JP2008250016A - Device for reproducing musical performance data, data structure of musical performance data and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem: "measure line data" indicative of delimitations of measures in terms of musical grammar are sometimes included in musical performance data so as to display or print the musical performance data in musical score form, and the position of the "measure line data" however slightly shifts in timing from measure line positions calculated from a tempo etc., so as to avoid events associated with "beforebeat" and "afterbeat" playing styles and when some or a plurality of measures of the musical performance data are specified and loop-reproduced as background music of a game etc., the game and music gradually shift in timing. <P>SOLUTION: Differences Δts between effective measure line positions (event time parts 42-ka of respective measure line data) and calculated measure line positions are recorded in the measure line data (measure line data 42-1, 42-6, 42-15, etc.). When the musical performance data are loop-reproduced based upon measures as units, a loop section is determined based upon intervals of the calculated measure line positions. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a performance data reproducing apparatus, a performance data structure, and a program suitable for use in reproducing performance data in a loop in synchronization with an image or the like.

  Japanese Patent Application Laid-Open No. 2004-151561 discloses a technique for including “bar line data”, which is a measure delimiter, in performance data so that the performance data can be displayed or printed in the form of a score. Here, as a method for determining the position of the bar line data within the time axis of the performance data, a method of simply determining based on the tempo and the time signature can be considered. For example, in a song with a tempo of “120” and a “4/4 time signature”, the bar length of “1” is “2 seconds”, so the bar line position is changed every 2 seconds from the performance start timing. It is also possible to determine

  However, the actual performance is not always performed at an accurate timing. For example, “previous” playing at a timing earlier than the timing on the score or “rear past” playing at a timing later than the timing on the score. , Etc. are appropriately adopted. If the bar line position is simply determined every predetermined time, the bar line is displayed at an inappropriate position on the score. Therefore, Patent Document 2 discloses a technique for automatically determining an appropriate bar line position while analyzing performance data. Further, when the automatically determined bar line position is inappropriate, the bar line position can be appropriately corrected by manual operation of the creator of the performance data. In any case, the bar line position determined in this way is slightly deviated from the timing calculated in the calculation based on the tempo and time signature, and the above example (tempo “120”, “4/4”). In “time signature”), the length of each measure may not be exactly “2 seconds”.

  Further, in Patent Document 3, while playing performance data, a screen synchronized with the performance data is displayed on the display, and when the user presses a button at the right timing according to the played performance data and the screen, the user is prompted. A technique relating to a game in which scores are added is disclosed.

JP-A-9-16169 JP 7-129158 A JP 2002-229574 A

By the way, the performance data is not only reproduced alone, but only a part of the performance data may be reproduced in a loop as background music such as an animation or a game. Here, it is assumed that the performance data has a tempo of “120” and “4/4 time signature”, animations and the like are displayed in synchronization therewith, and one or more bars in the performance data are looped. Since the length of each measure of the performance data does not accurately become “2 seconds” during playback, errors gradually accumulate, and there is a “lag” between the display timing of the animation or game and the playback timing of the performance data. "Comes to occur.
The present invention has been made in view of the above-described circumstances, and even if there is a previous note at the beginning of the loop section, the performance data is reliably loop-reproduced at an accurate cycle corresponding to the tempo without missing it. An object of the present invention is to provide a performance data reproducing apparatus, a data structure of performance data, and a program.

