KR100552605B1 - Multi track audio format converting/recovering method and system - Google Patents

Abstract

A method and system for multitrack audio format conversion / playback are disclosed. The multi-track audio format converting method according to the present invention is a multi-track audio format converting method capable of selecting and controlling only audio data of a desired track among a plurality of tracks. Recording step; (b) converting audio data stored in each track into digital audio data form; (c) converting respective digital audio data stored in the tracks to generate a multi-track audio format; And (d) mastering the sound source data of the multi-track audio format and storing it in an audio storage medium. The multi-track audio format conversion / playback method and system according to the present invention can listen to music by selectively reconfiguring only a sound source (vocals, drums, etc.) desired by a music listener, and newly mix each sound source each time. There is an advantage that you can hear.

Description

Multi track audio format converting / recovering method and system

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 is a diagram illustrating a general audio recording process.

2 is a flowchart illustrating a method of converting a multi-track audio format according to the present invention.

3 is a conceptual diagram illustrating a method of converting a multi-track audio format of FIG. 2.

FIG. 4 is a flowchart for describing the multitrack audio data generating step of FIG. 2.

5 is a block diagram illustrating a multi-track audio format conversion system according to the present invention.

6 is a block diagram illustrating a data converter of FIG. 5.

7 is a diagram for explaining the structure of compressed digital audio data.

8 is a diagram illustrating a process of synthesizing compressed digital audio data into a multitrack audio format.

FIG. 9 is a diagram for explaining a method of synthesizing a continuous body of each track. FIG.

10 is a diagram for explaining the structure of digital audio data.

11 is a flowchart illustrating a method of playing a multitrack audio format according to the present invention.

FIG. 12 is a flowchart for explaining digital audio data reproduction steps for tracks of FIG. 11.

13 is a block diagram illustrating a multi-track audio format reproduction system according to the present invention.

FIG. 14 is a block diagram illustrating a structure of the digital audio data reproducing unit of FIG. 13.

The present invention relates to a method and system for converting and reproducing audio data. More particularly, the present invention relates to converting a sound source of several tracks into a single multi-track audio format, and controlling the converted multi-track audio format for each track. The present invention relates to a multitrack audio format conversion / playback method and system for selecting and listening to desired tracks or reconstructing music.

Audio storage media are conventionally represented as cartridges, tapes, and records, and are used as compact discs (hereinafter referred to as CDs), which are digital media, and MP3 and ACC, which are compressed audio formats due to the computer environment and the spread of the Internet. , WMA and the like are stored and used in computer hard disk drives (HDD) and flash memory (flash memory).

 Moving from analog media to digital media, CD has adopted the method of storing 44100 samples per second with 16bit resolution of the analog audio source to ensure the sound quality of digital audio. Use the method. Compressed audio formats, such as MP3, are smaller than data stored on CDs, and sound quality is not significantly reduced compared to CDs.

Regardless of the audio format described above, audio sources are stored and used in the early mono format, and since the stereo recording method was introduced in the 1950's, the stereo method has been used in compressed audio formats such as MP3.

The stereo system records the left and right channels separately during the music mast mix so that the listener can listen to the music and make a stereoscopic sound by leaving different sounds in the left and right channel speakers. In this stereo system, the sound source listened to by the listener is a stereo sound source master mixed in the studio, but each sound source for the instrumental and vocal tracks is independently present before the master sound is actually mixed.

1 is a diagram illustrating a general audio recording process.

Referring to FIG. 1, in the general audio recording process 100, the number of tracks is determined and played according to the intention of a record producer according to a musical instrument arrangement and a vocal arrangement used for recording. 110. That is, the number of sound sources The number of tracks to be recorded is determined by the same number.

 Each sound source is recorded for each corresponding track (120). The sound sources recorded for each instrument and vocal are mast mixed using a multi track recorder (130). Finally, the master mixed sound source is stored in the audio storage medium in the mastering step and delivered to the listeners (140).

However, since the stereo or mono audio data passed through the mast mix transmitted from the music supplier to the record listener is only an unmodifiable audio data format for the listener, the interactive method desired by current listeners, that is, vocals only There is a problem that cannot satisfy the demands of listeners' tastes, such as listening or listening to only one of the instruments.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a multitrack audio format conversion and playback method in which listeners can selectively listen to a sound source of a desired track or reconstruct music.

