JP5742777B2 - Music playback device, music playback method, and music playback program - Google Patents

Description

  The present invention relates to a music playback device for playing back music. More specifically, the present invention relates to an apparatus for reproducing music by changing the reproduction speed based on the music data to a designated slow speed and outputting the music.

  Conventionally, there is a playback device that plays back music data. The playback device plays back the music at a predetermined speed according to the music data. Further, it is possible to change the playback speed and add sound to the music data. For example, as an example of a device for adding sound to music data, there is a performance data conversion device of Patent Document 1. Patent Document 1 discloses a performance data conversion device using a performance data conversion technique for performing performance expression on performance data. In this performance data conversion apparatus, the user can specify a desired expression type from a plurality of expression types, and insert data such as sound effects into the performance data according to the specification, thereby performing expression conversion processing. Is called.

Japanese Patent Laid-Open No. 10-105173

  Here, let us consider a case where a musical performance is practiced using music data with a facial expression. When practicing playing a musical instrument, the practicing may be performed with a performance speed at which the musical instrument is played being significantly slower than the playback speed during normal playback based on performance data.

  However, when performance data containing a syllable with a facial expression composed of a plurality of single notes is played back at a significantly slower speed, the interval between the pronunciations of the single notes that make up the syllable with the expression is greatly increased. . For this reason, performance data reproduced at a significantly low speed is generated by dividing the syllables with facial expressions for each single sound constituting the syllable. As a result, the user has a problem that sounds to be heard as syllables with expressions are divided into single sounds.

The music reproducing apparatus according to claim 1, comprising syllable data for generating an expressed syllable composed of a plurality of single sounds for performing a predetermined expression, music data for reproducing a music, and the expressed syllable A music storage unit that stores adjustment syllable data for reproducing the syllable data at a short single sound generation interval that is equal to or shorter than a recognition single sound generation interval that reproduces the plurality of single sounds at a recognizable speed capable of recognizing the music, and the music data Recognizes a syllable that is reproduced from the syllable data by a speed designation unit that designates an arbitrary reproduction speed instead of a reference speed that is a reference for reproduction, and the reproduction speed designated by the speed designation unit. A speed determination unit that determines whether the speed is slower than a recognizable speed, a syllable detection unit that detects a reproduction position of the syllable data in the music data, and a speed determination unit When it is determined that the playback speed is slower than the recognizable speed, a deletion unit that deletes the syllable data at the playback position detected by the syllable detection unit, and a deletion unit that deletes the music data. An adjusted syllable data insertion unit that inserts the adjusted syllable data at a reproduction position of the syllable data, and a reproduction unit that reproduces the music data, wherein the reproduction unit has the designated reproduction speed, slower than the reference speed, and when the recognizable slower than the rate, in a playback position of the syllable data detected by the syllable detection unit, at a short single sound occurrence interval follows the recognized single note generation interval, the adjustment syllable data insertion The adjusted syllable data inserted by the unit is reproduced.

  The music reproducing apparatus according to claim 1, comprising music data for reproducing music, including syllable data for generating an expressed syllable composed of a plurality of single sounds in order to perform predetermined expression. And, instead of a reference speed serving as a reference for reproducing the music data, a speed designating unit that designates an arbitrary reproduction speed, and a reproduction unit that reproduces the music data, and the reproduction unit includes: Recognized single sound that produces the plurality of single sounds at the recognizable speed when the designated reproduction speed is slower than the reference speed and slower than the recognizable speed capable of recognizing the expressed syllable reproduced from the syllable data. The syllable data is reproduced at a short single sound generation interval that is equal to or shorter than the generation interval.

The music playback device according to claim 2 , wherein the playback unit generates the plurality of single notes of the expressed syllable at the specified playback speed at the playback position of the syllable data detected by the syllable detection unit. During the syllable generation time, the adjusted syllable data is repeatedly reproduced at a short single sound generation interval shorter than the recognition single sound generation interval.

The music reproducing device according to claim 3 , further comprising: a type detecting unit that detects a syllable type in which the combination of the plurality of single notes represented in the syllable data is different among the music data, and the music storage unit , the plurality of types of representations with syllables of the syllable data, stores a plurality of the adjustment syllable data to be reproduced at short single note generation interval follows the recognized single note generation interval, the playback unit, the playback speed of the designated When the music data is reproduced, the adjusted syllable data corresponding to the type of syllable detected by the type detecting unit is reproduced.

The music reproducing device according to claim 4 , wherein the music reproduced by the music data is composed of a plurality of parts, and the syllable with expression is a single tone belonging to each of the plurality of parts, and the sounding timing is A plurality of continuous single notes, and the reproduction unit reproduces the adjusted syllable data in a state in which the relationship of the sound generation timings of the plurality of single notes of the plurality of parts constituting the expressive syllable is maintained. Features.
6. The music reproducing apparatus according to claim 5, wherein there is a delay part in which sound generation timing is set so as to occur late at a predetermined timing with respect to a predetermined part among the plurality of parts constituting the music data. A delay determination unit that determines whether or not to perform, and a delay detection unit that detects a delay value indicating a time difference of the delay part with respect to the predetermined part when the delay determination unit determines that the delay part exists. The adjusted syllable data insertion unit includes the syllable detection unit detected by the syllable detection unit with respect to the predetermined part and the delay part when the delay determination unit determines that the delay part exists. The adjusted syllable data is inserted at a data reproduction position, and the reproduction unit constitutes the expressive syllable. With respect to a plurality of parts, a plurality of single sound generation timings constituting the adjustment syllable data of the delay part with respect to a plurality of single sound generation timings constituting the adjustment syllable data of the predetermined part, the delay detection unit The adjusted syllable data of the predetermined part and the delay part is reproduced by delaying a time determined by the delay value detected by the above.

The music playback method according to claim 6, including syllable data for generating an expressed syllable composed of a plurality of single sounds for performing predetermined expression, and music data for reproducing the music, and the expressed syllable. A music storage step for storing adjusted syllable data for reproducing the syllable data at a short single-tone generation interval that is shorter than a recognition single-tone generation interval that pronounces the plurality of single notes at a recognizable speed capable of recognizing, and the music data Recognizing a syllable that is reproduced from the syllable data by a speed designation step for designating an arbitrary reproduction speed instead of a reference speed as a reference for reproduction, and the reproduction speed designated by the speed designation step. A speed determination step for determining whether the speed is slower than a recognizable speed, and a syllable detection step for detecting a reproduction position of the syllable data in the music data. And deleting the syllable data at the playback position detected by the syllable detection step when the speed determination step determines that the playback speed is slower than the recognizable speed, and the music among the data, the reproduction position of the syllable data that have been deleted by said deletion step comprises the adjustment syllable data insertion step for inserting the adjustment syllable data, and a reproduction step of reproducing the music data, the reproduction step When the designated playback speed is slower than the reference speed and slower than the recognizable speed, the playback position of the syllable data detected by the syllable detection step is shorter than the recognition single sound generation interval. a single note generation interval, the adjustment syllable data inserted by the adjustment syllable data insertion step again Characterized in that it.