In order to solve the above problems, the present invention is characterized by having the following configuration. The parentheses are examples.
In the performance data reproducing apparatus according to claim 1, note event data for instructing the sound generation and mute is recorded, (a) an effective bar line position which is an uneven bar line position, and (b) a music piece. On the basis of performance data that can specify an equivalent calculated bar line position calculated based on the tempo and time signature, a loop section, which is a section that is repeatedly reproduced, is determined from the performance data. A performance data reproducing apparatus for performing loop reproduction, when receiving a designation of a loop start measure (A) and a loop end measure (B), a first effective measure line position relating to a start timing of the loop start measure (A) And the second calculated bar line position (teb) corresponding to the second effective bar line position corresponding to the end timing of the loop end bar (B). Recognized calculations Upper bar line position recognition means (SP4, SP10) and a loop section having an interval equal to an interval from the first calculated upper bar line position (tsa) to the second calculated upper bar line position (teb). And the playback start timing (t0) at the same time as the first note-on event occurring after the first effective bar line position or before the note-on event, and finally ending before the second effective bar line position Loop section determining means (SP8, SP14) for determining a loop section having a reproduction end timing (tend) at the same time as or after the note-off event.
Furthermore, in the configuration according to claim 2, in the performance data reproducing device according to claim 1, the performance data includes bar line data which is event data for designating the effective bar line position, Each bar line data has an event timing (event time part 42-ka) of the bar line data and a difference (Δts) between the event timing and a calculated bar line position corresponding to the event timing.
Furthermore, in the configuration according to claim 3, in the performance data reproducing device according to claim 1 or 2, time data (t) in a range from the reproduction start timing (t0) to the reproduction end timing (tend). Time data generating means (SP16, SP30, clock circuit 5) for repeatedly looping, and note event data whose event timing matches the time data (t) among the note event data, the note event data is the loop interval And reproducing means (SP19, SP28) for reproducing on the condition of belonging to
The performance data reproducing apparatus according to claim 4, wherein the performance data includes bar line data for specifying an effective bar line position, which is an unequal bar line position, and note event data for specifying sound generation or muting. Data, a reproduction start timing (t0) of a loop section defined on the time axis applied to the performance data, a reproduction end timing (tend) of the loop section defined on the time axis, and the loop A loop playback method for loop-playing the performance data based on one or a plurality of loop target bars to be played back in a section and loop target bars separated by the effective bar line position, wherein the playback start timing ( time data generating means (SP16, S) for repeatedly looping time data (t) in a section between t0) and the reproduction end timing (tend). 30 and a clock circuit 5) and reproduction means for reproducing the note event data whose event timing matches the time data (t) in the note event data on condition that the note event data belongs to the loop target measure. (SP19, SP28).
6. The performance data reproducing apparatus according to claim 5, wherein music data is reproduced, and contents of event data included in the performance data are displayed on a display device in accordance with the performance data corresponding to the music data. The performance data includes bar line data that specifies an effective bar line position that is an unequal bar line position, and the display unit displays a section divided by the effective bar line position as an update unit. It has the update means (SP58) which updates the content, It is characterized by the above-mentioned.
The data structure of performance data according to claim 6 is a data structure of performance data including bar line data for designating an effective bar line position which is an unequal bar line position. That the calculated bar line position calculated in the calculation based on the tempo and time signature of the music or the difference (Δts) between the effective bar line position specified in the bar line data and the calculated bar line position is recorded. Features.
Further, in the program according to claim 7, (a) an effective bar line position which is an unequal bar line position, and (b) a calculated bar line position which is calculated based on the tempo and time signature of the music. Is a program for determining a loop section, which is a section to be repeatedly reproduced in the performance data, using the processing device (6) based on the performance data that can specify the loop start measure (A) and the loop end. When the designation of the bar (B) is received, the first calculated bar line position (tsa) corresponding to the first effective bar line position related to the start timing of the loop start bar (A) and the loop end bar ( B) a calculation bar position recognition process (SP4, SP10) for recognizing a second calculation bar position (teb) corresponding to the second effective bar position corresponding to the end timing of B), Calculated bar line position (tsa) A loop section having an interval equal to the interval up to the second calculated bar line position (teb), and at the same time as or before the note-on event that occurs first after the first effective bar line position A loop section having a reproduction start timing (t0) and having a reproduction end timing (tend) at the same time as or after the note-off event last ended before the second effective bar line position is determined. The processing section (6) is caused to execute a loop section determination process (SP8, SP14).
Further, in the program according to claim 8, performance data including bar line data for specifying an effective bar line position which is an unequal bar line position and note event data for specifying sound generation or muting, Playback start timing (t0) of the loop section defined on the time axis applied to the performance data, playback end timing (tend) of the loop section defined on the time axis, and playback of the loop section A program for loop-reproducing the performance data using a processing device (6) based on one or a plurality of loop target bars to be processed and a loop target bar delimited by the effective bar line position, Time data generation process in which time data (t) is repeatedly looped in a section between the reproduction start timing (t0) and the reproduction end timing (tend) ( P16, SP30) and a reproduction process (SP19) of reproducing the note event data whose event timing matches the time data (t) in the note event data on condition that the note event data belongs to the loop target measure. , SP28) are executed by the processing device (6).
According to a ninth aspect of the present invention, the music data is reproduced, and the performance data corresponding to the music data includes bar line data for designating an effective bar line position that is an uneven bar line position. A program for displaying the contents of event data included in performance data on the display device (2) using the processing device (6), wherein the display unit displays the interval delimited by the effective bar line position as an update unit. An update process (SP58) for updating the contents is executed by the processing device (6).