Another object of the present invention is to provide a multitrack audio format conversion and playback system that allows listeners to selectively listen to a sound source of a desired track or to reconstruct music.

The multi-track audio format conversion method according to the first embodiment of the present invention for achieving the above technical problem, in the multi-track audio format conversion method that can select and control only the audio data of the desired track of the plurality of tracks ( a) recording a plurality of sound sources in a corresponding plurality of tracks; (b) converting audio data stored in each track into digital audio data form; (c) converting respective digital audio data stored in the tracks to generate a multi-track audio format; And (d) storing sound source data of the multi-track audio format in an audio storage medium.

The step (c) includes (c1) converting digital audio data of each track into a compressed audio format for each track having a plurality of frame data using an audio compression method; (c2) generating a representative header by separating headers existing in the plurality of frame data, and converting a body existing in each of the plurality of frame data as one continuous body Doing; And (c3) converting the representative header generated for each track as a multi track audio player header, and synthesizing a continuous body generated for each track to convert a multi-track audio format. It is characterized by including.

The step (c3) is a serial synthesis method for continuously arranging successive bodies generated for each track, or a parallel synthesis method for arranging the continuous bodies in parallel in the unit of frame data of each track. It is characterized by synthesizing the continuous body by changing the order and arranging the corresponding continuous body.

The multi-track audio conversion header includes information on a synthesis method used when the representative header generated for each track and successive bodies of each track are generated in one multi-track audio format.

The step (C1) may further include converting the plurality of samples of the digital audio data into a plurality of frame data structures when the digital audio data is not compressed (C11).

The multi-track audio conversion header includes information about the number of samples forming one frame data, that is, N, when the plurality of samples of the digital audio data are grouped into N frames and converted into a frame data structure. .

The audio compression method is characterized by using one of the MPEG method, OGG Vorbis method, Creative VOC method, Next / SNU method, APPLE AIFF method and Windows Medio Audio method.

Step (c) is characterized in that it comprises the step of encoding the encryption code to prevent illegal copying, when the digital audio data is converted.

According to another aspect of the present invention, there is provided a method of reproducing a multitrack audio format, the method including (a) digital audio data for each track using real-time decoding of multitrack audio format data stored in an audio storage medium. Playing with; And (b) reproducing mixed wave data in response to track control signals set by the listener.

The multi-track audio format conversion system according to the first embodiment of the present invention for achieving the another technical problem, in the multi-track audio format conversion system that can select and control only the audio data of the desired track of the plurality of tracks A track storage unit for recording a plurality of sound sources into a plurality of corresponding tracks, a wave extractor for converting audio data stored in each track into digital audio data, and converting each digital audio data stored in the wave extractor And a storage unit configured to generate a multitrack audio format, and a storage unit to store sound source data of the multitrack audio format on an audio storage medium.

The data conversion unit selects whether or not to use a compression scheme when converting data in response to a conversion selection signal, and in response to the first output signal of the selection unit, converts digital audio data of each track into an audio compression scheme. A compression unit for converting each track into a compressed audio format having a plurality of frame data by using a plurality of frames; and in response to a second output signal of the selection unit, a plurality of samples of the digital audio data are grouped by N into a plurality of frame data structures. A frame data converter for converting and generating a representative header by separating the header (header) present in the plurality of frame data, and the body existing in each of the plurality of frame data in one continuous body ( first sub-data conversion unit for converting as a body) and an image generated for each track Generating a representative header as header multitrack audio conversion (multi track audio player), and synthesizes the continuous body produced for each track is characterized in that it comprises a second sub-data transformation part to generate a multi-track audio format.

According to another aspect of the present invention, there is provided a multi-track audio format reproducing system for reproducing multi-track audio format data stored in an audio storage medium as digital audio data for each track using real time decoding. And a mixed wave data reproducing unit for reproducing the digital audio data as mixed wave data in response to a track control signal set by the digital audio data reproducing unit and the listener.