The music reproduction program according to claim 7 includes syllable data for generating an expressed syllable composed of a plurality of single notes for performing a predetermined expression, music data for reproducing the music, and the expression syllable A music reproducing apparatus comprising a music storage unit that stores adjustment syllable data for reproducing the syllable data at a short single sound generation interval that is shorter than a recognized single sound generation interval that generates the plurality of single sounds at a recognizable speed capable of recognizing Instead of a reference speed serving as a reference for reproducing the music data, the computer accepts a speed designation accepting step for accepting designation of an arbitrary reproduction speed, and the reproduction speed accepted by the speed designation accepting step includes the syllable data. A speed determination step for determining whether or not the expressive syllable played back from a recognizable speed is slower than the recognizable speed; When the syllable detection step for detecting the reproduction position of the syllable data and the speed determination step determine that the reproduction speed is slower than the recognizable speed, the reproduction position detected by the syllable detection step A deletion step of deleting the syllable data; an adjustment syllable data insertion step of inserting the adjusted syllable data at a reproduction position of the syllable data deleted by the deletion step in the music data; and the music data. A reproduction step that reproduces the syllable data detected by the syllable detection step when the designated reproduction speed is slower than the reference speed and slower than the recognizable speed. At the replay position of the recognition unit, the recognition single-note generation interval for generating the plurality of single-notes at the recognizable speed. Short single note generation interval, characterized by reproducing the adjustment syllable data inserted by the adjustment syllable data insertion step of.

The music reproducing apparatus according to claim 1 is shorter than a recognized single sound generation interval that generates a plurality of single sounds at a recognizable speed when the specified reproduction speed of the music data is slower than the reference speed and the recognizable speed. The adjusted syllable data is reproduced so that the pronunciation interval between single notes of the syllable data is shortened at a single note generation interval. Even when the playback speed at which the song data is played is specified to be slower than the reference speed and the recognizable speed, the single notes that make up the syllable are not pronounced separately for each single note, Therefore, the user can recognize it as a syllable.

In the reproduction position of the syllable detected by the sound node detection unit to reproduce the adjustment syllable data recognizable more single note at a rate in a short single sound occurrence interval follows Could recognition monophonic generation interval. Even when a speed slower than the reference speed and the recognizable speed is designated as the playback speed for playing back the music data, a plurality of single notes constituting the syllable at the playback position of the syllable detected by the syllable detection unit, Since the sound is not divided into single notes and the syllable expression is maintained, the user can recognize the syllable more correctly.

The music reproducing apparatus according to claim 2, wherein a short single sound not more than a recognition single sound generation interval that produces a single sound of syllable data and a plurality of single sounds at a recognizable speed during a time for reproducing the syllable data at a specified reproduction speed. Play the adjusted syllable data multiple times at intervals. Since the playback speed specified by the speed specification unit is slower than the reference speed and the recognizable speed, the time to play back syllable data at the specified playback speed is faster than when playing syllable data at a speed faster than the recognizable speed. ,long. For this reason, if syllable data is played back at a speed faster than the recognizable speed during the time when the syllable data is played back at the designated playback speed, there is a possibility that time will be left and silent time will occur. The adjusted syllable data that is played back at a speed faster than the recognizable speed can be played repeatedly several times to prevent silence from occurring, and the user can recognize the syllable as part of the music without a sense of incongruity. Can do.

According to a third aspect of the present invention, the syllable detecting unit detects a syllable type from a combination of a plurality of single notes, and the reproducing unit reproduces an adjusted syllable according to the detected syllable type. The characteristics of syllable expression differ depending on the combination of a plurality of single notes. Therefore, the adjusted syllable storage unit stores adjusted syllables corresponding to the types of syllables according to combinations of a plurality of single notes, and the stored adjusted syllables are reproduced. Even when the reproduction speed for reproducing the music data is specified to be slow, the user can clearly recognize the syllable type by reproducing the adjusted syllable according to the syllable type.

Depending on the composition content of the music data, a plurality of single notes having different parts may constitute a syllable by having a predetermined pronunciation timing relationship. The music playback device according to claim 4 , wherein the playback unit maintains a relationship between sound generation timings of a plurality of single notes and has a speed higher than a specified playback speed even when the syllable is composed of a plurality of parts. By reproducing the syllable data with, the user can recognize a syllable composed of a plurality of parts.

The music playback method according to claim 6 and the music playback program according to claim 7, wherein when the specified playback speed of the music data is slower than the reference speed and the recognizable speed, a plurality of single sounds at a recognizable speed. The adjusted syllable data is reproduced at a short single sound generation interval that is shorter than the recognition single sound generation interval. Even when a speed slower than the reference speed and the recognizable speed is specified as the playback speed for playing music data, it is not pronounced separately for each single sound, and syllable expression is maintained. The user can recognize it as a syllable.

It is a block diagram which shows the schematic structure of the music reproduction system of embodiment of this invention, and the electrical structure of the music reproduction apparatus. It is drawing which shows an example of the change of the content of the MIDI track showing the syllable "roll" reproduced | regenerated by the music reproduction apparatus 1 of this embodiment. It is drawing which shows an example of the change of the content of the MIDI track showing the syllable "Trill" reproduced | regenerated by the music reproduction apparatus 1 of this embodiment. It is drawing which shows an example of the change of the content of the MIDI track showing the syllable "Arpeggio" reproduced | regenerated by the music reproduction apparatus 1 of this embodiment. It is drawing which shows an example of the change of the content of the some MIDI track showing the syllable "delay" reproduced | regenerated by the music reproduction apparatus 1 of this embodiment. It is a flowchart which shows the reproduction speed change main process of the music reproduction apparatus 1 of this embodiment. It is a flowchart which shows the detection process of this embodiment. It is a flowchart which shows the application process of this embodiment.

  Hereinafter, an embodiment of a music playback device of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a music playback system according to the present embodiment and an electrical configuration of a music playback device used in the music playback system. A music playback device 1 shown in FIG. 1 is a so-called karaoke commander. The music reproducing device 1 includes a remote control terminal 10. The music reproducing apparatus 1 according to the present embodiment has a function of assisting guitar practice using a function of assisting human singing. The remote control terminal 10 is a device that sends a command to the music reproducing device 1 by an infrared signal. The remote control terminal 10 has an operation unit operated by a user. By operating the operation unit, a predetermined operation signal is transmitted from the remote control terminal 10 to the music reproducing device 1. For example, by operating the operation unit of the remote control terminal 10, karaoke music is reserved. Then, an operation signal indicating the song number of the reserved karaoke song is transmitted from the remote control terminal 10 to the song reproducing device 1. When receiving the operation signal, the music playback device 1 temporarily stores the music indicated by the operation signal as a reserved music in a RAM or the like.

