JP2012128928A - Music reproduction apparatus, music reproduction method, music reproduction program, and recording medium storing music reproduction program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a music reproduction apparatus, a music reproduction method, a music reproduction program, and a recording medium storing the music reproduction program such that when a user performs arrangement operation during connection reproduction of a plurality of pieces of music, musical pieces are not changed as much as possible.SOLUTION: In a music reproduction device 1 which connects and successively reproduces a plurality of pieces of music, a control part 9 controls a decoding part 3 so that when arrangement operation is performed within a predetermined period before an out point of precedent music, the reproduction is carried out after being put back to a head of a reproduction block when advancing to the out point.

Description

  The present invention relates to a music playback device, a music playback method, a music playback program, and a recording medium storing a music playback program that can connect and play a plurality of music.

  For example, in the play of a disc jockey (DJ), when two music pieces are connected and played, one music piece is ended at an arbitrary point in the music piece, and then the next music piece is set to an arbitrary piece in the music piece. Playback is performed from a point (hereinafter also referred to as “connection playback”).

  In addition, in Patent Document 1, a command comment is attached to a beat guide file having a reproduction pitch and beat timing of music data for the purpose of enabling music data to be easily reproduced by anyone in the same manner as a DJ. In addition, there has been proposed a music playback device that connects the sound data file of the preceding music piece and the sound data file of the subsequent music piece according to the contents of the command comment to continuously play the preceding music piece and the subsequent music piece.

Japanese Patent No. 3799360

  In the above-described DJ play, not only two music pieces are connected and reproduced, but an arrangement operation for applying various effect processings within one music piece may be performed. Arrangement operation means that, for example, during music playback, the user can superimpose previously prepared sounds such as sampling sound and rhythm sound, or filter the music to cut only the low range, only the high range, or only the vocal This is an act of giving various arrangements to music by adding effects such as playing.

  However, in the case where a plurality of music pieces are connected and played (continuous play), if the user switches another music piece while performing an arranging operation on a certain piece of music, the user has to interrupt the arranging operation. There are problems such as feeling uncomfortable because it cannot be obtained, and feeling uncomfortable due to switching of music.

  Therefore, the present invention provides a music playback device, a music playback method, a music playback program, and a music playback program that can prevent the switching of music as much as possible when a user performs an arrangement operation during connection playback of a plurality of music. It is an object of the present invention to provide a recording medium storing a music reproduction program.

  In order to solve the above-described problem, the music playback device according to claim 1 is a playback unit that plays back music data, and a playback that indicates the music data and a playback start position and a playback end position of the music data for each music. The playback means for connecting the storage means for storing the section data and the playback end position of the preceding music to be played back earlier and the playback start position of the subsequent music to be played back later based on the playback section data And a control means for causing the music to be played back, and a music playback device for connecting and playing back a plurality of music, an effect means for adding an effect to the music being played back by the playback means, and an instruction to add the effect to the effect means Operation input means for inputting the operation, and the control means inputs the operation input within a predetermined period before the playback end position of the preceding music. If there is an input by the unit, the reproduction position of the preceding music than the playback end position is reproduced in the reproducing device returns to the previous position, and characterized in that.

  The music playback method according to claim 6, wherein for each song stored in advance, the preceding music to be played first based on the music data and the playback section data indicating the playback start position and playback end position of the music data. In a music playback method for playing a plurality of songs by connecting the playback end position of the following music and the playback start position of a subsequent music to be played later, within a predetermined period before the playback end position of the preceding music, When an instruction to add an effect to the music being played is input, the play position of the preceding music is returned to a position before the play end position and played.

  The music reproduction program according to claim 7 is a storage in which reproduction means for reproducing music data, and reproduction section data indicating the music data and the reproduction start position and reproduction end position of the music data for each music are stored. And a control means for causing the reproduction means to reproduce so as to connect the reproduction end position of the preceding music to be reproduced first and the reproduction start position of the subsequent music to be reproduced later based on the reproduction section data. In a music reproduction program for connecting a plurality of pieces of music by causing a computer to function, an effect means for adding an effect to the music being reproduced by the reproduction means, and an instruction for adding the effect to the effect means The operation means for operating the computer and the control means for reproducing the preceding music If there is an input by the operation input means within a predetermined period before the end position, the playback position of the preceding music is returned to a position before the playback end position and is played back by the playback means. It is a feature.