The digital audio data reproducing unit decodes the multitrack audio format by using information on a body synthesis method included in a predetermined multitrack audio reproduction header, so that frame data including a representative header and a continuous body for each track can be obtained. A first sub data reproducing unit for reproducing, a reproducing selection unit for selecting whether or not to use a compression decoding method when reproducing data in response to a reproducing selection signal, and when the audio compression method is used during the conversion of the multi-track audio format In response to the first output signal of the reproduction selection unit, a second sub data reproducing unit, which separates each header from the representative header, combines the separated header and the corresponding body, and reproduces them in compressed audio format for each track, multi-track audio. Audio compression is not used during the conversion of the format. And in response to the second output signal of the reproduction selection unit, separate the respective headers from the representative headers, and sample the frame data by using information about N, that is, the number of samples constituting each frame data stored in the header. And a compression decoding unit for decoding the compressed audio format output from the second sub data reproducing unit and reproducing the digital audio data for each track.

DETAILED DESCRIPTION In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

2 is a flowchart illustrating a method of converting a multitrack audio format according to a first embodiment of the present invention.

Referring to FIG. 2, in the multi-track audio format conversion method 200 of the present invention, first, a plurality of sound sources are recorded on a plurality of corresponding tracks (step 210). The audio data stored in each track is digital audio data format. (Step 220).

The digital audio data stored in the tracks is converted to generate a multi-track audio format (step 230). Finally, sound source data of the multi-track audio format is stored in an audio storage medium (step 240).

The multitrack audio format conversion method of FIG. 2 may be implemented by the multitrack audio format conversion system of FIG. 5.

Referring to FIG. 5, the multi-track audio format conversion system 500 includes a track storage unit 510, a wave extractor 520, a data converter 530, and a storage unit 540. .

The track storage unit 510 records a plurality of sound sources in a plurality of corresponding tracks. The wave extractor 520 converts the audio data AD stored in each track into digital audio data DAD.

The data converter 530 converts each digital audio data DAD stored in the wave extractor 520 to generate a multi-track audio format MTAP. The storage unit 540 stores sound source data of a multi-track audio format (MTAP) on an audio storage medium.

3 is a conceptual diagram illustrating a method of converting a multi-track audio format of FIG. 2.

Referring to FIG. 3, the multi-track audio format conversion method 200 and the multi-track audio conversion system 500 will be described in more detail. The number is determined and played (310). Then, the sound source played for each track is recorded for each track (320). This corresponds to step 210 of FIG. 2.

The sound sources recorded for each track are not mast-mixed, but audio data entering each track is extracted in the form of a wave digital form (330). Conventionally, the sound sources recorded for each track are mast-mixed, but are converted into digital forms in the present invention. This operation corresponds to step 220 of FIG. 2.

Each wave digital form of data is stored 340 in a multi-track audio format. This corresponds to step 230. Finally, one multi-track audio format sound source containing all the audio data for each track is stored in the audio storage medium and delivered to the listeners (350).

Listeners can select and listen to the desired track or reconstruct the music using a player dedicated to the multi-track audio format. This will be described later.

FIG. 4 is a flowchart for describing operation 230 of FIG. 2.

Operation 230 corresponds to an operation of the data converter 530 of FIG. 5. FIG. 6 is a block diagram illustrating a configuration of the data converter 530 of FIG. 5. Therefore, the operation of the multitrack audio format conversion method and system of the present invention will be described in more detail with reference to FIGS. 4 and 6.

In order to convert the digital audio data DAD into a multi-track audio format MTAP, it is first determined whether or not the digital audio data DAD is compressed using an audio compression method (step 410). The conversion selector 610 performs an operation corresponding to step 410.

That is, the conversion selector 610 compresses the digital audio data DAD in response to the conversion selection signal TRSEL and converts the digital audio data into the multitrack audio format MTAP without converting it into the multitrack audio format MTAP. In operation, the first output signal SEL1 or the second output signal SEL2 is output. The conversion selection signal TRSEL is a signal that a user of the multi-track audio conversion system 500 determines and compresses the digital audio data DAD.

If the digital audio data DAD is compressed, the conversion selector 610 outputs the first output signal SEL1 to the compression unit 620 to operate the compression unit 620. If the digital audio data DAD is not compressed, the second output signal SEL2 is output to the frame data converter 650 to operate the frame data converter 650.

If the compression scheme is used, the digital audio data (DAD) of each track is converted into a compressed audio format for each track having a plurality of frame data using the audio compression scheme (step 420). The corresponding operation is performed.

The audio compression method may be one of MPEG, OGG Vorbis, Creative VOC, Next / SNU, APPLE AIFF, and Windows Medio Audio. However, although not listed here, other compression schemes may be used.

The structure of the compressed digital audio data DAD will be described with reference to FIG.