  The remote control terminal 10 is configured to be communicable with an access point 110 installed in each karaoke store or the like. The access point 110 includes, for example, a wireless LAN interface and an antenna. The access point 110 can be connected to a WAN such as the Internet via the router 120. The remote control terminal 10 is connected to the LAN 100 in the karaoke store via the access point 110. As a result, the remote control terminal 10 can transmit and receive information to and from the music playback device 1 connected to the LAN 100. The remote control terminal 10 includes an acceleration button 10a that speeds up the music playback speed, a deceleration button 10b that slows down the music playback speed, and a decision button 10c that determines the playback speed. A standard playback speed is set for each piece of music. Then, the remote control terminal 10 transmits an instruction for accelerating or decelerating the playback speed of the music to the music playback apparatus 1 in accordance with an instruction from the acceleration button 10a or the deceleration button 10b. When the music playback device 1 detects that the acceleration button 10a or the deceleration button 10b is pressed and the determination button 10c is pressed, the music playback speed is compared with the music playback speed according to the instruction from the remote control terminal 10. To change. In the present embodiment, the playback speed set in association with the music every time the acceleration button 10a of the remote control terminal 10 is pressed once, with the number of times the acceleration button 10a or the deceleration button 10b is pressed as a reference playback speed. The speed is increased by + 30% with respect to the reference playback speed. The playback speed set in association with the music every time the deceleration button 10b of the remote control terminal 10 is pressed once, with the number of times the acceleration button 10a or the deceleration button 10b is pressed as a reference playback speed, It is accelerated by -30% with respect to the standard reproduction speed.

[Configuration of music playback device]
As shown in FIG. 1, the music playback device 1 includes a control unit 12. The control unit 12 controls each component of the music playback device 1. The control unit 12 is a controller composed of, for example, a CPU and a RAM. The processing of the music reproducing device 1 is executed by the CPU of the control unit 12. Various data generated by the processing of the CPU of the control unit 12 is temporarily stored in the RAM of the control unit 12. The control unit 12 is connected to the LAN interface unit 14, the storage unit 16, the operation processing unit 22, the MIDI sequencer 25, the software sound source 27, the video RAM 32, and the video control unit 38.

  The LAN interface unit 14 is connected to the LAN 100 in addition to the control unit 12. The LAN interface unit 14 enables the music playback device 1 to communicate with the Internet and the remote control terminal 10.

  The storage unit 16 includes a hard disk (HDD) that stores various types of information. The storage unit 16 includes a MIDI data storage area 161, an adjusted syllable storage area 162, and a program storage area 163. The MIDI data storage area 161 stores MIDI data composed of a plurality of MIDI tracks. A plurality of MIDI tracks constituting the MIDI data are reproduced by the music reproducing device 1 to become music. The MIDI data is associated with a reference playback speed for playing back music based on the MIDI data. The playback speed of the music is indicated by BPM (Beats Per Minute) indicating the unit of playback tempo, and the reference playback speed is, for example, “BPM = 120”. Note that the reference playback speed is set for each piece of music, and the reference playback speed value is different for each piece of music.

  The adjusted syllable storage area 162 stores the MIDI track of the adjusted syllable. Details of the configuration of the MIDI track stored in the MIDI data storage area 161 and the adjusted syllable storage area 162 will be described later. The program storage area 163 stores a program for executing a reproduction speed change main process, a detection process, and an application process of the music reproducing apparatus 1. The program of the music playback device 1 of the present embodiment may be downloaded from a predetermined server on the network, for example, or may be recorded on a recording medium such as a CD-ROM and read via a drive of the recording medium You may be made to do.

  The operation processing unit 22 is connected not only to the control unit 12 but also to the operation unit 18 and the infrared receiving unit 20. The operation unit 18 is operated by the user of the music playback device 1. Similar to the remote control terminal 10, the operation unit 18 includes an acceleration button for increasing the music reproduction speed and a deceleration button for decreasing the music reproduction speed. The operation unit 18 gives an instruction for accelerating or decelerating the playback speed of the music in accordance with an instruction by the acceleration button or the deceleration button. An input signal operated by the operation unit 18 is output to the operation processing unit 22. The infrared receiver 20 receives the infrared signal transmitted from the remote control terminal 10. The received infrared signal is output to the operation processing unit 22. The operation processing unit 22 determines the operation content based on the input signal. Specifically, the operation processing unit 22 determines to change the music playback speed by + 30% or −30% according to the number of times the acceleration button or the deceleration button of the remote control terminal 10 or the operation unit 18 is pressed. The control unit 12 connected to the operation processing unit 22 controls the music reproducing device 1 based on the determined operation content.

  The MIDI sequencer 25 is connected not only to the control unit 12 but also to a hardware sound source 26 and a software sound source 27. The hardware sound source 26 is hardware that generates an output signal for outputting sound. The software sound source 27 is software that generates an output signal for outputting sound. The MIDI sequencer 25 causes the hardware sound source 26 and the software sound source 27 to generate an output signal based on the MIDI data in the MIDI data storage area 161 and the MIDI data of the adjusted syllable in the adjusted syllable storage area 162. The hardware sound source 26 and the software sound source 27 are connected to the mixing amplifier 28.

  The mixing amplifier 28 is connected to the guitar control unit 29 and the speaker 30. The mixing amplifier 28 synthesizes the output signals generated by the hardware sound source 26 and the software sound source 27 and outputs the synthesized signal to the speaker 30. Thereby, a sound is output from the speaker 30.

  Further, the mixing amplifier 28 is connected to the guitar control unit 29. The guitar control unit 29 is connected to a guitar (not shown). Based on the information input by the guitar, the guitar control unit 29 generates a performance signal. The guitar control unit 29 outputs the generated performance signal to the mixing amplifier 28. The mixing amplifier 28 causes the speaker 30 to output the performance sound input by the guitar based on the performance signal.

  The video RAM 32 is connected to the video controller 38 in addition to being connected to the controller 12. The video RAM 32 temporarily stores the video information stored in the storage unit 16. The video control unit 38 is connected to the video RAM 32, the control unit 12, and the display unit 36. The control unit 12 outputs a command to output the video information temporarily stored in the video RAM 32 to the video RAM 32 and the video control unit 38. The video control unit 38 causes the display unit 36 to output the video information stored in the video RAM 32 based on a command for outputting the video information from the control unit 12.

