JP2003228963A - Recording medium, device and method for data recording, and device and method for data editing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily connect programs which differ in reproduction speed together in one. <P>SOLUTION: The mean value of tempo information of audio programs inputted to be connected together in one is calculated and tempo information of each audio program is converted into the mean value; and section positions for sectioning each inputted audio program into phrases are generated and according to the section positions of the respective audio programs, a plurality of the audio programs having tempo information converted into the mean value are put together into one audio program. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention extracts a reproduction speed and a delimiter position from a program and collectively records these data on a recording medium, or uses the extracted reproduction speed and the delimiter position. Apparatus and method capable of collecting a plurality of different programs, such as a plurality of audio data having different tempos, into one.

[0002]

2. Description of the Related Art Conventionally, in dance music used for dancing, music pieces having different tempos may be collectively reproduced. In this case, the disc jockey plays one of the songs to be spliced together so that the tempo is slightly slower, and the other song is played with the tempo slightly faster, so that there is a good break between the songs. , One music is switched to the other music.

[0003]

However, the operation of joining music pieces having different tempos as described above requires skill and cannot be done by everyone. This is because it is extremely difficult to adjust the tempo of each piece of music to be connected and to specify the position to connect the pieces of music.

The present invention has been made in view of the above problems, and an object of the present invention is to divide a program main body reproduction speed and a program main body, which are necessary for easily connecting programs having different reproduction speeds. It is an object of the present invention to provide a recording medium and a data recording device and method capable of recording these data on a recording medium in which positions and positions are recorded together.

Another object of the present invention is to extract a reproduction speed of a program body and a delimiter position for separating the program body, which are necessary for easily connecting programs having different reproduction speeds, and easily reproduce the reproduction speeds. An object of the present invention is to provide a data editing device and method capable of connecting programs.

[0006]

A recording medium according to the present invention is recorded with a plurality of programs reproducible by a data reproducing apparatus, each program including a main body section,
It includes a reproduction speed of the main body and a division position for dividing the main body into predetermined units.

A data recording apparatus according to the present invention for recording such data on a recording medium comprises input means for inputting a program, calculation means for calculating a reproduction speed of the program input by the input means, and input means. The program further includes a generation unit that generates a delimiter position that delimits the input program into a predetermined unit, and a recording unit that collectively records the program, the reproduction speed, and the delimiter position on a recording medium.

A data recording method according to the present invention using such a data recording device calculates a reproduction speed of an input program, generates a delimiter position for dividing the program into predetermined units, and determines the program and the reproduction speed. And the delimiter position are collectively recorded on the recording medium.

Further, the data editing apparatus according to the present invention comprises an input means for inputting a plurality of programs, and a first extracting means for extracting the reproduction speed of the programs from the respective programs input by the input means. An average value calculation means for calculating an average value of the reproduction speeds of the plurality of programs extracted by the first extraction means, a conversion means for converting the reproduction speeds of the respective programs input from the input means into an average value, and an input means. Second extraction means for extracting a delimiter position for delimiting each inputted program into a predetermined unit, and delimiter position of each program extracted by the second extracting means, the conversion means converts the reproduction speed into an average value. And a synthesizing means for synthesizing a plurality of programs into one and synthesizing them into one program.

The data editing method according to the present invention using such a data editing apparatus extracts the reproduction speeds of the programs from the respective input programs, calculates the average value of these reproduction speeds, and reproduces the respective programs. The speed is set to an average value, a division position for dividing each input program into predetermined units is generated, and based on the division position of each program, a plurality of programs whose reproduction speeds are averaged by the conversion means are connected to one program. , Combine into one program.

Further, the recording medium according to the present invention has a plurality of audio programs recorded thereon which can be reproduced by an audio program reproducing apparatus, each audio program including a program main body constituting audio data, and It includes tempo information of audio data forming the program body and a delimiter position that divides the program body into one or a plurality of phrases.

A data recording apparatus according to the present invention for recording such data on a recording medium comprises input means for inputting an audio program, calculation means for calculating tempo information of the audio program input by the input means, A generation unit that generates a delimiter position that delimits the audio program input by the input unit into one or a plurality of phrases, and a recording unit that collectively records the audio program, tempo information, and the delimiter position on a recording medium. Prepare

A data recording method according to the present invention using such a data recording device calculates tempo information of an input audio program and generates a delimiter position for dividing the audio program into one or a plurality of phrases. Then, the audio program, the tempo information, and the delimiter position are collectively recorded on the recording medium.

Further, the data editing apparatus according to the present invention comprises input means for inputting a plurality of audio programs, and first extracting means for extracting the tempo of the audio program from each audio program input by the input means. An average value calculating means for calculating the average value of the tempos of the plurality of audio programs extracted by the first extracting means, a converting means for converting the tempo of each audio program input from the input means to the average value, and an input means. First extraction means for extracting a delimiter position that delimits each of the audio programs input by each phrase into one or more phrases,
And a synthesizing unit for synthesizing one audio program by connecting a plurality of audio programs whose tempo is averaged by the converting unit at a delimiter position of each audio program extracted by the second extracting unit.