7 is a diagram for explaining the structure of compressed digital audio data.

Compressed digital audio data generally has a structure in which data of a small size called a frame are continuously connected as shown in FIG. Each frame of compressed digital audio data is composed of a frame header and a frame body.

The frame header contains a synchronization code that indicates the start of a new frame and compression information of the corresponding frame. The frame body contains audio data that is actually compressed.

One representative header is generated by separating headers existing in the plurality of frame data, and a body existing in each of the plurality of frame data is converted as one continuous body. In operation 430, the first sub data converter 630 performs a corresponding operation.

The size of the frame header is constant, and the size of the body is determined by the compression information of the header, that is, the bit rate and the sampling rate. In the case of a format in which the compression rate is changed with respect to the compressed digital audio format, the body size is variable, but in a format in which the compression rate is constant, the body size is also constant.

When compressing data, specific options can be given to make the size and content of the frame header constant for the entire frame. In addition, if the compression format uses a constant audio format, the size of the frame body is also constant, so that each frame can be accessed without referring to the header synchronization code.

Therefore, when the digital audio data is compressed, the header of each frame may be replaced with one representative header. 7 (c) shows compressed digital audio data reconstructed into a structure of one representative header and a continuous body.

For example, in the case of MP3, when a song having a playback time of about 54 minutes is compressed at a compression rate of 128 Kbps and a resolution of 44100 Hz, it is compressed to more than 1000 frames. In this case, 1000 frame headers are replaced with one representative header and compressed digital audio It can reduce the size of the data.

The representative header generated for each track is converted as a multi track audio player header, and successive bodies generated for each track are synthesized and converted into a multi track audio format (step 440). The two sub data converters 640 perform corresponding operations.

8 is a diagram illustrating a process of synthesizing compressed digital audio data into a multitrack audio format.

The present invention has a plurality of tracks, and three tracks are shown in Fig. 8A as an example. In each track Track1, Track2, and Track3, there is compressed digital audio data having one representative header and a continuous body structure as shown in FIG. 7 (c).

Since the same compression scheme is applied to the representative header of each track, the representative header of each track is the same. Therefore, these representative headers can be represented by one multi-track audio conversion header. This is shown in Figure 8 (b). In the multi-track audio conversion header, representative headers included in all frames of all tracks are represented by one header. At this time, each representative header may be modulated for security.

The multi-track audio conversion header also contains information about a synthesis method (MTAP INFO) used when the frames of each track are synthesized in one multi-track audio format.

FIG. 9 is a diagram for explaining a method of synthesizing a continuous body of each track. FIG.

9A illustrates a series synthesis method in which successive bodies of each track are continuously arranged. After the bodies of the first track are connected in series, the bodies of the second track are connected in series, followed by the bodies of the third track.

9 (b) illustrates a parallel synthesis scheme. The first bodies of each track are connected to each other, the second bodies of each track are subsequently connected and the Nth bodies of each track are connected in the same way.

9 (c) and 9 (d) illustrate a method of synthesizing by changing the order of bodies.

9A and 9B may be easily compressed, but may be easily separated into compressed audio data files of several tracks. To compensate for this, the order of the bodies is changed.

In this case, the encryption code generated for the frame order according to the number of frames is included in the multi-track audio conversion header, and the encryption code can be interpreted at the time of reproduction to rearrange the frame order.

FIG. 9C shows only the order of the bodies in the synthesis method of FIG. N1, N2, and N3 are marks indicating arbitrary bodies. That is, N1 may be the third body (body3), N2 may be the second body (body2) and N3 may be the third body (body3). FIG. 9 (d) changes only the order of the bodies while leaving the order of tracks in the synthesis method of FIG. 9 (b).

The synthesis scheme for forming the multitrack audio format is not limited to that described above, but there may be various other schemes.

The operation of the data converter 530 in the case of compressing digital audio data has been described so far. Hereinafter, a method of converting digital audio data into a multitrack audio format without compression will be described.

When the digital audio data is not compressed, the plurality of samples of the digital audio data are grouped by N and converted into a plurality of frame data structures (step 450). In this case, the multi-track audio conversion header forms one frame data. The information on the number of samples to be made, that is, N, is provided.

The frame data converter 650 of FIG. 6 performs a corresponding operation. That is, the frame data converter 650 converts the plurality of samples of the digital audio data DAD into a plurality of frame data structures in response to the second output signal SEL2 of the conversion selector 610. .