[Configuration of MIDI track]
Next, with reference to FIGS. 2A to 2C and FIG. 3, an example of a MIDI track constituting MIDI data to be reproduced by the music reproducing device 1 of the present embodiment will be described. 2A to 2C and FIG. 3 are conceptual diagrams showing the relationship between the sound generation timing of sound generated according to the MIDI track and the passage of time. 2A to 2C and FIG. 3 show the relationship between the sound generation timing of each sound of the MIDI track and the elapsed time since the playback of the MIDI track of the MIDI data is set on the horizontal axis. 2 is a conceptual diagram of a MIDI track. Each MIDI track shown in FIGS. 2A to 2C and FIG. 3 is associated with a channel indicating the type of musical instrument to be sounded.

  The MIDI track is information about a note indicating a sound. The MIDI track includes a note number, note on, and note off for a note. The note number is a number representing the pitch of the sound. The note number is, for example, the pitch of the sound assigned 0 as the lowest sound and 127 as the highest sound. Note-on is a command to sound, and note-off is a command to stop sound. Each note-on and note-off command is assigned a note number, and a command to play or stop the sound at any pitch is issued by note-on and note-off. Each note-on and note-off is associated with a velocity not shown. Velocity is the strength of the sound set for the track sound. Specifically, the velocity is a value for setting the amplitude of the sound waveform for each sound. A MIDI track is associated with a channel and a track volume. The track volume indicates the loudness of the sound that is set for the track. The track volume is a value for setting the amplitude of the sound waveform for each track. In addition to channels and track volumes, MIDI tracks are associated with reverb levels and the like. According to the tone color of the musical instrument of the type indicated by the channel associated with the MIDI track, the volume of the sound indicated by the track volume, etc., the sound of the note number and velocity is started at the note-on timing. At the note-off timing, the sound that is composed of the note number, velocity, and track level is terminated.

  2A, (1) in FIG. 2B, (1) in FIG. 2C, and (1a), (1b) in FIG. 3 are stored in the MIDI data storage area 161 of the storage unit 16 of the music playback device 1. It is a conceptual diagram which shows the structure content of a part of MIDI track of MIDI data.

  In the MIDI track shown in (1) of FIG. 2A, note-on and note-off are alternately repeated at regular intervals eight times during the time determined according to the standard playback speed for the sound of note number “66”. And repeatedly executed. In the present embodiment, for a sound having the same note number, note-on and note-off are continuously repeated a plurality of times at regular intervals.

  In the MIDI track shown in (1) of FIG. 2B, note-on and note-off are repeated a plurality of times in a fixed order and at a fixed interval for a set of sounds of note number “66” and note number “73”. Executed. In the present embodiment, as described above, with regard to a sound set including two or more types of note numbers as a set, note-on and note-off of a plurality of sounds constituting the sound set in a fixed order and at a fixed interval. Is defined as “trill” that is repeated a plurality of times in succession.

  In the MIDI track shown in (1) of FIG. 2C, the sound of note number “66”, note number “73”, note number “80”, note number “92”, and note number “100” appears. In addition, the pitch of a plurality of sounds gradually increases, and a certain number of note-on and note-off operations are performed within a certain time. In the present embodiment, a plurality of sounds whose pitches gradually increase like sounds of a plurality of types of note numbers are subjected to a certain number of note-on and note-off within a certain time. Is defined.

  Each MIDI track shown in (1) in FIG. 2A, (1) in FIG. 2B, and (1) in FIG. 2C has flags F1 and F2 at the playback positions of “roll”, “tril”, and “arpegio”. ing. The flag F1 is a start flag indicating the start point of the “roll”, “tril”, or “arpegio” of each MIDI track. The flag F2 is an end flag indicating the end point of “roll”, “tril”, or “arpegio” of each MIDI track. When a playback speed change main process, which will be described later, is executed, a start flag and an end flag attached to the MIDI track are detected, so that one of the start point of “Roll”, “Trill”, or “Arpeggio” and The end point is determined.

  The MIDI track (1b) in FIG. 3 is a delay track with respect to the MIDI track (1a) in FIG. The delay track refers to another MIDI track that has the same note number as the sound of a certain MIDI track and is delayed with respect to the MIDI track having a sounding timing. In the present embodiment, a set of a MIDI track sound and a delay track sound relative to the MIDI track sound is defined as “delay”. In the MIDI track of (1a) in FIG. 3, a flag F1, which is a start flag, is added to the starting point of the sound generation of the MIDI track. In the delay track of (1b) in FIG. 3, a flag F2 that is an end flag is attached to the start point of the sound of the delay track for the MIDI track.

  In this embodiment, a set of sounds corresponding to “roll”, “tril”, “arpeggio”, or “delay” in a MIDI track is defined as a syllable. The syllable flags F1 and F2 may be attached by the music manager or the user who uses the music, or by analyzing each sound constituting the MIDI track in the music reproducing device 1, the “roll” is set. "," Trill "," Arpeggio ", or" Delay "may be added before and after the section.

  Next, the MIDI track of the adjusted syllable stored in the adjusted syllable storage area 162 of the storage unit 16 will be described. The MIDI track of the adjusted syllable is replaced with a syllable between the flags F1 and F2 when an instruction to significantly reduce the playback speed is given when the MIDI track stored in the MIDI data storage area 161 is played back. It is used as substitute data that is a syllable. The adjusted syllable storage area 162 stores the MIDI track of the adjusted syllable for each of the types of syllables “roll”, “tril”, and “arpeggio”. The MIDI track of the adjusted syllable has the interval from note-on to note-off and the interval from note-off to note-on for each syllable type, from the note-on to the note of the MIDI track stored in the MIDI data storage area 161. This is a syllable track that is set shorter than the interval from off to the interval from note off to note on.

  When the music playback device 1 is instructed to significantly slow down the playback speed of the music, the music playback device 1 sets the adjustment syllables for the syllables “roll”, “tril”, and “arpegio” in the MIDI track stored in the MIDI data storage area 161. The syllable of the MIDI track is used as substitute data. Specifically, when the music playback device 1 is instructed to greatly slow down the playback speed of the music, the syllable type is determined during the time required for the syllable to be executed at the instructed slow playback speed. The note on and note off of the sound are executed according to the MIDI track of the adjusted syllable that is the same and in which the interval from note on to note off and the interval from note off to note on are set short.

[Playback speed change main processing]
The operation and action of the music reproducing device 1 of the present embodiment having the above-described configuration will be described with reference to the drawings. First, the reproduction speed change main process of the music reproducing apparatus 1 will be described with reference to FIG. FIG. 4 is a flowchart showing the processing procedure of the playback speed change main process of the music playback device 1. The playback speed change main process is executed when the music playback device 1 is connected to an external power source such as a commercial power source via a power source or an outlet. The processing shown below is executed by the control unit 12 of the music reproducing device 1. In the present embodiment, the following will be described by taking as an example a case where the playback speed is changed before the music is played using the music playback device 1.