The data editing method according to the present invention using such a data editing apparatus extracts the tempo of an audio program from each of a plurality of input audio programs, calculates the average value of these tempos, and calculates the audio tempo of each audio program. The tempo of the program is averaged, the delimiter positions that delimit each input audio program into one or more phrases are extracted, and a plurality of tempo values are averaged by the conversion means at the extracted delimiter positions of each audio program. Connect the audio programs of to one, and synthesize into one audio program.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A data editing apparatus to which the present invention is applied will be described below with reference to the drawings. This data editing device is a device capable of connecting another audio program having a different tempo without interruption from the middle of the audio program. Specifically, as shown in FIG. 1, the data editing apparatus 10 includes an input unit 11 into which an audio program is input, and a tempo extraction unit 12 that extracts the tempo of the audio program input into the input unit 11.
And a delimiter position detection unit 13 that detects a delimiter position that delimits the audio program input to the input unit 11, a delimiter information generation unit 14 that generates delimiter information based on the output from the delimiter position detection unit 13, and an input unit. An audio program input from 11, the tempo information extracted by the tempo extraction unit 12, and the delimiter information generated by the delimiter information generation unit 14 are included in a recording data generation unit 15 that generates recording data.

Further, the data editing apparatus 1 includes an average value calculating section 16 for calculating an average value of tempo information of a plurality of audio programs extracted by the tempo extracting section 12, and an average of tempo information calculated by the average value calculating section 16. A tempo conversion unit 17 that converts the tempo of the audio program input from the input unit 11 based on the value, a delimiter information extraction unit 18 that extracts delimiter information from the audio program input to the input unit 11, and a tempo to the average value. And a synthesizing unit 19 that integrally connects the converted audio programs on the time axis without interruption by referring to the delimiter information.

Further, the data editing apparatus 1 includes a compression unit 20 for compressing the data input from the recording data generation unit 15 or the synthesis unit 19, and a recording process for performing a recording process for recording the compressed data on the recording medium 21. And a section 22. In addition, the data editing device 1 uses the recording medium 21 as a reproducing system.
A reproduction processing unit 23 that performs a reproduction process on the read data, a decompression unit 24 that decompresses the compressed data, and an output unit 25 that outputs the decompressed data are provided.

From the input unit 11, an audio program reproduced by another reproducing apparatus is inputted by wire or wirelessly, and an audio program reproduced by this apparatus is inputted. Further, the audio program downloaded or streaming via the network is input from the input unit 11.

The tempo extraction section 12 extracts the tempo of a music piece from an audio program and generates tempo information. As shown in FIG. 2, the tempo extraction section 12 selects a bass rhythm instrument such as a bass guitar or a drum from the audio program. Low-Pass Filter for extracting the signal:
Hereinafter, it is simply referred to as LPF. ) 31 and an envelope extraction unit 32 that extracts an envelope from the components output from the LPF 31.
A peak detector 33 that detects a peak value from the envelope extracted by the envelope extractor 32; and a normalization processor 34 that performs normalization to eliminate variations in the time axis direction.
The audio program input to the input unit 11 is an LP having a cutoff frequency of 100 to 250 Hz, for example.
Input to F31. The LPF 31 is a drum,
A signal component of a low-frequency rhythm instrument such as a bass guitar is extracted and output to the envelope extraction unit 32. The envelope extraction unit 32 includes, for example, a full-wave rectifier and an LPF, and extracts the envelope of the amplitude of the low-frequency rhythm musical instrument. And the peak detector 3
3 detects the peak of the envelope of the amplitude of the extracted low-frequency rhythm musical instrument. As a result, a rhythm pattern of the audio program corresponding to the time when the low-frequency rhythm musical instrument is struck is formed, and the normalization processing unit 34 normalizes and normalizes this rhythm pattern in the time axis direction to eliminate variations. The tempo of the audio program is extracted from the rhythm pattern, and tempo information is generated based on this.

Further, when the tempo information, the partition information, and the data integrated with the audio program shown in FIG. 5, which will be described later, are input to the input unit 11, the tempo extraction unit 12 extracts the tempo information from this data. , And outputs to the average value calculation unit 16.

The delimiter position detector 13 detects a phrase delimiter of the audio program. As shown in FIG. 4, an audio program is generally provided with a prelude part 51, a vocal part 52, and an interlude part 53 in that order, and then,
The vocal section 52 and the interlude section 53 are repeatedly provided a predetermined number of times. The partition position detection unit 13 has arrows A to B in FIG.
As shown by D, the boundary between the prelude part 51 and the vocal part 52, the boundary between the vocal part 52 and the interlude part 53, and the interlude part 5.
The position where the audio program is separated, such as the boundary between 3 and the vocal part 52, that is, the boundary of the phrase is detected. This can be detected by detecting the presence or absence of vocals, ie a human voice.