10 is a diagram for explaining the structure of digital audio data.

Referring to FIG. 10A, the digital audio data is composed of a continuous connection of digital samples extracted from an analog sound source according to a sampling rate. One sample represents the negative of time corresponding to the inverse of the resolution (1 / resolution), and all samples have the same time interval. Digital audio data does not have a special frame structure, unlike compressed audio formats.

For example, the number of samples of digital audio data includes 44100 sound source samples per second when the resolution is 44100 Hz, and thus 44100 * 60 * 5 = 13230000 samples for 5 minutes of music.

When these samples are bundled into a certain number and processed as one frame, the digital audio data is reconstructed into a continuous frame structure. Such a structure is illustrated in Fig. 10 (b). The digital audio data having such a structure can be formed using a method similar to that of forming a multitrack audio format using an audio compression method.

The number of samples forming one frame includes information in the multi-track audio conversion header and can be used to obtain track-specific waves during playback.

Data converted from the frame data converter 650 to the structure of FIG. 10 (b) may be applied to the first sub data converter 630 and converted into a multi-track audio format in the same manner as described above. .

The multi-track audio format conversion method 200 may further include encoding an encryption code for preventing illegal copying when the digital audio data is converted. The encryption unit 660 of FIG. 6 performs a corresponding operation. Sound source data of a multi-track audio format is stored in an audio storage medium and delivered to the listeners (step 240).

11 is a flowchart illustrating a method of playing a multitrack audio format according to the present invention.

In the method 1100 of reproducing a multitrack audio format according to the present invention, first, multitrack audio format data stored in an audio storage medium is reproduced as digital audio data for each track using real time decoding (step 1110). The mixed wave data is reproduced in response to the track-specific control signal set in step 1120.

The multitrack audio format reproduction method 1100 of FIG. 11 may be implemented by the multitrack audio format reproduction system 1300 of FIG. 13.

Referring to FIG. 13, the multi-track audio format reproducing system 1300 includes a digital audio data reproducing unit 1310 and a mixed wave data reproducing unit 1320.

More specifically, the digital audio data reproducing unit 1310 reproduces the multi-track audio format data stored in the audio storage medium as digital audio data for each track using real time decoding. The mix wave data reproducing unit 1320 reproduces the digital audio data as mixed wave data in response to track control signals set by the listener.

FIG. 12 is a flowchart for explaining digital audio data reproduction steps for tracks of FIG. 11.

FIG. 14 is a block diagram illustrating a structure of the digital audio data reproducing unit of FIG. 13.

A method of reproducing digital audio data will be further described with reference to FIGS. 12 and 14. First, the multi-track audio format is decoded by using information on a body synthesis method included in a predetermined multi-track audio reproduction header to reproduce frame data including a representative header and a continuous body for each track. Step 1210 corresponds to an operation of the first sub data reproducing unit 1410.

Here, the multi-track audio reproduction header is the same as the multi-track audio conversion header described above. Therefore, as described in the multi-track audio format conversion method 200 and the system 500, the multi-track audio playback header includes representative headers provided for every frame of all tracks and a composition method of the body when the multi-track audio format is converted. Represented by a header and included.

The multi-track audio format is reproduced for each track by the first sub data reproducing unit 1410 having a representative header and a continuous body structure corresponding thereto as shown in FIG.

It is determined whether the audio compression scheme is used in the multi-track audio format conversion process (step 1220). The operation of step 1220 corresponds to the operation of the reproduction selection unit 1420. FIG.

The reproduction selection unit 1420 selects whether or not to use a compression decoding method when reproducing data in response to the reproduction selection signal RESEL. That is, if the audio compression method is used in the multi-track audio format conversion process, the reproduction selecting unit 1420 applies the first output signal RSEL1 to the second sub data reproducing unit 1430, and reproduces the audio compression method if it is not used. The selector 1420 applies the second output signal RSEL2 to the sample reproducer 1450.

The reproduction selection signal RESEL is a signal that a user of the multi-track audio reproduction system 1300 determines and inputs using a compression decoding scheme.

When the audio compression scheme is used in the conversion of the multi-track audio format, each header is separated from the representative header, and the separated header and the corresponding body are combined to reproduce the compressed audio format for each track (step 1230). Operation 1230 corresponds to operation of the second sub data reproducing unit 1430.