  First, in the reproduction speed change main process shown in FIG. 4, in step S100, music selection for selecting a music to be reproduced is performed. In music selection, a user selects a predetermined music using the remote control terminal 10 or the like. When a song is selected in step S100, the MIDI track of the MIDI data of the song to be played and the reference playback speed for playing the song are specified.

  In step S120, it is determined whether or not an instruction to change the playback speed has been given for the selected music piece. If it is determined that an instruction to change the playback speed has been given (step S120: YES), the process of step S140 is executed. If it is not determined that an instruction to change the playback speed has been issued (step S120: NO), the process of step S240 is executed.

  In step S140, it is determined whether or not the instructed playback speed is slower than a predetermined playback speed. The predetermined playback speed is a playback speed determined to be significantly slower than the standard playback speed of the music. If it is determined that the instructed playback speed is slower than the predetermined playback speed (step S140: YES), the process of step S160 is executed. If it is not determined that the instructed playback speed is slower than the predetermined playback speed (step S140: NO), the process of step S220 is executed. Specifically, when the deceleration button 10b of the remote control terminal 10 is pressed three times and a playback speed of -90% is set with respect to the reference playback speed, a predetermined playback speed determined to be significantly slow To do. When the remote control terminal 10 depresses the deceleration button 10b three times or more, it is determined that a reproduction speed equal to or lower than a predetermined reproduction speed of −90% is designated (step S140: YES), and the process of step S160 Is executed. When the deceleration button 10b is pressed twice by the remote control terminal 10, a playback speed of -60% is set with respect to the reference playback speed. In this case, it is not determined that a reproduction speed equal to or lower than the predetermined reproduction speed of −90% is designated (step S140: NO), and the process of step S220 is executed.

  In step S160, a detection process is executed. In the detection process, the presence or absence of a syllable, the type of syllable, and the position of a syllable are detected for each MIDI track of the MIDI data of the music to be reproduced. The detection processing of each syllable described later is executed in the order of “roll”, “tril”, “arpeggio”, and “delay”. When the detection process is executed, the process of step S180 is subsequently executed.

  In step S180, a process of changing the music playback speed from the standard playback speed to the playback speed instructed by the remote control terminal 10 is performed. For a song whose reference playback speed is “BPM = 120”, when the remote control terminal 10 presses the deceleration button 10b three times to instruct to change to a playback speed of −90%, in step S180, the song Is changed to “BPM = 12”. When the processing of step S180 is performed, the playback speed of the MIDI track in which the syllable “roll” shown in (2) of FIG. 2A exists is changed, and the MIDI track is played back as shown in (3) of FIG. 2A. Time is extended. The playback speed of the MIDI track having the syllable “Trill” shown in (2) of FIG. 2B is changed, and the time for playing back the MIDI track is extended as shown in (3) of FIG. 2B. The playback speed of the MIDI track having the syllable “Arpeggio” shown in (2) of FIG. 2C is changed, and the time for playing back the MIDI track is extended as shown in (3) of FIG. 2C. The main track of the MIDI data having the syllable “delay” shown in (2a) of FIG. 3 has its playback speed changed, and the time for playing back the MIDI track is extended as shown in (3a) of FIG. In the delay track of MIDI data in which the syllable “delay” shown in (2b) of FIG. 3 exists, the time for reproducing the MIDI track is extended as shown in (3b) of FIG.

  In step S200, an application process is performed. In the application process, using the MIDI track of the adjusted syllable stored in the adjusted syllable storage area 162, a process of changing the note of the syllable portion of the MIDI track of the music to be played back is performed. When the application process is performed, the syllable of the MIDI track is changed to the syllable of the MIDI track of the adjustment syllable whose sounding timing interval of each note is short with respect to the syllable of the MIDI track of the MIDI data stored in the MIDI data storage area 161. Is done.

  In step S220, it is determined in step S120 that an instruction to change the playback speed of the music has been given (step S120: YES). In step S140, the playback speed instructed to change is a predetermined playback speed of −90%. When it is not determined that it is below (step S140: NO), a process of changing the music playback speed to the instructed playback speed is performed. For example, when the deceleration button 10b is pressed twice by the remote control terminal 10 to instruct to change the playback speed to −60%, the music playback speed is changed to “BPM = 48” in step S220.

  In step S240, an instruction to reproduce the music is issued. When step S240 is executed, the music selected from the music selected in step S100 is played back in accordance with the MIDI tracks that are the plurality of MIDI tracks constituting the MIDI data of the music and have undergone the processing in steps S120 to S220. Is done.

  In step S260, it is determined whether or not the reproduction of the music has ended. If it is determined that the music has been reproduced (step S260: YES), the process of step S280 is executed. If it is not determined that the reproduction of the music has ended (step S260: NO), the process of step S120 is executed.

  In step S280, it is determined whether an instruction to turn off the power has been issued. If it is determined that an instruction to turn off the power has been given (step S280: YES), the playback speed change main process is terminated. If it is not determined that an instruction to turn off the power has been given (step S280: NO), the process of step S100 is executed.

  Next, details of the detection process and the application process of the reproduction speed change main process will be described with reference to FIGS. 2A to 2C and FIG. (2) to (4) in FIG. 2A, (2) to (4) in FIG. 2B, and (2) to (4) in FIG. 2C are respectively (1) in FIG. 2A, (1) in FIG. It is a conceptual diagram which shows the change of the MIDI track in the process in which a detection process and an application process are performed about the MIDI track | truck (1) of 2C. 3 (2a), (2b) to (3a), (3b) in FIG. 3 are the MIDI in the process in which the detection process and the application process are executed for the MIDI track of (1a), (1b) in FIG. It is a conceptual diagram which shows the change of a track | truck.

[Detection processing]
The detection process executed in the reproduction speed change main process of the music reproducing apparatus 1 will be described with reference to FIG. FIG. 5 is a flowchart showing a processing procedure of detection processing in the music reproducing device 1. The detection processing is executed by the music playback device 1 in step S160 of the playback speed change main processing. In the detection process, steps S161 to S167 are executed.

  First, in step S161, the syllable “roll” is detected from the MIDI data of the music selected in step S100. For example, the position indicated by the flag F1 and the flag F2 is detected from the MIDI track of the MIDI data shown in (1) of FIG. 2A. In the MIDI track shown in (1) of FIG. 2A, since the note numbers indicating the sounds existing between the flags F1 and F2 are all the note number “66”, the syllable type is “roll”. Is determined.

  In step S162, the syllable “Trill” in the MIDI data of the music is detected. For example, the position indicated by the flag F1 and the flag F2 is detected from the MIDI track of the MIDI data shown in (1) of FIG. 2B. In the MIDI track shown in (1) of FIG. 2B, as a note indicating a sound existing between the flag F1 and the flag F2, there is a set of sounds having a note number “66” and a note number “73” as one cycle. Since it exists and the set of sounds is repeated three cycles, the type of syllable is determined as “Trill”.