The delimiter position detecting unit 13 will be described in detail with reference to FIG. 3. The delimiter position detecting unit 13 is a band-pass filter (Band-Pass Filter) for extracting a signal in a vocal band. It is called BPF.) 41
And an envelope extraction unit 42 that extracts an envelope from the component output from the BPF 41, and a level detection unit 43 that detects the start position and the end position by detecting the level of the vocal unit 52. The audio program input to the input unit 11 has a vocal component extracted by the BPF 41 and output to the envelope extraction unit 42. The envelope extraction unit 42 includes, for example, a full-wave rectifier and an LPF, and extracts the envelope of the vocal amplitude. Then, the level detection unit 43 determines whether the amplitude becomes equal to or more than the threshold value. The level detection unit 43 outputs, to the delimiter information generation unit 14, the time points that are below the threshold value and the time points that are above the threshold value in the time axis direction.

The delimiter information generating section 14 generates delimiter information indicating the boundary between the vocal section 52 and the interlude section 53, based on the data input from the delimiter position detecting section 13 at the time when the threshold value or less is reached. . The delimiter information generation unit 14 also generates delimiter information indicating a boundary between the prelude part 51 or the interlude part 53 and the vocal part 52 based on the data input from the delimiter position detection part 13 at the time when the threshold value or more is reached. To generate.

The recording data generator 15 generates recording data to be recorded on the recording medium 21. Specifically, the recording data generation unit 15 integrates the tempo information of the audio program input from the input unit 11 and the tempo information of the audio program extracted by the tempo extraction unit 12 with the delimiter information generated by the delimiter information generation unit 14. Generate recording data.

For example, as shown in FIG. 5, the recording data generation unit 15 is provided with a tempo information recording unit 57 in which tempo information is recorded next to the header unit 56, and then a partition information recording unit 58 in which partition information is recorded. An audio program recording section 5 which is provided and then records an audio program
By providing 9, the recording data capable of integrally handling the tempo information, the partition information, and the audio program is generated. Here, the tempo information recorded in the tempo information recording unit 57 is BPM (Beat Per Minute).
It is also referred to as an audio program and indicates how much time the audio program recorded in the audio program recording section 59 beats in one minute. Further, the partition information recorded in the partition information recording unit 58 is information indicating a phrase delimiter of the audio program recorded in the audio program recording unit 59, which indicates a position where the audio programs are connected, and is also called a break point. One or more partition positions of the audio program are provided in one audio program. The partition information is
The partition position is specified by a method such as how many bar is the partition position from the beginning and how many seconds after the performance starts. Thus, the recording data generator 1
The recording data in which the tempo information, the partition information, and the audio program generated in 5 are integrated is output to the compression unit 20.

The average value calculator 16 receives the tempo information of the audio program extracted by the tempo extractor 12 for each audio program, and calculates the average value of the input tempo information. Specifically, when the tempo information of each of a plurality of audio programs connected to one is input, the average value calculation unit 16 stores the tempo information in the memory, calculates the average value, and calculates the average value as the tempo information. Output to the conversion unit 17.

The tempo information converting section 17 replaces the tempo information of each of a plurality of audio programs connected together with the average value calculated by the average value calculating section 16. That is, an audio program faster than the average value becomes slightly slower, and an audio program slower than the average value becomes slightly faster. As a result, a plurality of audio programs can be made to have the same tempo without significantly changing the tempo of a plurality of audio data connected to each other, that is, without giving the listener a feeling of strangeness.

When the data in which the tempo information, the partition information, and the audio program shown in FIG. 5 are integrated is input to the input unit 11, the delimiter information extraction unit 18 extracts the partition information from this data, Is output to the combining unit 19.

The synthesizing unit 19 receives a plurality of audio programs whose tempos are averaged from the tempo information converting unit 17, and based on the delimiter information from the delimiter information generating unit 14 or the delimiter information extracting unit 18, Performs processing to connect multiple audio programs into one. Specifically, when the user specifies the connecting order of audio programs and the delimiter position of each audio program,
The synthesizing unit 19 performs a process of connecting a plurality of audio programs into one according to these data. For example, as shown in FIG. 6, the delimiter position of the vocal section 52 and the interlude section 53 is designated in the audio program of the first song, and the delimiter position of the vocal section 52 and the interlude section 53 in the second and third songs is designated. When is specified, the synthesis unit 1
9 performs a process of connecting the vocal part 52 of the second song after the interlude part 53 of the first song and connecting the vocal part 52 of the third song after the interlude part 53 of the second song. That is, the combining unit 19
Makes these audio programs one audio program by integrally connecting the audio programs of three songs.