  Thus, according to the present invention, a loop section having an interval equal to the interval between the first and second calculated bar line positions can be determined regardless of the effective bar line position. Even if there is a note, it is possible to reliably reproduce the performance data in a loop with an accurate cycle corresponding to the tempo.

1． Configuration of Embodiment Next, the configuration of a music player according to an embodiment of the present invention will be described with reference to FIG. In the music player 1, 2 is an LCD (Liquid Crystal Display), and 4 is an LCD interface for controlling the LCD 2. A CPU 6 controls each unit via the system bus 10 based on a program stored in the ROM 14. Reference numeral 5 denotes a clock circuit that outputs time data t serving as a reference timing for reproduction of music data and causes the CPU 6 to generate a timer interrupt. A tone reproduction unit 20 generates a digital audio signal (musical sound signal) based on performance data, and a decoder 24 that converts compressed audio data such as AAC format or MP3 format into an uncompressed digital audio signal. And a DSP (Digital Signal Processor) 26 for applying an effect to the digital audio signal output from the sound source unit 22 or the decoder 24. A DA converter 8 converts the digital audio signal output from the musical sound reproducing unit 20 into an analog audio signal. The converted analog audio signal is sounded through the sound system 9. A RAM 12 is used as a work memory for the CPU 6. The RAM 12 is a non-volatile RAM, and music data described later is also stored in the RAM 12. Reference numeral 16 denotes a communication module, which performs processing such as downloading music data with an external device. Reference numeral 18 denotes an operation unit, which includes various buttons operated by the user.

  Next, the configuration of the operation panel of the music player of this embodiment will be described with reference to FIG. In FIG. 3, reference numerals 81 and 82 denote game buttons. A menu button 83 is provided to display various menus on the LCD 2. 84 and 85 are music selection buttons for selecting music data to be reproduced in the music player. Reference numeral 86 denotes a play / stop button for instructing to play and stop music data. In this music player, by operating the menu button 83 or the like, one of the “playback mode” for simply playing music data or the “game mode” for playing a game using the music data is selected. be able to. The display screen of the LCD 2 shown in FIG. 3 shows a display example when operating in the game mode. In this display screen, reference numerals 112 and 114 denote bar lines, which indicate the breaks of the bars of the music data being reproduced. Reference numerals 91 to 94 denote upper operation instruction marks, which represent the timing at which the user should press the upper button 81. Similarly, 101 to 106 are lower operation instruction marks, which represent the timing at which the user should press the lower button 82. Reference numeral 110 denotes a playback position cursor, which represents the current playback position of music data. Then, as shown in the figure, the operation instruction marks 91 to 94 and 101 to 106 for “2” bars are displayed on the LCD 2 within the range from the bar line 112 to the right end portion 116 of the screen.

  Although details will be described later, data specifying the display positions of these operation instruction marks 91 to 94 and 101 to 106 is referred to as game control data. In FIG. 3, “2” bars of the game control data, for example, a first bar and a second bar are displayed. The playback position cursor 110 displays the current playback position by moving rightward from the position of the bar line 112 at the left end. When the playback position cursor 110 reaches the position of the bar line 114, the display of the first bar between the bar line 112 and the bar line 114 is deleted, and the third bar is displayed at that position instead. When the playback position cursor 110 reaches the right end, the second bar from the bar line 114 to the right end is deleted, the fourth bar is displayed instead, and the playback position cursor 110 is displayed at the left end (the third bar). To the beginning) and continue moving to the right. By repeating such an operation, the display screen of the LCD 2 shows the current reproduction position to the user while switching the display of the game control data. Here, it is an object of the game to accurately press the corresponding side of the buttons 81 and 82 at the timing when the playback position cursor 110 reaches the positions of the operation instruction marks 91 to 94 and 101 to 106. Reference numeral 120 denotes a score column, which displays the score that the user is currently acquiring.