  In step S163, the syllable "Arpeggio" in the MIDI data of the music is detected. For example, the position indicated by the flag F1 and the flag F2 is detected from the MIDI track of the MIDI data shown in (1) of FIG. 2C. In the MIDI track shown in (1) of FIG. 2C, note numbers “66”, note numbers “73”, note numbers “80”, note numbers are shown as notes indicating the sound existing between the flags F1 and F2. “92” and note number “100” exist. In the MIDI track shown in (1) of FIG. 2C, note-on and note-off of the note number exist so that five sounds are generated within a certain time, and five pitches are set. Since the indicated note number gradually increases, the syllable type is determined to be “Arpeggio”.

  For each syllable “Trill”, “Roll”, “Arpeggio” determined by the processing of Step S161 to Step S163, the type of syllable, the position of the syllable, the note number of the syllable, and the syllable note-on to note-off. The interval and the interval from note-off to note-on of the syllable are temporarily stored in the RAM of the control unit 12.

  In step S164, the notes between the flags F1 and F2 of each syllable “roll”, “tril”, and “arpegio” detected in the processing of steps S161 to S163 are deleted from each MIDI track of the MIDI data. It becomes an empty section. When the syllable “roll” is deleted by the process of step S164, the MIDI track is in a state shown in (2) of FIG. 2A. When the syllable “Trill” is deleted by the process of step S164, the MIDI track is in a state shown in (2) of FIG. 2B. When the syllable “Arpeggio” is deleted by the process of step S164, the MIDI track is in the state shown in (2) of FIG. 2C.

  In step S165, it is determined whether or not a delay track exists in the plurality of MIDI tracks of the MIDI data. In step S165, as shown in (1b) of FIG. 3, while a note of a certain MIDI track as the main track is being sounded, the note-on is performed so that a note of the same note number is generated later at a certain timing. When there is a MIDI track set to note-off, it is determined that a delay track exists. For example, in the two MIDI tracks of the MIDI data shown in FIG. 3, the MIDI track shown in (1b) of FIG. 3 is a delay track with respect to the MIDI track shown in (1a) of FIG. 3 as the main track. If it is determined that a delay track exists (step S165: YES), the process of step S166 is executed. If it is not determined that there is a delay track (step S165: NO), the detection process is terminated.

  In step S166, a delay value which is a delay timing value of a note on the MIDI track of the delay track with respect to the MIDI track of the main track is detected. For example, as shown in the delay track of (1b) in FIG. 3, a difference indicating a delay with respect to the main track in (1a) of FIG. 3 is indicated by a flag F1 and a flag F2, and the positions of the flags F1 and F2 By detecting this, the delay value is obtained.

  In step S167, for the main track determined to be present in step S165 and the delay track, processing for matching the note-on and note-off timings of the corresponding notes is performed. Specifically, for example, for the delay track of (1b) in FIG. 3, the delay value obtained in step S166 is subtracted from the start position of the note-on and note-off of each note, and the delay of (1b) in FIG. The positions where the note-on and note-off of the note of the track are started coincide with the positions where the note-on and the note-off of the same note of the main track in FIG. When the process of step S167 is performed, the relationship between the positions where the note-on and note-off of each note of the MIDI track and the main track and the delay track are started is (2a) in FIG. 3 and (2b) in FIG. It will be in the state shown in When the process of step S167 is executed, the detection process ends.

[Apply process]
Next, application processing executed in the playback speed change main processing of the music playback device 1 will be described with reference to FIG. FIG. 6 is a flowchart showing a processing procedure of application processing in the music reproducing device 1. The application process is executed by the music playback device 1 in step S200 of the playback speed change main process. The application process is performed in steps S201 to S210.

  In step S201, it is determined whether or not there are delay tracks in a plurality of MIDI tracks of MIDI data. Since the specific process of step S201 is the same as the process of step S165 in the detection process, description thereof is omitted. In step S201, it may be determined whether or not there is a delay track using information indicating whether or not the delay track determined in step S165 exists.

  In step S202, the delay value detected in step S166 of the detection process is applied to the delay track of the MIDI data whose playback speed has been changed. Specifically, with respect to the delay track shown in (2b) of FIG. 3, the note-on and note-off timings of each note are set so as to be played back with a delay of a time determined by the delay value. When step S202 is performed, for each note of the delay track of the MIDI data to which the delay value is applied, the setting is made such that note-on and note-off are executed at the timing shown in (3b) of FIG. In addition, when the syllable types “roll”, “tril”, and “arpeggio” are present in the MIDI track that is a delay track, the syllable of the syllable to which the MIDI track of the adjusted syllable inserted by the processing described later is applied. The delay value is also applied to the notes of the part.

  In step S203, it is determined whether or not there is an empty section of the syllable “roll” detected by the process of step S161 of the detection process and deleted by the process of step S164 in the MIDI track. If it is determined that there is an empty section of the syllable “roll” (step S203: YES), the process of step S204 is performed. If it is not determined that there is an empty section of the syllable “roll” (step S203: NO), the process of step S206 is performed.

  In step S204, a note is inserted at the position of the syllable “roll” determined to have free space according to the MIDI track of the adjusted syllable stored in the adjusted syllable storage area 162 of the storage unit 16. Specifically, the note syllable “roll” position of the MIDI track deleted in step S 164 and the note-on and note-off start positions based on the syllable note numbers stored in the RAM are stored in the adjustment syllable storage area 162. Among the stored adjustment syllable MIDI tracks, substitute data is inserted according to the interval from note-on to note-off and the interval from note-off to note-on of the syllable “roll” adjustment syllable. The

  In step S205, it is determined whether or not an empty space exists at the position of the syllable “roll” in the MIDI track. If it is determined that an empty space exists at the position of the syllable “roll” of the MIDI track (step S205: YES), the process of step S204 is executed. If it is not determined that there is a free space (step S205: NO), the application process is terminated. When the process of step S205 is performed and it is not determined that there is a free space (step S205: NO), the MIDI track is in the state shown in (4) of FIG. 2A.

  In step S206, it is determined whether or not there is an empty section of the syllable “Trill” detected by the process of step S162 of the detection process and deleted by the process of step S164 in the MIDI track. If it is determined that there is an empty section of the syllable “Trill” (step S206: YES), the process of step S207 is performed. If it is not determined that there is an empty section of the syllable “Trill” (step S206: NO), the process of step S209 is performed.