It is a block diagram of the music reproduction apparatus concerning one Example of this invention. It is explanatory drawing of operation | movement when arrangement operation of the music reproduction apparatus shown by FIG. 1 and switching of a music approach. It is explanatory drawing of the example which returns to the block head of explanatory drawing shown by FIG. It is explanatory drawing of the example which returns to the block with the similar feature-value of explanatory drawing shown by FIG. FIG. 5 is an explanatory diagram showing an example of correspondence where the feature amounts of similar blocks shown in FIG. 4 are at the same position. It is a flowchart of the loop determination process in case the arrangement operation of the music reproduction apparatus shown by FIG. 1 and the switch of a music approach. It is a flowchart of the reproduction | regeneration processing when the arrangement operation of the music reproduction apparatus shown by FIG. 1 and the switch of a music approach.

  Hereinafter, a music reproducing apparatus according to an embodiment of the present invention will be described. In the music reproducing device according to the embodiment of the present invention, when the control means receives an instruction to add an effect by the operation input means within a predetermined period before the reproduction end position of the preceding music, Since the playback position is returned to the position before the playback end position and played back, when the instruction to add the effect is input (when the arrangement operation is performed), the playback end position is approached within a predetermined period. If the music is connected at the playback end position, the music can be returned to the position before the playback end position. It is possible to enjoy the arrangement operation as much as the user desires without switching the switching as much as possible.

  The storage means further stores break position data indicating a predetermined block break for each piece of music, and the control means may return to the beginning of the block being played back based on the break position data. Good. By doing so, the delimiter data is stored in units of A melody, B melody, rust, etc., so that, for example, when an arrangement operation approaches the reproduction end position during A melody reproduction, it returns to the beginning of the A melody. Can continue to enjoy the arrangement operation up to the playback end position of the preceding music.

  In addition, the storage unit further stores feature amount data indicating the feature amount of the song in time series for each song, and the control unit determines whether the block is being reproduced based on the break position data and the feature amount data. It is also possible to return to the previous block and play back the block whose feature quantity is similar to the block being reproduced. By doing in this way, when returning from the block being played back, it returns to a similar part in the music, so that the uncomfortable feeling caused by returning can be reduced.

  In addition, the control unit may return the feature amount of a block whose feature amount is similar to that of the block being played back to the same position for playback. By doing so, for example, since the feature amount such as chord progression returns to the same position, it is possible to further reduce the uncomfortable feeling when returning from the block being reproduced.

  Further, the control means may reproduce the block being played back and the block to be played back by crossfading. By doing in this way, it is possible to connect smoothly when returning from the position being reproduced.

  In addition, the music playback method according to the embodiment of the present invention sets the playback position of the preceding music to the playback end position when an instruction to add an effect is input within a predetermined period before the playback end position of the preceding music. Since playback is resumed from the previous position, if an instruction to add an effect is input (when an arrangement operation is performed), if the playback end position is close to the specified time, playback ends. It is possible to return to the position before the playback end position without connecting the music at the position, and when the user performs an arranging operation during playback with multiple music connected, the music switching does not occur as much as possible. In this way, the user can enjoy the arranging operation as much as desired.

  In addition, the music playback program according to the embodiment of the present invention is configured so that the control unit receives the instruction to add an effect by the operation input unit within a predetermined period before the playback end position of the preceding music. Since the playback position of the music is returned to the position before the playback end position and played back, when an instruction to add an effect is input (when an arrangement operation is performed), the playback end position approaches within a predetermined period. If you have been playing, you can return to the position before the playback end position without connecting the music at the playback end position. Thus, the user can enjoy the arranging operation as much as possible without switching the music as much as possible.

  Further, the above-described music reproduction program may be stored in a computer-readable recording medium. In this way, the program can be distributed as a single unit in addition to being incorporated in the device, and version upgrades can be easily performed.

  An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the music reproducing device 1 according to an embodiment of the present invention includes a storage unit 2, a decoding unit 3, an effect unit 4, a fader unit 5, an adder 6, and a D / A. A converter 7, an output unit 8, a control unit 9, and an input unit 10 are provided.