The compression unit 20 receives the data input from the recording data generation unit 15 or the synthesis unit 19 from the ATRAC3 (Adap.
Compressed in a predetermined format such as tive Transform Acoustic Coding 3: trademark) format. The compression format is not limited to this, and may be, for example, MPEG-2AAC.
(Motion Picture Expert Group 2 Advanced Audio Cod
ing: trademark), MP3 (MPEG-1 Audio Layer3: trademark),
TwinVQ (Transform-Domain Weighted Interleave)
Vector Quantization: Trademark, MS Audio (W
MA: Windows Media Audio (trademark), Ogg Vorb
It may be performed by a method such as is (trademark).

The recording processing section 22 performs processing for recording the compressed data input from the compression section 20 on the recording medium 21. The recording processing unit 22 performs modulation processing such as EFM (Eight to Fourteen Modulation) on the compressed data, and then performs CIRC (Cross Interleave R).
Perform error correction coding processing such as eed-Solomon Code).
Then, the recording processing unit 22 outputs the recording-processed data to a recording unit that records the data on the recording medium 21.

The recording medium 21 is a recording medium that can be attached to and detached from a hard disk built in the apparatus body or the apparatus body. The recording medium that can be attached to and detached from the apparatus main body is a magneto-optical disc, a write-once optical disc that uses a dye material for the recording layer, a rewritable optical disc that uses the phase change material for the recording layer, a disc cartridge that uses these discs as the recording medium, and a magnetic There are a tape cassette using a tape as a recording medium, an IC card using a semiconductor memory as a recording medium, and the like. On these recording media 21, data that has been subjected to recording processing by recording means such as an optical pickup and a magnetic head is recorded.

The reproduction processing section 23 performs reproduction processing on the data read by the reproducing means such as an optical pickup and a magnetic head. That is, the reproduction processing unit 23 uses the EFM.
Data demodulated by, for example, is demodulated, and data subjected to error correction coding processing by CIRC or the like is decoded.
Then, the reproduction processing unit 23 outputs the reproduction-processed data to the decompression unit 24.

The decompression unit 24 performs decompression processing on the data compressed in the format such as ATRAC3, and the output unit 25.
Output to. An electroacoustic transducer such as a speaker, an earphone, or a headphone is connected to the output unit 25, and the decompressed data is electroacoustic converted and output.

Next, using the data editing apparatus 10 as described above, tempo information and delimiter information of the audio program are extracted from the audio program and recorded in the recording medium 21 in the format as shown in FIG. The procedure will be described with reference to FIG. For example, when the user operates the selection button that constitutes the operation unit, the audio program input to the input unit 11 is selected, and the recording start button that constitutes the operation unit is activated to start recording the selected audio program. When operated, step S
1, the selected audio program is input to the input unit 11. Specifically, the input unit 11 has an audio program read from another playback device, an audio program downloaded from the server device via the network or being stream-played,
An audio program or the like read from the recording medium 21 is input by wire or wirelessly. Then, the input unit 11 transfers the input audio program to the recording data generation unit 1
5, output to the tempo extraction unit 12 and the delimiter position detection unit 13.

In step S2, the tempo extraction unit 12
Extracts tempo information from the audio program input from the input unit 11. Specifically, as shown in FIG. 2, in the tempo information of the audio program input to the input unit 11, the LPF 31 extracts the signal component of the low-frequency rhythm musical instrument from the audio program, and the envelope extraction unit 32.
The amplitude envelope of the low-frequency rhythm musical instrument is extracted by, and the peak of the amplitude envelope of the low-frequency rhythm musical instrument extracted by the peak detection unit 33 is detected, which corresponds to the time when the low-frequency rhythm musical instrument is struck. The rhythm pattern of the audio program is formed, and is generated by the normalization processing unit 34 normalizing the rhythm pattern in the time axis direction. Then, the tempo extraction unit 12 outputs the generated tempo information to the recording data generation unit 15.

In step S3, the delimiter position detection unit 13 detects the delimiter of the phrase of the audio program input from the input unit 11, and then the delimiter position generation unit 14 generates the delimiter information indicating the frame boundary. . That is, as shown in FIGS. 3 and 4, the delimiter position detection unit 13 extracts the vocal component from the audio program input to the input unit 11 by the BPF 41, and the envelope amplitude of the vocal by the envelope extraction unit 42. Then, the level detection unit 43 outputs to the delimiter information generation unit 14 the time when the amplitude is above the threshold and the time when the amplitude is below the threshold. Then, the delimiter information generation unit 14 generates delimiter information serving as a boundary between the vocal unit 52 and the interlude unit 53 based on the data input from the delimiter position detection unit 13 at the time when the threshold value or less is reached. In addition, the delimiter information generation unit 14 generates delimiter information serving as a boundary between the prelude part 51 or the interlude part 53 and the vocal part 52 based on the data input from the delimiter position detection part 13 at the time when the threshold value or more is reached. To do. Then, the delimiter information generation unit 14 outputs such delimiter information to the recording data generation unit 15.