  In step S207, a note is inserted at the position of the syllable “Trill” determined to have free space according to the MIDI track of the adjusted syllable stored in the adjusted syllable storage area 162 of the storage unit 16. Specifically, the position of the note-on and note-off start by the note number of the syllable stored in the RAM is stored in the adjusted syllable storage area 162 at the position of the syllable “Trill” of the MIDI track deleted in step S164. Among the stored adjustment syllable MIDI tracks, substitute data is inserted according to the interval from note-on to note-off and the interval from note-off to note-on of the adjustment syllable MIDI track of the syllable “Trill”. The

  In step S208, it is determined whether or not there is an empty space at the position of the syllable “Trill” in the MIDI track. If it is determined that there is an empty space at the position of the syllable “Trill” of the MIDI track (step S208: YES), the process of step S207 is executed. If it is not determined that there is a free space (step S208: NO), the application process is terminated. When the process of step S208 is performed and it is not determined that there is a free space (step S208: NO), the MIDI track is in the state shown in (4) of FIG. 2B.

  In step S209, it is determined whether or not there is an empty section of the syllable “arpeggio” detected by the process of step S163 of the detection process and deleted by the process of step S164 in the MIDI track. If it is determined that there is an empty section of the syllable “Arpeggio” (step S209: YES), the process of step S210 is performed. If it is not determined that there is an empty section of the syllable “Arpeggio” (step S209: NO), the application process ends.

  In step S 210, a note is inserted at the position of the syllable “Arpeggio” determined to have free space according to the MIDI track of the adjusted syllable stored in the adjusted syllable storage area 162 of the storage unit 16. Specifically, the note syllable “arpeggio” position of the MIDI track deleted in step S164 and the note-on and note-off start positions by the syllable note number stored in the RAM are stored in the adjusted syllable storage area 162. Substitute data determined according to the interval from note-on to note-off and the interval from note-off to note-on of the MIDI track of the adjustment syllable of the syllable "Arpeggio" among the stored MIDI tracks of adjusted syllables The When step S210 is executed, the MIDI track is in the state shown in (4) of FIG. 2C.

(Correspondence between the configuration of the present invention and this embodiment)
In the present embodiment, the music playback device 1 that plays back MIDI data is an example of the music playback device of the present invention. The remote control terminal 10 or the operation unit 18 of the present embodiment is an example of the speed specifying unit of the present invention. In the present embodiment, operating the remote control terminal 10 or the operation unit 18 is an example of a speed specifying step. In the present embodiment, determining that the playback speed has been changed by the remote control terminal 10 or the operation unit 18 by the process of step S120 of the music change main process is an example of the speed designation receiving step of the present invention.

  The syllable types “Roll”, “Trill”, “Arpeggio”, and “Delay” of the present embodiment are examples of the expression of the present invention and examples of the types of syllable data. In the MIDI track of the present embodiment, the flag F1 is an example of the reproduction position of the present invention, and the section indicated by the flag F1 and the flag F2 is an example of the expressive syllable of the present invention. The track in the section indicated by the flag F1 and the flag F2 of the MIDI track of this embodiment is an example of the syllable data of the present invention. In the present embodiment, the control unit 12 that detects the flag F1 and the flag F2 of the MIDI track is an example of the syllable detection unit of the present invention.

  In the MIDI track of the present embodiment, the interval from when a note is turned on to when the next note is turned on is an example of the single sound generation interval of the present invention. For example, in the “roll” shown in FIG. 2A of the present embodiment, the note with the note number “66” as the first note is turned on, and the note with the note number “66” as the second note is turned on. The interval until a note is turned on is an example of a single tone generation interval according to the present invention. In the “Trill” shown in FIG. 2B of the present embodiment, the note with the note number “66”, which is the first note, is turned on, and the note with the note number “73”, which is the second note, is turned on. The interval until the note is turned on is an example of a single tone generation interval according to the present invention. In the “Arpeggio” shown in FIG. 2C of the present embodiment, the note with the note number “66” as the first note is turned on, and the note with the note number “73” as the second note is turned on. The interval until the note is turned on is an example of a single tone generation interval according to the present invention. In the “delay” shown in FIG. 3 of the present embodiment, the note of the note number “66” that is the first note of the track (1a) in FIG. 3 which is the first track is turned on. The interval until the note number “66”, which is the first note of the track (1b) of FIG. 3 which is the second track, is turned on is an example of the single sound generation interval of the present invention. It is.

  The MIDI data storage area 161 of the storage unit 16 of the present embodiment is an example of the music storage unit of the present invention, and MIDI data is stored in the MIDI data storage area 161 of the storage unit 16 of the present embodiment. It is an example of a memory | storage step. The MIDI data of this embodiment is an example of music data of the present invention. Also, the reference playback speed associated with the MIDI data of this embodiment is an example of the reference speed of the present invention. Further, in the present embodiment, when the deceleration button 10b is pressed three times or more by the remote control terminal 10, -90% of the playback speed specified with respect to the reference playback speed is an example of the predetermined speed of the present invention. is there.

  Further, the adjusted syllable storage area 162 of the storage unit 16 of the present embodiment is an example of the adjusted syllable storage unit of the present invention. The syllable track of the adjustment syllable of this embodiment is an example of the adjustment syllable data of the present invention. The MIDI sequencer 25, the hardware sound source 26, and the software sound source 27 of this embodiment are an example of the reproducing unit of the present invention. The playback speed determined by designating the change of the playback speed by the remote control terminal 10 or the operation unit 18 is an example of the playback speed of the present invention. Each MIDI track constituting the MIDI data of this embodiment is an example of a part of the present invention. The program for executing the reproduction speed change main process, the detection process, and the application process of the music reproduction device 1 stored in the program storage area 163 of the storage unit 16 of the present embodiment is an example of the music reproduction program of the present invention.

  In the present invention, the recognizable speed capable of recognizing an expressed syllable means that a plurality of single notes are reproduced continuously by executing note-on and note-off for a plurality of single notes according to a MIDI track of MIDI data. When a user who listens to the sound produced by the music playback device 1 does not hear a single sound, the notes are turned on and off at intervals that are not heard. Point to.

(Modification)
In the present embodiment, the music reproducing device 1 determines the position of the syllable of the MIDI track by detecting the position where the flag F1 and the flag F2 exist, but the syllable detection method is not limited to this. . For example, note information indicating note information of a specified syllable may be provided as a determination criterion, and a position where the MIDI data includes a note that matches the specified syllable note information serving as a determination criterion may be determined as a syllable. Further, information regarding the syllable type is given to the flag F1 and the flag F2 for determining the syllable position of the MIDI track, and the syllable position and the syllable type can be determined by the flag F1 and the flag F2. Also good.

  In the present embodiment, the reproduction speed for reproducing the MIDI data is a process of reducing the reproduction speed by 30% each time the deceleration button 10b of the remote control terminal 10 is pressed once. The method for changing the reproduction speed for reproducing the MIDI data is not limited to this. For example, the unit for changing the playback speed is set to a predetermined percentage, and the playback speed to be changed may be determined by dividing the reference playback speed by a predetermined divisor. In addition to the method of changing the playback speed for each predetermined change unit, the BPM indicating the playback speed may be changed from one beat unit.