2． Example data structure
2.1. Music Data Next, various data used in this embodiment will be described. The music player of this embodiment outputs audio signals by reproducing music data, and there are two types of music data, “compressed audio data” and “performance data”. “Compressed audio data” is data in the AAC format or MP3 format, for example, and is data obtained by compressing uncompressed PCM data obtained by sampling an analog signal by a predetermined method. “Performance data” is composed of events such as note-on and note-off, and data defining the timing of these events. Here, a music data reproduction algorithm in the musical sound reproduction unit 20 will be described with reference to FIG. In FIG. 2, compressed audio data 30 and performance data 32 are stored in the RAM 12. The compressed audio data 30 and the performance data 32 are supplied to the decoder 24 and the sound source unit 22, respectively, so that uncompressed PCM data corresponding to them is output from the decoder 24 and the sound source unit 22.

  Reference numerals 26a and 26b denote effect applying units, which perform effect processing on the PCM data. The audio signals that have been subjected to the effect processing are added by the adding unit 26 c and output to the DA converter 8. The effect imparting units 26a and 26b and the adding unit 26c are realized by a microprogram executed in the DSP 26. When the music data is performance data, the performance data includes a bar line event. This is not particularly used when generating a musical sound, but is used for designating a loop section when looping performance data. The event time of this bar line event corresponds to the bar line position on the music.

  Here, the structure of performance data, which is music data, will be described with reference to FIG. In FIG. 4, reference numeral 40 denotes a header portion, which stores text data such as a song title and artist name. Reference numeral 42 denotes an event data section, which is composed of a plurality of event data 42-1 to 42-n. Here, each event data 42-k (k = 1 to n) includes an event time part 42-ka and an event part 42-kb. In FIG. 4, only the event data 42-1 is labeled with the event time part 42-1a and the event part 42-1b. The event time part 42-ka represents the event time, which is the timing at which the event part 42-kb is to be executed, in units of milliseconds on the time axis based on the reproduction start timing of the performance data. The event section 42-kb designates a note-on event for designating the tone of a musical tone, a note-off event for designating the muting of a musical tone, the above-described bar line event, and the like.

  Here, the bar line position represented by the bar line event included in the music data, that is, the bar line position set to the correct position on the music is referred to as an “effective bar line position”. In addition, a bar line position calculated in accordance with the target tempo and time signature may be considered. For example, in the game control data created for the tempo “120” and “4/4 time signature”, it can be considered that the bar line positions exist at intervals of “2000 msec” in the calculation. A bar line position calculated in this way based on the tempo, time signature, and the like is referred to as a “calculated bar line position”.

  Since the effective bar line position is set to the correct position in the music while avoiding the event timing of the front and rear paths, the event time part 42-ka of the bar line event is calculated forward and backward from the bar line position in the calculation. There may be deviation. The bar line data event part 42-kb includes an identification ID part 42-kc indicating the identification ID of the bar line data, a bar number part 42-kd indicating the bar number of the bar corresponding to the bar line data, It comprises a difference display section 42-ke indicating a difference Δts between the event timing (effective bar line position) of the bar line data and the corresponding calculated bar line position. Here, the relationship between the bar number part 42-kd and the bar on the music is shown in FIG. As shown in the figure, each bar is given an ascending bar number starting from “1”, and the “bar number” recorded in the bar number part 42-kd of each bar line data is the bar line data. This is the measure number of the measure that starts immediately after.

2.2. Game Control Data The game control data is used to display operation instruction marks 91 to 94, 101 to 106 and bar lines 112 and 114 on the LCD 2 and to determine whether or not the buttons 81 and 82 have been appropriately operated. . The game control data is not data that directly designates “pronunciation” or “effect”, but is stored in the RAM 12 in the same format as the performance data that is music data. That is, in the game control data, which of the buttons 81 and 82 should be pressed is represented by the type of “note on event”. The timing to be pressed is represented by the timing of these note-on events.