  The storage unit 2 serving as a storage unit includes, for example, a storage medium such as an optical disk (optical disk drive), a hard disk (hard disk drive), or a memory card (memory card reader) and a reading device thereof, and music data to be reproduced on the storage medium. And playback section data that is data indicating a playback start position (in point) and playback end position (out point) for each music data, music bar data that is data indicating a bar break position for each music, Music block data, which is data indicating a block break specified by music analysis for each music, and music feature data, which is data indicating time-series feature values for each music, are stored.

  The music data is encoded and stored in advance by a predetermined method. The music block data block indicates a musical delimiter such as an intro, chorus, A melody, or B melody. The feature amount of the music feature amount data indicates, for example, keys, presence / absence of vocals, chord progression, volume level, etc., and the feature amount, the above-described bar break position and block break position are analyzed and detected by a well-known method. Has been.

  The decoding unit 3 as a reproduction unit includes a decoding unit A3a and a decoding unit B3b, and reads out the music data alternately from the storage unit 2 for each music, decodes (decodes), and outputs to the effect unit 4. For example, when the first music piece is read and decoded by the decoding unit A3a, the next second music piece is read and decoded by the decoding unit B3b, and then the third music piece is read and decoded by the decoding unit A3a. This means the operation.

  The effect unit 4 as an effect unit includes an effect unit A4a and an effect unit B4b, and adds the type of effect designated by the control unit 9 to the music input from the decoding unit 3. The effect unit A4a applies an effect to the output of the decoding unit A3a. The effect unit A4b applies an effect to the output of the decoding unit A3b. The effects added by the effect unit 4 include a process of superimposing preset rhythm sounds and sampling sounds on the music, a filtering process such as cutting only the high range, only the low range, and only the vocal, and the pitch and phase. For example, processing such as changing and adding a predetermined modulation, or matching the tempo of the preceding music and the succeeding music.

  The fader unit 5 includes a fader unit A5a and a fader unit B5b, and performs fade-in processing or fade-out processing on the music input from the effect unit 4. For example, when the music is switched from the output of the decoding unit A3a and the effect unit A4a to the output of the decoding unit b3b and the effect unit B4b, the crossfade process, that is, the fader part A5a performs the fadeout process, and the fader part B5b performs the fadein process. Apply.

  The adder 6 combines the music output from the fader unit A5a and the music output from the fader unit B5b and outputs the combined music to the D / A converter 7.

  The D / A converter 7 converts the music input from the adder 6 into an analog signal and outputs the analog signal to the output unit 8.

  The output unit 8 includes, for example, an amplifier and an output terminal, and amplifies the analog signal output from the D / A converter 7 and outputs it to the outside.

  The control unit 9 as a control means reads the music data to be reproduced from the storage unit 2 by controlling the decoding unit 3 based on the reproduction section data stored in the storage unit 2 and an operation input from the input unit 10 described later. It is made to play (decode), and an effect is added to the effect section 4. In addition, the fader unit 5 is controlled to connect the preceding music piece and the subsequent music piece based on the reproduction section data stored in the storage unit 2.

  The input unit 10 serving as an operation input unit includes, for example, a plurality of buttons and dials, and serves as an input unit for operating the music playback device 1. That is, the input unit 10 gives an instruction to add effect processing when the user performs an arrangement operation, or selects the type of effect.

  Next, in the music reproducing device 1 having the above-described configuration, an operation when an out point that is an arrangement operation and a music switching (connection) location approaches will be described with reference to FIGS.

  As shown in FIG. 2, the composition of a certain music is composed of blocks such as A melody, B melody, chorus 1, chorus 2, A melody, and an out point OP is set behind chorus 2. If an arrangement effect process (arrangement operation) is performed at a time point within a predetermined period (for example, a predetermined bar) before the out point OP, the block is the relevant block from the point of time of playback up to the out point of that block. Play back to the top of chorus 2. That is, after the reproduction of the A melody and the B melody in FIG. 2, the melody 1, the rust 2, and the rust 2 are reproduced as shown in FIG. That is, when playing to the out point, the playback position of the preceding music is returned to the position before the out point and played. Processing for performing playback by returning the playback position to a position before the out point is also referred to as loop processing in the following description.