The second sub data reproducing unit 1430 separates each header corresponding to each frame included in the representative header of each track. Then, the separated header and the corresponding body are combined to reproduce the compressed audio format having the structure as shown in FIG. The compressed audio format as shown in FIG. 7 (b) exists for each track.

The compressed audio format is decoded and reproduced as digital audio data for each track. (Step 1240) Step 1240 corresponds to the operation of the compression decoding unit 1440. Digital audio data is reproduced by a method of decoding the compression method used in the multi-track audio conversion method.

When the audio compression scheme is not used during the conversion of the multi-track audio format, each header is separated from the representative header, and the number of samples constituting each frame data stored in the header, that is, N information is used. The frame data is reproduced in a structure in which samples are connected (step 1250).

Step 1250 corresponds to the operation of the sample reproducing unit 1450. Operation 1250 is a reverse process of operation 450 of FIG. 4, and a person skilled in the art may know from what has been described above with reference to FIG. 10, and thus detailed description thereof will be omitted.

When an encryption code is included to prevent illegal copying during the conversion of the multitrack audio format, the encryption code 1460 is used to decode the encryption code.

The reproduced track-specific digital audio data is reproduced as mixed wave data in response to track control signals set by the listener (step 1120). The track control signals are controlled by the listener, such as adjusting volume or stereo sound. These are the signals that can reconstruct the music. The mixed wave data of stereo or mono is reproduced by the track control signal, and the listener can select a track to listen to music or reconstruct the music.

According to the present invention, the listener can select only a vocal or a drum, and listen to music according to his or her taste, and can also listen to music by newly mixing each sound source. The multi-track audio format can be recorded as a small data file along with audio files on an audio CD or the like. Then, the audio file can be enjoyed by a general audio CD player, and the multi-track audio format is executed by a dedicated playback system to allow selective music listening.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, the multi-track audio format conversion / playback method and system according to the present invention can listen to music by selectively reconfiguring only a sound source (vocals, drums, etc.) that a music listener wants, and each time each sound source is listened to. There is an advantage that you can listen to a new mix.

Claims (21)