  However, the bar lines 112 and 114 displayed on the LCD 2 are displayed based on “calculated bar line position”. Therefore, for example, when there is a previous note-on event in a bar, the operation instruction mark corresponding to the note-on event is displayed at a position before the bar lines 112 and 114 related to the bar. Become. As a result, it is possible to reliably display the event data of the front and rear paths while keeping the moving speed of the reproduction position cursor 110 on the LCD 2 constant. Note that the tolerance error ΔT is stored in the header 40 of the game control data. Here, the allowable error ΔT is a range of errors that the actual pressing timing of the buttons 81 and 82 can take with respect to the pressing timing (note-on event timing) designated by the game control data. If there is, the pressing timing is determined to be “appropriate”.

3． Next, the operation of this embodiment will be described. This operation is executed under the control of the CPU 6. First, the user selects game control data and music data that is the background music of the game, and further, loop start measure number A, which is the first measure number to be loop-reproduced in the game control data and music data, and the last measure. Assume that a loop end measure number B, which is a number, and a loop count LCmax are designated. If there is only one measure for loop playback, the same value is specified as the measure numbers A and B. When the user performs a predetermined reproduction start operation after the designation is completed, the main routine shown in FIGS. 5 and 6 is started.

  When the process proceeds to step SP2 in FIG. 5, measure line data having loop start measure number A is searched from the designated music data. Next, when the process proceeds to step SP4, the calculated bar corresponding to the bar line data is based on the event time part 42-ka of the bar line data and the difference Δts included in the difference display part 42-ke. The line position tsa is calculated. Next, when the process proceeds to step SP6, the last note-off event timings in all the bars from the bar number A to the bar number B are retrieved and stored in the RAM 12. Next, when the process proceeds to step SP8, the last note-off event timing is retrieved from the note-off event timings existing in the measure with the measure number B. The retrieved timing is set as the reproduction end timing tend of the loop section.

  Next, when the process proceeds to step SP10, bar line data of the bar number (B + 1) is retrieved, and the corresponding action is performed based on the event time part 42-ka and the difference display part 42-ke of the bar line data. In calculation, the bar line position teb is calculated. Next, when the process proceeds to step SP12, a value obtained by subtracting the reproduction end timing tend from the calculated bar line position teb is calculated as the end difference Δt. Next, when the process proceeds to step SP14, the end difference Δt is subtracted from the calculated bar line position tsa, and the value is obtained as the reproduction start timing t0.

  Here, a specific example of the processing of steps SP2 to SP14 will be described using the performance data shown in FIG. First, it is assumed that illustrated bar line data 42-6 is retrieved as bar line data related to bar number A in the music data. Since the event time portion 42-6a is “1980 msec” and the difference Δts is “20 msec”, the bar line position tsa in the calculation of the bar number A is “2000 msec”. If the same value as the loop start measure number A is designated as the loop end measure number B, the measure line data 42-6 is retrieved again as the measure line data related to the measure number B. Here, the last note-off event in the section from the bar line data 42-6 to the next bar line data 42-15 appears is specified in the event data 42-14. Since this event timing is set to the reproduction end timing tend, the reproduction end timing tend is “3690 msec”.

  Next, bar line data relating to bar number (B + 1) is bar line data 42-15. Since the event time part 42-15a is “3975 msec” and the difference Δts is “25 msec”, the bar line position teb in the calculation of the bar number (B + 1) is “4000 msec”. Accordingly, the terminal difference Δt (= teb−tend) is “310 msec”, and the reproduction start timing t0 (= tsa−Δt) is “1690 msec”. By the above calculation, the difference between the reproduction start timing t0 and the reproduction end timing tend is accurately “2000 msec”. In the above example, the bar numbers A and B are the same bar. However, when a plurality of bars are specified as the loop section, the difference between the playback start timing t0 and the playback end timing tend is exactly “2000 msec × number of bars. "become.