  Further, as another loop process, the current reproduction position and the feature amount in a block having a similar feature amount before the block being reproduced may be returned to the same position. An example thereof will be described with reference to FIG. As shown in FIG. 4, when returning from a certain playback position behind the chorus 2, the chorus 1 has a similar feature quantity (chord progression etc.) to the same feature quantity (chord progression etc.). Play back. That is, after the reproduction of the A melody and the B melody in FIG. 2, as shown in FIG. 4, the reproduction is performed with the rust 1, rust 2, rust 2 and the cross fade and rust 2 behind the rust 1. In this way, by returning to the same feature amount portion of the similar block, the uncomfortable feeling when returning is reduced. In addition, as shown in FIG. 4, a smooth connection can be achieved by crossfading.

  FIG. 5 is an explanatory diagram showing an example of correspondence of the timing at which the chorus 1 and the chorus 2 can be synchronized (positions with the same feature amount). In the case of FIG. 5, the crossfade 1 corresponding to the rust 2 corresponds to the crossfade 1 that is the timing at which the rust 1 can be synchronized, and similarly corresponds to the crossfade N (N = 2 to 4) of the rust 2. This is a crossfade N that is the timing at which the chorus 1 can be synchronized. In FIG. 5, the synchronization timing is almost the same time position from the beginning of the block, but is not necessarily the same time position because it is determined with reference to a feature amount such as chord progression.

  Next, the above description will be described in detail with reference to the flowcharts of FIGS. These flowcharts are executed by the control unit 10. The flowchart shown in FIG. 6 is a flowchart regarding the loop determination process.

  First, in step S11, the flag is initialized to 0, and the process proceeds to step S12. As will be described later, this flag indicates that loop processing is necessary.

  Next, in step S12, it is determined whether or not there is an arrangement operation based on an input from the input unit 10. If there is an arrangement operation (Y), the process proceeds to step S13, and if there is no arrangement operation (N If), wait at this step.

  Next, in step S13, it is determined whether or not the current reproduction position is within a predetermined period before the out point. If it is within the predetermined period (in the case of Y), the process proceeds to step S14 and is not within the predetermined period. In the case (N), the process returns to step S12. In this step, it is determined whether or not the out point is approaching. The out point and the arrangement effect process are spaced by a predetermined period, so that when the user wants to perform a plurality of arrangement operations in succession, there is a grace period for accepting the next arrangement operation. This step also determines whether it is before the grace period. This predetermined period is set, for example, in units of measures (such as two measures). Arrangement operations include one in which the effect process ends at the same time as the operation of the input unit 10 and the other in which the effect process ends after a certain period of time has elapsed from the end of the operation of the input unit 10. It depends on. For example, if the grace period is to be freed by two measures, the effect processing may be completed for two bars for a predetermined period when the effect processing ends at the end of the operation of the input unit 10, but the effect processing is performed after one measure has elapsed since the end of the operation of the input unit 10. What ends is a three-measure period. Of course, the predetermined period may be a period immediately before the out-point without grace for accepting the next arrangement operation, but in that case, it becomes impossible to cope with the continuous arrangement operations as described above. It is not preferable.

  Next, in step S14, 1 is set in the flag, and the process returns to step S12. This flag indicates that a loop is required. That is, it is a flag indicating that the loop operation is performed without switching to the succeeding music piece because the arrangement operation is performed even when approaching within a predetermined period from the out point, and is used in the flowchart shown in FIG.

  Next, a flowchart regarding the reproduction processing shown in FIG. 7 will be described. This flowchart is executed by the control unit 10.

  First, in step S21, it is determined whether or not it is an out point. If it is an out point (in the case of Y), the process proceeds to step S22. If it is not out point (in the case of N), the process waits in this step.

  Next, in step S22, it is determined whether or not the flag is 1. If 1 (Y), the process proceeds to step S23. If not 1 (N), the process proceeds to step S25. That is, it is determined whether loop processing is necessary.

  Next, in step S23, a loop process is performed to return the reproduction position to the previous position, and the process proceeds to step S24. The loop process of the flowchart shown in FIG. 7 is a process of returning to the beginning of the block being reproduced shown in FIG. 3, but may be a process of returning to a similar block shown in FIG. Whether to return to the beginning of a block or to return to a similar block may be arbitrarily selected.