In step S4, the recording data generation unit 15 receives the audio program input from the input unit 11, the tempo information of the audio program input from the tempo extraction unit 12, and the delimiter information generation unit 14. By combining with the delimiter information of the audio program, recording data having a format as shown in FIG. 5 is generated. Then, the recording data generation unit 15 outputs the generated recording data to the compression unit 20.

In step S5, the recording data generated by the recording data generator 15 is subjected to a recording process for recording it on the recording medium 21. That is, the recording data output from the recording data generation unit 15 is
It is compressed by a method such as TRAC3, and then the recording processing unit 2
2 is subjected to modulation processing such as EFM and error correction encoding processing such as CIRC, and then an optical pickup is applied to the recording medium 21.
It is recorded by recording means such as a magnetic head.

In the audio program recorded on the recording medium 21 as described above, the tempo information and the delimiter information of the audio data are integrally recorded together with the audio data. Therefore, when performing an editing process in which this audio program is integrally connected to another audio program, it is possible to easily convert the audio program into an audio program of the same tempo by using this tempo information, and to divide the audio program having the same tempo into delimiter information. You can easily refer to them and connect them at phrase boundaries to make one audio program.

Next, an editing process for integrally connecting a plurality of audio programs will be described with reference to FIG.
First, in step S11, a plurality of audio programs are input from the input unit 11. Then, a list of input audio programs is displayed on the display unit of the data editing device 10.

The list screen 61 displayed on the display unit is shown in FIG.
As shown in FIG. 3, an input program list display section 62 in which a plurality of audio programs input from the input section 11 are displayed in a list, and an edit program list display section 63 in which an audio program selected to be connected to one is displayed. Is provided. The audio programs displayed in the editing program list display portion 63 are highlighted, and the audio programs are displayed in the order of connection. In addition, the input program list display unit 62
A first movement operation button 64 for moving an audio program selected from the listed audio programs to the editing program list display section 63 is provided on the lower side of the editing program list display section 63. Is provided with a second move operation button 65 for moving the audio program to be edited to the input program list display portion 62. Further, on the display screen 61, an input unit 66 for inputting a file name for saving the edited audio programs, that is, the audio programs connected to one, and a process of connecting the selected audio programs to one are executed. And an execute button 67 are provided. Then, the input program list display section 62 displays a list of a plurality of audio programs input from the input section 11.

In step S12, the audio programs to be edited are selected from the audio programs listed in the input program list display portion 62 in the order in which they are connected. That is, first, the user operates the operation unit to select the first audio program after editing from the input program list display unit 62,
Then, when the first moving operation button 64 is clicked, the selected audio program is moved to the editing program list display portion 63 and is highlighted. Next, by the same operation, the second audio program,
The selected program is selected from the input program list display section 62 and moved to the edit program list display section 63. By repeating this, the editing program list display portion 63 displays the list in a state in which the order in which the selected audio programs are connected is specified. In the example shown in FIG. 9, the title is "XYZ" first, the title "DEF" second, the title "GHI" third, and the title "ABC" fourth. Then, the audio program of the list display unit 63 is output to the tempo information conversion unit 17, the tempo extraction unit 12, and the break position detection unit 13 or the break information extraction unit 18.

To cancel the selection of the selected audio program, that is, to return the audio program of the edit program list display section 63 to the input program list display section 62, select the audio program of the edit program list display section 63. Then, the second moving operation button 65 may be clicked.

In step S13, delimiter information is generated or extracted from the selected audio program, that is, the audio program of the editing program list display portion 63. When generating the delimiter information from the selected audio program, the delimiter position detection unit 13 uses the BPF 41 to input the delimiter information as shown in FIGS. 3 and 4.
The vocal component is extracted from the audio program input to the audio program, the envelope extraction unit 42 extracts the envelope of the vocal amplitude, and the level detection unit 43 separates the time when the amplitude is above the threshold value and the time when the amplitude is below the threshold value. The information is output to the information generator 14. Then, the delimiter information generation unit 14
Based on the data when the threshold value is less than or equal to the threshold value, which is input from the delimiter position detection unit 13, delimiter information that is a boundary between the vocal unit 52 and the interlude unit 53 is generated. Also,
The delimiter information generation unit 14 generates delimiter information serving as a boundary between the prelude part 51 or the interlude part 53 and the vocal part 52 based on the data input from the delimiter position detection part 13 at the time when the threshold value or more is reached, Output to the synthesis unit 19.
Further, when extracting delimiter information from the audio program shown in FIG. 5, the delimiter information extracting unit 18 extracts the delimiter information from the delimiter information recording unit 58.