  In the example of FIG. 4, the event timings of all the event data 42-7 to 42-14 in the measure designated as the reproduction target are included between the reproduction start timing t0 and the reproduction end timing tend. However, if there is pre-event or post-event data, the event data at the beginning of the measure specified as the reproduction target may be before the reproduction start timing t0. For example, if “3990 msec” is specified in the event time part of the event data 42-14 and the bar line data 42-15, the reproduction start timing t0 is “1990 msec”, and the reproduction start timing t0 is the event data 42−. 7 later than the event timing (1980 msec). In such a case, for example, the reproduction start timing t0 may be corrected to the event timing of the event data 42-7, that is, “1980 msec”, and the event processing of the event data 42-14 may be rounded up to “3980 msec”. The event time of the event data 42-7 is corrected to be equal to the reproduction start timing t0, that is, “1990 msec”.

  Here, in this embodiment, the significance of recording the difference Δts in the bar line data will be described. Since the example shown in FIG. 4 is a simple example, the bar line position is always a multiple of “2000 msec” in the calculation. Therefore, if the value of the bar number part 42-kd is used, the difference Δts is not particularly recorded. The bar line position can be calculated. However, in actual music, the tempo changes in the middle of the music, or there are situations such as the presence of an incomplete measure. Therefore, it is difficult to calculate the bar line position by calculation with a simple calculation. Therefore, it is desirable to record the difference Δts in each bar line data.

  Next, when the processing proceeds to step SP16 in FIG. 6, the clock circuit 5 sets the reproduction start timing t0 to the time data t that is the reference timing for reproducing the game control data and the music data, and the loop count (variable) LC. Is set to “0”, and counting of the time data t is started. Next, when the process proceeds to step SP17, the operation instruction mark up to the final note-off event of each measure and the measure lines 112 and 114 are displayed on the LCD 2 for the measure number A and measure number A + 1.

  Next, when the process proceeds to step SP18, a game related process subroutine shown in FIG. 8 is called. When the process proceeds to step SP52 in FIG. 8, the current score and the like are calculated, and the display of the score column 120, the miss evaluation value column 122, and the total number of misses column 124 is updated. Next, when the process proceeds to step SP54, the position of the reproduction position cursor 110 is moved to a position corresponding to the time data t. Next, when the process proceeds to step SP56, it is determined whether or not the time data t has reached the final note-off timing within the measure. If “YES” is determined here, the process proceeds to step SP58, and the display content of the measure is updated. For example, the first bar and the second bar of the game control data are displayed on the LCD 2, and when the playback position cursor 110 reaches the final note-off timing in the first bar, it corresponds to the note-on event in the first bar. The operation instruction mark to be deleted is deleted, and an operation instruction mark corresponding to the third measure is displayed instead.

  Here, the “bars” that are units updated in step SP58, such as the first bar to the third bar, are bars that are delimited by the effective bar line positions. On the other hand, the bar lines 112 and 114 in the LCD 2 correspond to the bar line positions in the calculation. For this reason, the operation instruction mark corresponding to the third bar is not necessarily displayed between the bar line 112 and the bar line 114. For example, if there is a previous note-on event in the third measure and the event timing is located slightly before the calculated third measure line position, it is slightly to the left of the right edge 116 of the screen. A corresponding operation instruction mark is displayed at the position. When the above steps are completed, the process returns to the main routine (FIG. 6).

  Next, when the process proceeds to step SP19, it is determined whether or not the current time data t is the event valid timing txa or more. Here, the event valid timing txa is the value of the event time part 42-ka (1980 msec in the example of FIG. 4) of the measure line data of the loop start measure number A, and an event earlier than this timing is ignored. There is a need. If "YES" is determined here, the process proceeds to step SP20, and it is determined whether or not the current time data t matches the timing of any note event (note on or note off) of the music data. Is done. If "YES" is determined here, the process proceeds to step SP28, the note event is transmitted to the sound source unit 22, and the corresponding musical sound signal is generated or muted.

  Next, when the process proceeds to step SP22, it is determined whether or not the time data t is greater than or equal to the reproduction end timing tend. If "NO" is determined here, the process returns to step SP18, and the processes of steps SP18 to SP22 are repeated. Thereafter, when the time data t becomes equal to or greater than the reproduction end timing tend, the process proceeds to step SP24, and the loop count LC is incremented by “1”. Next, when the process proceeds to step SP26, it is determined whether or not the loop count LC is equal to or greater than the loop count LCmax. If "NO" is determined here, the process proceeds to step SP30, the time data t counted in the clock circuit 5 is returned to the reproduction start timing t0, and the process returns to step SP18. As described above, when the note event from the reproduction start timing t0 to the reproduction end timing tend is repeatedly reproduced and the loop count LC reaches the loop count LCmax, “YES” is determined in step SP26, and the processing of this routine is terminated. .