  Next, in step S24, the flag is set to 0 and the process is terminated. That is, the flag is initialized because one loop process is completed.

  On the other hand, in step S25, the MIX effect process is performed and the process ends. This MIX effect process is a process of connecting and playing the out point of the preceding music and the in point of the following music. Also, not only crossfading and connecting the preceding music and the following music, but also connecting the subsequent music such as matching the tempo of the preceding music and the following music, or cutting the male vocal when switching from male vocal to female vocal. The effect processing for improving the performance is also performed at the same time. In this step, since the flag is not 1, connection with the subsequent music piece by the MIX effect process is performed at the set out point without the need for the loop process.

  According to the present embodiment, if there is an arrangement operation within a predetermined period before the out point of the preceding music, the arrangement operation is performed by returning to the beginning of the corresponding playback block when playing up to the out point. When the out point has approached within a predetermined period when the operation is performed, it is possible to return to the top of the block when the out point is reproduced. For example, when the arrangement operation approaches the out point during the reproduction of the A melody, it is possible to return to the beginning of the A melody at the out point and continue to enjoy the arrangement operation up to the out point. By doing in this way, when a user is performing an arrangement operation during playback by connecting a plurality of music pieces, it is possible to enjoy the arrangement operation as much as the user desires without switching the music pieces as much as possible.

  Further, based on the music block data and the music feature value data stored in the storage unit 2, a current playback of a block preceding the block being played and having a similar feature value to the block being played back Since the position and the feature amount may be returned to the same position and played back, when returning from the block being played back, it returns to a similar part in the music, so that the uncomfortable feeling caused by returning can be reduced.

  Also, since the block being played back and the block to be played back may be crossfade and played back, smooth connection can be made when returning from the position being played back.

  In the above-described embodiment, as shown in FIG. 4 and FIG. 5, the feature amount returns to the same position as the current playback position of the block whose feature amount is similar to that of the block being reproduced. You may return to the beginning of a similar block. Further, the block having the similar feature amount is not limited to the block immediately before the block being reproduced, and may be returned to the preceding block. For example, when returning from the rightmost A melody in FIG. 2, the leftmost A melody may be returned. For example, by setting the return time in advance as 8 bars or 10 seconds, the return position may return to a similar block existing more than that time.

  In the above-described embodiment, the unit is returned in units of blocks, but may be returned in units of measures or beats. In this case, the return time may be set in advance. Of course, the return time may be set in seconds, minutes, etc., but the block, measure, and beat unit are preferred in terms of the connectivity of the music when it returns.

  Further, by configuring the storage unit 2, the decoding unit 3, the effect unit 4, the fader unit 5, the adder 6, the control unit 9, the input unit 10, and the like as a program that operates on a computer, the present invention can be used as a music reproduction program. Can be configured.

  According to the embodiment described above, the following music playback device 1, music playback method, and music playback program can be obtained.

(Supplementary note 1) Based on the decoding section 3 that reproduces the music data, the storage section 2 that stores the music data for each music and the reproduction section data indicating the in-point and out-point of the music data, and the reproduction section data And a control unit 9 that causes the decoding unit 3 to play back so as to connect an out point of a preceding music to be played first and an in point of a subsequent music to be played later, and a music to be played by connecting a plurality of music In the playback device 1,
An effect unit 4 for adding effects to the music being played by the decoding unit 3;
An input unit 10 for inputting an instruction to add an effect to the effect unit 4;
When the control unit 9 receives an input from the input unit 10 within a predetermined period before the out point of the preceding music, the control unit 9 returns the playback position of the preceding music to a position before the out point and plays it back to the decoding unit 3. A music reproducing apparatus 1 characterized by being made to perform.

(Supplementary note 2) Based on the music data and the reproduction section data indicating the in-point and out-point of the music data for each music stored in advance, the out-point of the preceding music to be reproduced first and the subsequent music to be reproduced later In a music playback method for playing multiple songs by connecting In Point,
If there is an instruction to add an effect to the song being played within a predetermined period before the out point of the preceding song, the playback position of the preceding song is returned to the position before the out point and played back. Characteristic music playback method.

