 130 and/or unifier 140.

In General, the described invention may provide a better and more realistic sound multiplying mixing such applause signal environment or similar signal environment with fewer artifacts.

Figure 10 shows a block diagram of ways to generate 1000 multi-channel audio, based on the input audio signal according to the exercise of the invention. Way to 1000 includes ensuring 1010 main multi-channel audio, the choice of 1020 or not the choice of the section of the input sound signal, the provision of section 1030 signal multiplying mixing and matching 1040 main multi-channel audio and sectional signal multiplying mixing.

Provided the main multi-channel audio signal is based on the input audio signal.

The choice of 1020 section the sound input is based on the analysis of the input sound signal, where the selected section of the input sound signal, processed, selected section of the input sound signal or reference signal is associated with the selected section of the input sound signal is provided as part signal.

Provided by cell signal multiplying mixing is based on sectional signal.

Through a combination 1040 main multi-channel audio and sectional signal multiplying mixing it turns out multi-channel audio signal.

Some implementation according to the invention related to the method that provides the possibility of raising the mixing of such applause sound sources without any additional information (unmanaged uplifting mix) without common artifacts. Additionally, the described method can provide the opportunity for continuous fading between two different concepts to obtain or enveloping, or immersive (submersible) sound experience.

Some further implementation of the invention related regulated multiplying effect of mixing.

Some implementation according to the invention related to the method, providing the opportunity fading between two different felt impressions of the environment and/or atmosphere in ascending mixing, that can be called around environment and immersive (submersible) environment.

Some implementation according to the invention related means of enhancing main mix signal, which is based on the known method of raising mixing. This increases the mixer can be standard operating point, if the uplifting mix expands the combination of sectional signal multiplying mixing. This may occur, for example, if the controller disables the cell selector tool enhances the mixing section of the signal or unifier.

In General, described the concept can be applied also to other types of signal, instead used for the example of such applause signals. For example, it can also be applied to the sounds produced by rain, bird flock, the sea coast, running like galloping horses, a division of the marching soldiers and so on.

In this application the same reference numbers are partly used for objects and functional sites that have the same or similar functional properties.

In particular indicated that, depending on the conditions, inventive scheme can also be implemented in software. The execution can be carried out on digital media data, in particular, diskette or CD-ROM with electronic signals that can interact with programmable computer system so that run the appropriate way. In General, invention, thus, is a computer software product with the control program, stored in a machine-readable carrier to perform a creative way, when a computer software product is made on the computer. In other words, the invention can thus also be implemented as a computer program with the control program to complete method when a computer software product is made on the computer.

1. Device (100) to generate multi-channel audio (142), based on the input audio signal (102), including means of boosting the main mix signal (110), formed to provide the main multi-channel sound (112), based on the input audio signal (102), where the main multi-channel sound (112) includes more channels than the input audio signal (102); sectional (segment) selector (120), formed to choose or not choose the section (segment) of the input sound signal (102), based on the analysis of the input sound signal (102), where the selected section of the input sound signal (102), treated the selected section of the input sound signal (102) or reference signal is associated with the selected section of the input sound signal (102), is available as a cell signal (122), where sectional selector (120) selects part of the input sound signal (102) through separation point-source; a means of raising the mixing section signal (130), formed to provide a cell signal multiplying mixing (132), based on sectional signal (122), where a means of raising the mixing section signal (130) generates a cell signal multiplying mixing containing more than one point-source; and unifier (140), formed to combine the main multi-channel sound (112) and cell signal multiplying mixing (132)to get multichannel sound (142), where a means of raising the mixing section signal (130) is formed to provide a cell signal multiplying mixing (132), based on the provisions of the multi-channel a sound signal, which is based on sectional signal for each channel multi-channel audio based on the provisions.

2. Device for the generation of multi-channel audio according to claim 1 includes analyzer (810), formed to perform the analysis of the input sound signal (102)to identify the section of the input sound signal (102), which will be chosen.

3. Devices for generation of multichannel a sound signal in paragraph 2, where the analyzer (810) is formed to identify the section of the input sound signal (102) - based authentication parameter contained in the input audio signal (102), on a comparison of the input sound signal to the reference signal or frequency analysis the sound input (102).

4. Device for the generation of multi-channel audio in paragraph 2, where the analyzer (810) provides the option analysis, where the tool enhances the main mix signal (110) provides the main multi-channel audio signal based on a parameter analysis, or a means of raising the mixing section signal (130) provides cell signal multiplying mixing (132), based on the analysis.

5. Device for the generation of multi-channel audio according to claim 1 includes the memory section of the signal (920), formed, to save a cell signal or processed cell signal, where the means of raising the mixing section signal (130) is formed to provide a variety of breakout signals multiplying mixing (132), based on the saved sectional signal saved processed sectional signal, modified, saved sectional signal or modified saved processed sectional signal.

6. Device for the generation of multi-channel audio by item 5, where a means of raising the mixing section signal (130) is formed to provide a certain number of breakout signals multiplying mixing (132), based on the saved sectional signal or saved processed sectional signal, where a certain number of breakout signals multiplying mixing (132) is determined by the density.

7. Device for the generation of multi-channel audio 6 includes the generator of random provisions (930), formed to generate a random parameter provisions.

8. Device for the generation of multi-channel audio in paragraph 1, where a means of raising mixing sectional signal (130) is formed to provide a variety of breakout signals multiplying mixing (132)based on the distribution, where each cell signal multiplying mixing (132) many sectional signal multiplying mixing (132) is based on individual parameter provisions, where many of the parameters of the provisions based on the distribution.

9. Device for the generation of multi-channel audio in paragraph 1, where a means of boosting the main mix signal (110) is formed to weaken the part of the input sound signal (102)associated with the selected section of the input sound signal (102).

11. Way (1000) generation multi-channel audio, based on the input sound signal, including provision (1010) the main multi-channel audio, based on the input sound signal, where the main multi-channel sound (112) includes more channels than the input audio signal (102); choice (1020) or no choice section of the input sound signal based on the analysis of the input sound signal, where the selected section of the input sound signal, processed, selected section of the input sound signal or current signal associated with the selected section of the input sound signal is provided as cell signal, where the choice (1020) section of the input sound signal (102) is performed through separation point-source; generating sectional signal multiplying mixing containing more than one point-source based on sectional signal; provision (1030) of section signal multiplying mixing; and the combination of (1040) the main multi-channel audio and sectional signal multiplying mixing to get multichannel sound signal, where sectional signal multiplying mixing (132) is provided (1030), based on the provisions of the multi-channel audio, which is based on sectional signal for each channel multi-channel audio based on the provisions.

12. The machine-readable medium containing the stored on it a computer program with program code, capable of performing the method according to claim 11, where a computer program is performed by the computer or processor.