Four. Modifications The present invention is not limited to the above-described embodiments, and various modifications can be made as follows, for example.
(1) In the above embodiment, the event timing of the note-off event located immediately before the effective bar line position of the bar number (B + 1) is set as the playback end timing tend of the loop section, and this playback end timing tend is used as a reference. Although the reproduction start timing t0 of the loop section is obtained, the method for determining the reproduction start timing t0 and the reproduction end timing tend is not limited to the above. That is, the playback start timing t0 may be the same as or earlier than the first note-on event in the loop start measure number A, and the playback end timing tend is the last note-off event in the loop end measure number B. The timing may be the same as or later than that. As long as this condition is satisfied, the timings t0 and tend may be set freely so that the difference between the reproduction end timing tend and the reproduction start timing t0 is a multiple of the calculated bar length.

(2) In step SP19 of the above embodiment, the reproduction of the event data existing in the section where the time data t is earlier than the event valid timing txa is prevented. However, as described above, the timings t0 and tend are set to other than the above embodiment. In this way, the event data before the first note-on event in the loop start measure number A and the event data after the last note-off event in the loop end measure number B are not reproduced together. The condition of step SP19 may be set.

(3) In the above embodiment, the difference Δts between the event timing (effective bar line position) of the bar line data and the calculated bar line position is recorded in the bar line data. Is not necessarily recorded in the bar data, but may be recorded as other data in the performance data. In short, as long as the recording is performed in a manner that can be referred to when the CPU 6 determines the timings t0 and tend, it may be recorded in any manner. Instead of the difference Δts, the corresponding “calculated bar line position itself” may be recorded in the performance data. That is, the corresponding data may be recorded in such a way that the CPU 6 can recognize the bar line position for calculation.

(4) In the above embodiment, loop section determination processing and loop playback processing are executed by a program operating on the music player, but only this program is stored in a recording medium such as a CD-ROM or a memory card. It can be distributed or distributed through a transmission line.

It is a hardware block diagram of the music player of one Example of this invention. FIG. 6 is a block diagram of an algorithm in the music sound reproduction unit 20. It is a top view of the operation panel of a music player. It is a data structure figure of performance data. It is a flowchart (1/2) of a performance data reproduction routine. It is a flowchart (2/2) of a performance data reproduction routine. It is a figure which shows the relationship between a bar and bar number. It is a flowchart of a game related process subroutine.

Explanation of symbols

  1: music player, 2: LCD, 4: LCD interface, 5: clock circuit, 6: CPU (processing device), 8: DA converter, 9: sound system, 10: system bus, 12: RAM, 14: ROM, 16: Communication module, 18: Operation unit, 20: Music sound reproduction unit, 22: Sound source unit, 24: Decoder, 26: DSP, 26a, 26b: Effect application unit, 26c: Addition unit, 30: Compressed audio data, 32: Performance data, 40: header part, 42: event data part, 42-1 to 42-n: event data, 42-1a: event time part, 42-1b: event part, 42-1c: identification ID part, 42- 1d: Bar number part, 42-1e: Difference display part, 81, 82: Game button, 83: Menu button, 84, 85: Song selection button, 86: Play / stop button 91-94: Upper operation instruction mark, 101-106: Lower operation instruction mark, 110: Playback position cursor, 112, 114: Bar line, 116: Right edge of screen, 120: Score column, 122: Miss evaluation value column, 124: Miss total column.