(Additional remark 3) Based on the decoding part 3 which reproduces | regenerates music data, the memory | storage part 2 in which the reproduction | regeneration area data which shows music data and the in-point and out point of the said music data are memorize | stored for every music, and reproduction | regeneration area data Then, the control unit 9 causes the decoding unit 3 to play back so as to connect the out point of the preceding music to be played first and the in point of the subsequent music to be played later, and connect the plurality of music by causing the computer to function. In the music playback device 1 that plays back
The decoding unit 3 functions as an effect unit 4 that adds effects to the music being played, and allows the computer to function.
An input unit 10 for inputting an instruction to add an effect to the effect unit 4;
When the control unit 9 receives an input from the input unit 10 within a predetermined period before the out point of the preceding music, the control unit 9 returns the playback position of the preceding music to a position before the out point and plays it back to the decoding unit 3. The music reproduction program characterized by letting you do.

  According to the music playback device 1, the music playback method, and the music playback program, when an instruction to add an effect is input (when an arrangement operation is performed), the out point is approaching within a predetermined period. Can return to the previous point without connecting music at the out point, and when the user performs an arrangement operation during playback with multiple music connected, the switching of the music does not occur as much as possible. In this way, the user can enjoy the arranging operation as much as desired.

  In addition, the Example mentioned above only showed the typical form of this invention, and this invention is not limited to an Example. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Music reproducing apparatus 2 Storage part (storage means)
3 Decoding unit (reproduction means)
4 Effect section (effect means)
9 Control unit (control means)
10 Input section (operation input means)

Claims (8)

Based on reproduction means for reproducing music data, storage means for storing the music data for each music piece and reproduction section data indicating the reproduction start position and reproduction end position of the music data, and the reproduction section data, Control means for causing the reproduction means to reproduce so as to connect the reproduction end position of the preceding music to be reproduced first and the reproduction start position of the subsequent music to be reproduced later, and to connect and reproduce a plurality of music In the music playback device,
Effect means for adding an effect to the music being played by the playing means;
Operation input means for inputting an instruction to add the effect to the effect means,
When there is an input from the operation input means within a predetermined period before the playback end position of the preceding music, the control means sets the playback position of the preceding music to a position before the playback end position. Return to the playback means to play back,
A music reproducing apparatus characterized by the above. The storage means further stores delimiter position data indicating a delimiter of a predetermined block for each song.
2. The music reproducing apparatus according to claim 1, wherein the control means returns to the beginning of the block being reproduced based on the break position data. The storage means further stores, for each piece of music, feature quantity data indicating the feature quantity of the music in time series,
The control means, based on the delimiter position data and the feature amount data, is played back by returning to a block before the block being reproduced and having a similar feature amount to the block being reproduced, The music reproducing apparatus according to claim 2, wherein:   4. The music reproducing apparatus according to claim 3, wherein the control means plays back the feature amount of a block whose feature amount is similar to the block being played back to the same position.   5. The music reproducing apparatus according to claim 2, wherein the control unit reproduces the block being played back and the block to be played back by crossfading. 5. Based on the music data and the reproduction section data indicating the reproduction start position and the reproduction end position of the music data for each music stored in advance, the reproduction end position of the preceding music to be reproduced first and the subsequent music to be reproduced later In a music playback method for playing back a plurality of music by connecting to the playback start position of
If an instruction to add an effect to the music being played is input within a predetermined period before the playback end position of the preceding music, the playback position of the preceding music is set to a position before the playback end position. A music playback method characterized by returning to and playing back. Based on reproduction means for reproducing music data, storage means for storing the music data for each music piece and reproduction section data indicating the reproduction start position and reproduction end position of the music data, and the reproduction section data, A control unit that causes the playback unit to play back so as to connect the playback end position of the preceding music to be played first and the playback start position of the subsequent music to be played later, and connect a plurality of music by causing the computer to function. In the music playback program that plays
Effect means for adding an effect to the music being played by the playing means;
As an operation input means for inputting an instruction to add the effect to the effect means, the computer is caused to function,
When there is an input from the operation input means within a predetermined period before the playback end position of the preceding music, the control means sets the playback position of the preceding music to a position before the playback end position. Return to the playback means to play back,
A music playback program characterized by the above.   A computer-readable recording medium storing the music reproduction program according to claim 7.

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