At the same time, in step S14, a screen for designating the delimiter position of each selected audio program is displayed on the display section. For example,
As shown in FIG. 4, the delimiter information generation unit 1 is displayed on the screen.
4 and the partition information from the partition information extraction unit 18, a partition position, that is, a phrase boundary is displayed with an identifier such as an arrow for each audio program. Then, the user operates a mouse or the like that constitutes the operation unit to select two partition positions. As a result, a part of the audio program used when connecting the audio programs is selected. For example, when the identifier A and the identifier B are selected in the example of FIG. 4, the vocal unit 52 is used, and when the identifier A and the identifier C are selected, the vocal unit 5 is used.
2 and the interlude section 53 will be used. Then, the selected delimiter position is input as delimiter information from the delimiter information generating unit 14 and the delimiter information extracting unit 18 to the combining unit 19.

In step S15, tempo information is generated or extracted from the selected audio program, that is, the audio program of the editing program list display portion 63. When generating tempo information from the selected audio program, the tempo extraction unit 12
The signal component of the low-frequency rhythm instrument is extracted from the audio program in F31, the envelope of the amplitude of the low-frequency rhythm instrument is extracted by the envelope extraction unit 32, and the peak of the envelope of the amplitude of the low-frequency rhythm instrument is detected by the peak detection unit 33. Detect
From this, a rhythm pattern of the audio program corresponding to the time when the low-frequency rhythm musical instrument is struck is formed, and the rhythm pattern is normalized by the normalization processing unit 34 in the time axis direction. When extracting tempo information from the audio program shown in FIG. 5, the tempo extraction unit 12 extracts tempo information from the tempo information recording unit 57. Then, the tempo extraction unit 12 outputs the generated or extracted tempo information to the average value calculation unit 16.

In step S16, when the selected audio program is input from the input unit 11, the average value calculation unit 16 stores the tempo information of each of a plurality of audio programs connected to each other. , The average value is calculated, and the average value is output to the tempo information conversion unit 17. Tempo information conversion unit 1
7 replaces the tempo information of each of the selected audio programs with the average value calculated by the average value calculation unit 16. This allows each audio program to
It can be arranged without changing the tempo significantly.
Then, the tempo information conversion unit 17 outputs the converted audio program to the synthesis unit 19.

In step S17, the synthesizing unit 19
A plurality of audio programs whose tempo is the average value are input from the tempo information conversion unit 17, and the delimiter information from the delimiter information generation unit 14 or the delimiter information extraction unit 18 is input. Performs processing to connect the audio programs of. Specifically, as shown in FIG. 6, the delimiter position of the vocal section 52 and the interlude section 53 is designated in the audio program of the first music piece, and the vocal section 52 and the interlude section 53 of the second music piece are also specified. When the delimiter position is designated, the synthesizing unit 19 connects the vocal section 52 of the second song after the interlude section 53 of the first song, and the synthesizing section 19 inserts 3 vocals after the interlude section 53 of the second song.
A process of connecting the vocal parts 52 of the tune is performed. And
The synthesizing unit 19 outputs the audio program to the compressing unit 20 in order to record the synthesized audio program on the recording medium 21.

In step S18, the audio program synthesized by the synthesizer 19 is ATR-compressed by the compressor 20.
After being compressed by a method such as AC3, and then subjected to modulation processing such as EFM and error correction coding processing such as CIRC in the recording processing unit 22, the recording medium 21 is subjected to recording / reproducing means such as an optical pickup and a magnetic head. Will be recorded.

When reproducing an audio program in which a plurality of audio programs are connected together, a reproducing button such as a magnetic head is operated by the user to operate the reproducing button constituting the operation section from the recording medium 21. The specified audio program is read out, the reproduction processing section 23 performs demodulation, error correction decoding processing and the like on the read out data, and the decompression section 24 decompresses the compressed data and outputs it to the output section 25. Then, this data is converted from a digital signal to a sub-analog signal by a D / A converter, for example, and then output from an electroacoustic converter such as a speaker, an earphone, a headphone or the like.

According to the above-described editing method, when the audio programs to be connected are selected, the tempo of the audio program selected by the tempo extraction unit 12 is extracted, and the tempo is adjusted by calculating the average value. Also, since the audio programs are integrally connected in the specified order at the specified delimiter positions, it is possible to create audio programs with different tempos with a simple operation.
Can be connected to one. Such an audio program can be used as an accompaniment when dancing, for example, as dance music.

In the above example, the partition position which becomes the phrase boundary is detected by the presence or absence of vocals, but the partition position may be detected in combination with other frequency components. In addition, for example, in the case of a music without vocals, a component of a guitar or the like that plays the main melody may be extracted.

Although the pitch may be slightly shifted when the tempo is adjusted, the tempo information conversion section 17 may convert the tempo of the audio program to an average value and simultaneously correct the pitch.

Furthermore, in the above example, an example in which a plurality of audio programs are connected to one has been described, but the present invention may be video data as applicable content data. In this case, the presence or absence of correlation between frames and whether or not the amount of movement exceeds a threshold value may be detected, and this point may be set as the partition position.