Claims (9)

Record note event data instructing the sound generation and mute, and (a) an effective measure line position that is an uneven measure line position, and (b) an equal calculation that is calculated based on the tempo and time signature of the song. A performance data reproducing device for determining a loop section which is a section to be repeatedly reproduced from the performance data based on performance data capable of specifying an upper bar line position, and reproducing the performance data in a loop,
When the designation of the loop start bar and the loop end bar is received, the first calculated bar line position corresponding to the first effective bar line position related to the start timing of the loop start bar and the end timing of the loop end bar are set. A calculation bar line position recognition means for recognizing a second calculation bar line position corresponding to the second effective bar line position;
A loop interval having an interval equal to an interval from the first calculated bar line position to the second calculated bar line position, and a note-on event that occurs first after the first effective bar line position; A loop section having a playback start timing at the same time or before the note-on event and having a playback end timing at the same time as the note-off event last ended before the second effective bar line position or after the note-off event is determined. A performance data reproducing apparatus comprising: a loop section determining means for performing The performance data includes bar line data which is event data for designating the effective bar line position,
2. The performance data reproducing apparatus according to claim 1, wherein each bar line data has an event timing of the bar line data and a difference between a calculated bar line position corresponding to the event timing. Time data generating means for repeatedly looping time data in a range from the reproduction start timing to the reproduction end timing;
2. Reproducing means for reproducing note event data whose event timing matches the time data in the note event data on condition that the note event data belongs to the loop section. Or the performance data reproducing apparatus of 2. Performance data including measure line data that specifies the effective measure line position, which is an unequal measure line position, and note event data that specifies the sound production or mute, and the time axis applied to the performance data. The playback start timing of the loop section, the playback end timing of the loop section defined on the time axis, and one or a plurality of loop target bars to be played back of the loop section, depending on the effective bar line position A loop playback method for loop-playing the performance data based on a loop target measure to be divided,
Time data generation means for repeatedly looping time data in a section between the reproduction start timing and the reproduction end timing;
Reproduction means for reproducing note event data whose event timing coincides with the time data in the note event data, on condition that the note event data belongs to the loop target measure apparatus. A performance data reproducing device for reproducing music data and displaying the contents of event data included in the performance data on a display device according to the performance data corresponding to the music data,
The performance data includes bar line data specifying an effective bar line position that is an uneven bar line position,
An apparatus for reproducing performance data, comprising: updating means for updating the display content of the display device with an interval delimited by the effective bar line position as an update unit. A data structure of performance data including bar line data that specifies an effective bar line position that is an uneven bar line position,
The calculated bar line position calculated in the calculation based on the tempo and time signature of the musical piece related to the performance data, or the difference between the calculated bar line position specified in the bar line data and the calculated bar line position is recorded. A data structure of performance data characterized by Based on performance data that can identify (a) an effective bar line position that is an uneven bar line position and (b) a calculated bar line position that is calculated based on the tempo and time signature of the music. A program that determines a loop section that is a section that is repeatedly played out of the performance data using
When the designation of the loop start bar and the loop end bar is received, the first calculated bar line position corresponding to the first effective bar line position related to the start timing of the loop start bar and the end timing of the loop end bar are set. A computational bar line position recognition process for recognizing a second calculated bar line position corresponding to the second effective bar line position;
A loop interval having an interval equal to an interval from the first calculated bar line position to the second calculated bar line position, and a note-on event that occurs first after the first effective bar line position; A loop section having a playback start timing at the same time or before the note-on event and having a playback end timing at the same time as the note-off event last ended before the second effective bar line position or after the note-off event is determined. A program for causing the processing device to execute a loop section determination process to be performed. Performance data including measure line data that specifies the effective measure line position, which is an unequal measure line position, and note event data that specifies the sound production or mute, and the time axis applied to the performance data. The playback start timing of the loop section, the playback end timing of the loop section defined on the time axis, and one or a plurality of loop target bars to be played back of the loop section, depending on the effective bar line position A program for playing back the performance data in a loop using a processing device based on a section to be divided into loops,
A time data generation process in which time data is repeatedly looped in a section between the reproduction start timing and the reproduction end timing;
Playing back the note event data whose event timing matches the time data among the note event data, on the condition that the note event data belongs to the measure to be looped. Program. A processing device for playing back music data and processing the contents of event data included in the performance data corresponding to the music data and including the performance line data specifying the effective measure line position which is an uneven measure line position A program used to display on a display device,
A program for causing the processing device to execute an updating process for updating the display content of the display device, with an interval delimited by the effective bar line position as an update unit.

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