In the multi-track audio format conversion method capable of selecting and controlling only audio data of a desired track among a plurality of tracks, (a) recording a plurality of sound sources into a corresponding plurality of tracks; (b) converting audio data stored in each track into digital audio data form; (c) converting respective digital audio data stored in the tracks to generate a multi-track audio format; And (d) storing the sound source data of the multi-track audio format in an audio storage medium. The method of claim 1, wherein step (c) comprises: (c1) converting digital audio data of each track into a compressed audio format for each track having a plurality of frame data using an audio compression method; (c2) generating a representative header by separating headers existing in the plurality of frame data, and converting a body existing in each of the plurality of frame data as one continuous body Doing; And (c3) converting the representative header generated for each track as a multi track audio player header, and synthesizing successive bodies generated for each track to a multi-track audio format. Multi-track audio format conversion method characterized in that. The method of claim 2, wherein step (c3), A serial synthesizing method for continuously arranging successive bodies generated for each track, or a parallel synthesizing method for arranging the continuous bodies in parallel in the unit of frame data of each track, or by changing the order of frame data. And synthesizing the continuous bodies using a method of arranging the continuous bodies. The method of claim 2, wherein the multi-track audio conversion header, And information on a synthesis method used when the representative header generated for each track and successive bodies of each track are generated in one multi-track audio format. The method of claim 2, wherein (C1) step, (C11) if the digital audio data is not compressed, converting the plurality of samples of the digital audio data into groups of N and converting the plurality of frames into a plurality of frame data structures. The method of claim 5, wherein the multi-track audio conversion header, In the case of converting a plurality of samples of the digital audio data into a frame data structure by N, the number of samples forming one frame data, that is, information about N is provided. . The method of claim 2, wherein the audio compression method, A method for converting a multi-track audio format, using one of MPEG, OGG Vorbis, Creative VOC, Next / SNU, APPLE AIFF, and Windows Medio Audio. The method of claim 1, wherein step (c) comprises: And encoding an encryption code for preventing illegal copying when converting the digital audio data. In the multi-track audio format playback method, (a) reproducing the multi-track audio format data stored in the audio storage medium as digital audio data for each track using real time decoding; And (b) reproducing mixed wave data in response to track control signals set by the listener; In step (a), (a1) decoding the multi-track audio format using information on a body synthesis method included in a predetermined multi-track audio reproduction header, and reproducing frame data including a representative header and a continuous body for each track; ; (a2) when the audio compression scheme is used in the conversion of the multi-track audio format, separating each header from the representative header and combining the separated header and the corresponding body to reproduce the compressed audio format for each track; And (a3) decoding the compressed audio format and playing the digital audio data for each track. delete The method of claim 9, wherein step (a2) comprises: (a21) When the audio compression scheme is not used during the conversion of the multi-track audio format, the number of samples constituting each frame data stored in the header, i.e., N, is separated from the representative header, and information about N is used. And reproducing the frame data in a structure in which samples are concatenated using the multi-track audio format. The method of claim 9, wherein step (a) comprises: And if an encryption code is included in the conversion of the multitrack audio format, decoding the encryption code. In the multi-track audio format conversion system that can selectively control only the audio data of the desired track of the plurality of tracks, A track storage unit for recording a plurality of sound sources in a corresponding plurality of tracks; A wave extracting unit for converting audio data stored in each track into digital audio data form; A data converter configured to convert each digital audio data stored in the wave extractor to generate a multitrack audio format; And And a storage unit which stores sound source data of the multi-track audio format in an audio storage medium. The method of claim 13, wherein the data conversion unit, A conversion selector for selecting whether or not to use a compression method when converting data in response to a conversion selection signal; A compression unit for converting digital audio data of each track into a compressed audio format for each track having a plurality of frame data using an audio compression scheme in response to the first output signal of the conversion selection unit; A frame data converter for converting N samples of the digital audio data into a plurality of frame data structures in response to a second output signal of the conversion selector; A first header for generating a representative header by separating headers existing in the plurality of frame data, and converting a body existing in each of the plurality of frame data as one continuous body Sub data converter; And A second sub data converter configured to generate the representative header generated for each track as a multi track audio player header, and synthesize a continuous body generated for each track to generate a multi track audio format; And a multi-track audio format conversion system. The method of claim 14, wherein the second sub data converter, A serial synthesizing method for continuously arranging successive bodies generated for each track, or a parallel synthesizing method for arranging the continuous bodies in parallel in the unit of frame data of each track, or by changing the order of frame data. And synthesizing the continuous bodies using a method of arranging the continuous bodies. The method of claim 14, wherein the multi-track audio conversion header, And information on a synthesis method used when the representative header generated for each track and successive bodies of each track are converted into one multi-track audio format. The method of claim 14, wherein the audio compression method, Method of generating a multi-track audio format characterized by using one of the MPEG method, OGG Vorbis method, Creative VOC method, Next / SNU method, APPLE AIFF method and Windows Medio Audio method. The method of claim 13, wherein the data conversion unit, And converting an encryption code for preventing illegal copying when converting the digital audio data. In a multitrack audio format playback system, A digital audio data reproducing unit for reproducing multi-track audio format data stored in an audio storage medium as digital audio data for each track using real time decoding; And A mix wave data reproducing unit configured to reproduce the digital audio data as mixed wave data in response to a track control signal set by a listener; The digital audio data reproducing unit, First sub data which decodes the multi-track audio format by using information on a body synthesis method included in a predetermined multi-track audio reproduction header and reproduces frame data including a representative header and a continuous body for each track. Regeneration unit; A reproduction selecting section for selecting whether or not to use a compression decoding method when reproducing data in response to a reproduction selecting signal; When the audio compression scheme is used during the conversion of the multi-track audio format, in response to the first output signal of the playback selection unit, the respective headers are separated from the representative header, and the respective headers and the corresponding bodies are combined to separate each track. A second sub data reproducing unit for reproducing in a separate compressed audio format; When the audio compression method is not used during the conversion of the multi-track audio format, in response to the second output signal of the reproduction selection unit, a sample for separating each header from the representative header and configuring each frame data stored in the header A sample reproducing unit reproducing the frame data into digital audio data having a structure in which samples are connected by using information about the number, i. And And a compression decoding unit which decodes the compressed audio format output from the second sub data reproducing unit and reproduces the digital audio data for each track. delete The digital audio data reproducing unit of claim 19, If the encryption code is included in the conversion of the multi-track audio format, the multi-track audio format playback system, characterized in that it further comprises an encryption and decoding unit for decoding the encryption code.

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