By the way, the above-mentioned series of processes performed by the data editing apparatus 10 can be performed not only by hardware but also by software. When the series of processes is performed by software, a program forming the software is installed in a general-purpose personal computer, a one-chip microcomputer, or the like. FIG. 10 shows a configuration example of a computer in which a program that executes the series of processes described above is installed.

The program is stored in a hard disk 71 or a ROM (Rea) as a recording medium built in the computer.
It can be recorded in the d Only Memory) 72 in advance.
In addition, the program is a flexible magnetic disk, CD
-ROM (Compact Disc ReadOnly Memory), MO (Magneto
to optical) disc, DVD (Digital Versatile Dis)
c), it can be stored (recorded) in the removable recording medium 73 such as a magnetic disk or a semiconductor memory temporarily or permanently. Such a removable recording medium 73
Can be provided as so-called packaged software.

The program is installed in the computer from the removable recording medium 73 as described above, and is also wirelessly transferred from the download site to the computer via an artificial satellite for digital satellite broadcasting or LAN (Local Area). Network), via a network such as the Internet, and transferred to a computer by wire. In the computer, the program thus transferred can be received by the communication unit 74 and installed in the built-in hard disk 71.

The computer is a CPU (Central Process).
ing Unit) 75 is built in. An input / output interface 77 is connected to the CPU 75 via a bus 76. The CPU 75 allows the user to operate an input unit 78 including a keyboard and a mouse via the input / output interface 77. When a command is input by, the program stored in the ROM 72 is executed accordingly.

Alternatively, the CPU 75 uses the hard disk 71
Stored in the hard disk 71, the program transferred from the satellite or the network, received by the communication unit 74 and installed in the hard disk 71, or read from the removable recording medium 73 mounted in the drive 79 and installed in the hard disk 71. The loaded program is loaded into a RAM (Random Access Memory) 80 and executed.

As a result, the CPU 75 performs the process according to the above-mentioned flowchart or the process performed by the configuration of the above-mentioned block diagram. And the CPU 75
Outputs the processing result, for example, via the input / output interface 77 from the output unit 81 including a monitor, a speaker, or the like, or from the communication unit 74, and further records the processing result on the hard disk 71. Let

Here, the processing steps in which a program for causing a computer to perform various kinds of processing is not necessarily processed in time series in the order described as a flowchart, but are executed in parallel or individually. Processing (for example, parallel processing or processing by an object) is also included.

The program may be processed by one computer or may be processed by a plurality of computers in a distributed manner. Further, the program may be transferred to a remote computer and executed.

[0065]

According to the present invention, the reproduction speed of an input program is calculated, and a division position for dividing the program into predetermined units is generated, and the program, the reproduction speed, and the division position are grouped together. By performing recording processing on a recording medium by performing the editing process for integrally connecting a plurality of programs, it is possible to easily connect to one program by referring to the reproduction speed and the break position.

Further, according to the present invention, the average value of the reproduction speeds of the plurality of input programs is calculated, the reproduction speeds of the respective programs are converted into the above average values, and the respective input programs are set in a predetermined unit. By generating a delimiter position for division and synthesizing a plurality of programs whose reproduction speeds are converted into average values by the conversion means based on the delimiter position of each program into one program, programs having different reproduction speeds can be easily performed. Can be joined together.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating functions of a data editing device to which the present invention has been applied.

FIG. 2 is a block diagram illustrating a configuration of a tempo extraction unit.

FIG. 3 is a block diagram illustrating a configuration of a break position detecting unit.

FIG. 4 is a diagram illustrating a configuration of an audio program.

FIG. 5 is a diagram illustrating a format of data in which tempo information and partition information are added to an audio program.

FIG. 6 is a diagram illustrating an audio program in which audio programs having different tempos are connected.

FIG. 7 is a flowchart illustrating a procedure of extracting tempo information and delimiter information of an audio program from an audio program by using a data editing device and recording the tempo information and the delimiter information on the recording medium in a format as shown in FIG.

FIG. 8 is a flowchart illustrating an editing process for integrally connecting a plurality of audio programs.

FIG. 9 is a diagram illustrating an edit screen.

FIG. 10 is a block diagram illustrating a configuration of a computer.

[Explanation of symbols]

10 data editing device, 11 input unit, 12 tempo extracting unit, 13 break position detecting unit, 14 break information generating unit, 15 recording data generating unit, 16 average value calculating unit, 1
7 tempo conversion unit, 18 delimiter information extraction unit, 19 composition unit, 20 compression unit, 21 recording medium, 22 recording processing unit, 23 reproduction processing unit, 24 decompression unit, 25 output unit

Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 27/10 G10L 9/18 MF term (reference) 5D044 AB05 BC03 CC06 DE39 DE49 FG10 FG18 FG21 FG23 GK12 5D045 AA08 AB30 DB00 5D077 AA26 BA14 BA18 BA30 CA02 HD01 HD02 5D378 MM16 MM65

Claims (16)

[Claims] 1. A recording medium in which a plurality of programs reproducible by a data reproducing device are recorded, each program comprising a main body, a reproduction speed of the main body, and
A recording medium including a dividing position dividing the main body into predetermined units. 2. An input means for inputting a program, a calculating means for calculating a reproduction speed of the program input by the input means, and a delimiter position for dividing the program input by the input means into predetermined units. A data recording device comprising: a generation unit; and a recording unit that collectively records the program, the reproduction speed, and the delimiter position on a recording medium. 3. A reproduction speed of an input program is calculated, a delimiter position for delimiting this program into a predetermined unit is generated, and the program, the reproduction speed, and the delimiter position are collectively recorded on a recording medium. Data recording method. 4. An input unit for inputting a plurality of programs, a first extracting unit for extracting a reproduction speed of the program from each program input by the input unit, and an extracting unit for the first extracting unit. An average value calculating means for calculating an average value of the reproduction speeds of the plurality of programs, a conversion means for converting the reproduction speeds of the respective programs input by the input means into the average value, and an input by the input means. Second extraction means for extracting a division position for dividing each program into a predetermined unit, and a plurality of reproduction speeds converted into average values by the conversion means at the division positions of the programs extracted by the second extraction means. A data editing device comprising a synthesizing unit for synthesizing one program and synthesizing into one program. 5. The data editing apparatus according to claim 4, further comprising recording means for recording the one program synthesized by the synthesizing means on a recording medium. 6. A reproduction speed of the program is extracted from each input program, an average value of the reproduction speeds is calculated, the reproduction speed of each program is set to the average value, and each input program is predetermined. A data editing method in which a delimiter position for dividing into units is generated, and based on the delimiter position of each program, a plurality of programs whose reproduction speeds are averaged by the converting means are connected to one and combined into one program. 7. The data editing method according to claim 6, further comprising recording the one combined program in a recording medium. 8. A recording medium in which a plurality of audio programs reproducible by an audio program reproducing device are recorded, wherein each of the audio programs comprises a program body that constitutes audio data, and an audio that constitutes the program body. A recording medium including tempo information of data and a delimiter position that delimits the main body of the program into one or more phrases. 9. An input means for inputting an audio program, a calculating means for calculating tempo information of the audio program input by the input means, and an audio program input by the input means,
A data recording apparatus comprising: a generation unit that generates a delimiter position for delimiting one or a plurality of phrases; and a recording unit that collectively records the audio program, the tempo information, and the delimiter position on a recording medium. 10. Tempo information of an input audio program is calculated, and a delimiter position for delimiting this audio program for each one or a plurality of phrases is generated, and the audio program, the tempo information, and the delimiter position are generated. A data recording method for collectively recording on a recording medium. 11. Input means for inputting a plurality of audio programs, first extracting means for extracting the tempo of the audio programs from the respective audio programs input by the input means, and the first extracting means. An average value calculating means for calculating the average value of the tempo of the plurality of audio programs extracted by the above; a converting means for converting the tempo of each audio program input from the input means into the average value; and an input from the input means. The tempo is determined by the conversion means at the delimiter position of each audio program extracted by the first extraction means and the second extraction means, which delimits the demarcated position of each of the audio programs that have been delimited by one or a plurality of phrases. Connect multiple averaged audio programs into one Data editing apparatus and a combining means for combining the. 12. The data editing apparatus according to claim 11, further comprising recording means for recording one audio program synthesized by the synthesizing means on a recording medium. 13. The first extracting means extracts tempo information included in the audio program or the envelope of the audio program from the audio program input from the input means to extract peaks on a time axis. By detecting, the tempo is extracted, and the second extracting unit extracts the delimiter position information included in the audio program or the envelope of the audio program from the audio program input from the input unit. The data editing device according to claim 11, wherein the delimiter position is extracted depending on whether the value of the predetermined frequency on the time axis is above or below a threshold value. 14. The tempo of each audio program is extracted from each of a plurality of input audio programs, the average value of these tempos is calculated, and the tempo of each audio program is set to the above average value. A delimiter position for delimiting a program for each one or a plurality of phrases is extracted, and a plurality of audio programs whose tempo is averaged by the conversion means are connected to one at the extracted delimiter position of each audio program to obtain one audio program. Data editing method to be combined with the program. 15. The data editing method according to claim 14, further comprising recording the one synthesized audio program in a recording medium. 16. The tempo is extracted from the input audio program by extracting tempo information contained in the audio program or by extracting an envelope of the audio program and detecting a peak on the time axis, For the delimiter position, the delimiter position information included in the audio program is extracted from the input audio program or the envelope of the audio program is extracted, and the value of the predetermined frequency on the time axis is above or below the threshold value. 15. The data editing method according to claim 14, which is extracted depending on whether