  In addition to the method specified by the user in the present embodiment, the music played back by the music playback device 1 may be a method of automatically specifying a specific music according to a playlist. In this embodiment, the unit for changing the playback speed of the MIDI data may be a method determined for each song in addition to a method for uniformly determining all the songs. In this embodiment, the instruction to change the reproduction speed is given before the reproduction of the MIDI data is started. However, the instruction to change the reproduction speed is issued by the user after the reproduction of the MIDI data is started. It may be broken. In this case, in addition to a method of temporarily stopping the MIDI data being reproduced and applying the reproduction speed after the change, the MIDI data being reproduced is changed from a section scheduled to be reproduced after a predetermined time. The playback method may be a method in which the playback speed is applied.

  In the reproduction speed change main process in the present embodiment, after the user gives an instruction to change the reproduction speed of the MIDI data, the detection process, the process of changing the reproduction speed, and the application process are performed in this order. The order in which the processing for changing the playback speed is performed is not limited to before the application processing. For example, after the application process is performed, a process for changing the playback speed may be performed. At this time, the adjusted syllable storage area of the storage unit stores, for each syllable type, an adjusted syllable track having a shorter single sound generation interval and a larger number of single notes than the syllable track of MIDI data. When the user gives an instruction to change the playback speed of the MIDI data, the syllable of the MIDI track is detected, and instead of the syllable, the adjusted syllable track is applied before the process of changing the playback speed of the music is performed. The Then, processing for changing the playback speed is performed on the MIDI data to which the adjusted syllable track is applied. At this time, in the adjusted syllable storage area, for each syllable type, a plurality of types of adjusted syllable tracks in which the single sound generation interval and the number of single notes are increased or decreased according to the reproduction speed to be changed may be stored. Thereby, in the syllable section of the MIDI track, each sound constituting the syllable can be reproduced without a sense of incongruity at a single sound generation interval corresponding to the changed reproduction speed.

  Moreover, the music reproducing apparatus 1 of the present embodiment assumes that the user uses a musical instrument such as a guitar for practice. However, the music reproducing device 1 of the present embodiment may be utilized even when a person practices a song.

  Further, in the present embodiment, in step S205 and step S208 of the application process, it is determined whether or not there is an empty section in which syllable “roll” and syllable “tril” are to be inserted, respectively. At this time, there is an empty section of one sound or more, but if there is no empty section enough to insert all the sounds of the syllable “roll” and the syllable “tril”, the number of sounds that can be inserted into the empty section A configuration in which only sound is inserted may be used. Further, although there is an empty section of one or more sounds, an empty section in which there is no empty section to the extent that all sounds of the syllable “roll” and the syllable “Trill” are inserted may be configured not to insert a sound.

DESCRIPTION OF SYMBOLS 1 Music player 2 Remote control terminal 12 Control part 16 Storage part 18 Operation part 22 Operation processing part 25 MIDI sequencer 26 Hardware sound source 27 Software sound source 161 MIDI data storage area 162 Adjustment syllable storage area 163 Program storage area

Claims (7)

Including syllable data for generating an expressed syllable composed of a plurality of single notes for performing a predetermined expression, the music data for reproducing the music, and the plurality of recognizable speeds capable of recognizing the expressed syllable A music storage unit that stores adjustment syllable data for reproducing the syllable data at a short single sound generation interval that is equal to or shorter than a recognition single sound generation interval for generating a single sound;
In place of a reference speed that serves as a reference for playing the music data, a speed specifying unit that specifies an arbitrary playback speed;
A speed determination unit that determines whether or not the playback speed specified by the speed specification unit is slower than a recognizable speed capable of recognizing an expressed syllable reproduced from the syllable data;
Among the music data, a syllable detection unit that detects a reproduction position of the syllable data;
A deletion unit that deletes the syllable data at the reproduction position detected by the syllable detection unit when the speed determination unit determines that the reproduction speed is slower than the recognizable speed;
Among the music data, an adjusted syllable data insertion unit that inserts the adjusted syllable data at a reproduction position of the syllable data deleted by the deletion unit;
A playback unit for playing back the music data,
When the specified playback speed is slower than the reference speed and slower than the recognizable speed, the playback unit is configured to generate the recognition single sound generation interval at the playback position of the syllable data detected by the syllable detection unit. A music playback device for playing back the adjusted syllable data inserted by the adjusted syllable data insertion unit at a short single sound generation interval as follows.   The playback unit, during the syllable generation time when the plurality of single notes of the expression syllable is pronounced at the specified playback speed at the playback position of the syllable data detected by the syllable detection unit, The music reproducing apparatus according to claim 1, wherein the adjusted syllable data is repeatedly reproduced a plurality of times at a short single sound generation interval shorter than a recognized single sound generation interval. Among the music data, a type detection unit that detects types of syllables in which a combination of scales of the plurality of single notes represented in the syllable data is different,
The music storage unit stores a plurality of the adjusted syllable data for reproducing the syllables of the plurality of types of syllable data that are reproduced at a short single sound generation interval equal to or shorter than the recognition single sound generation interval,
The playback unit plays back the adjusted syllable data according to the type of syllable detected by the type detection unit when the music data is played back at the specified playback speed. 2. The music reproducing device according to 2. The music to be played back with the music data is composed of a plurality of parts, and the syllable with syllables is composed of a plurality of single sounds having at least one single sound belonging to each of the plurality of parts and having continuous sounding timings. ,
The said reproduction | regeneration part reproduces | regenerates the said adjustment syllable data in the state which maintained the relationship of the pronunciation timing of the several single sound of the several parts which comprise the said expression syllable. The music reproducing device according to 1. A delay determining unit that determines whether or not there is a delay part whose sound generation timing is set to occur late at a predetermined timing with respect to the predetermined part among the plurality of parts constituting the music data; ,
A delay detection unit that detects a delay value indicating a time difference of the delay part with respect to the predetermined part when the delay determination unit determines that the delay part exists;
The adjusted syllable data insertion unit reproduces the syllable data detected by the syllable detection unit with respect to the predetermined part and the delay part when the delay determining unit determines that the delay part exists. Insert the adjusted syllable data at the position,
The playback unit configures the adjusted syllable data of the delay part with respect to the sound generation timings of a plurality of single notes constituting the adjusted syllable data of the predetermined part for the plurality of parts constituting the expressive syllable. The adjusted syllable data of the predetermined part and the delay part is reproduced by delaying the sound generation timing of a plurality of single sounds by a time determined by the delay value detected by the delay detection unit. The music reproducing device according to claim 4 . Including syllable data for generating an expressed syllable composed of a plurality of single notes for performing a predetermined expression, the music data for reproducing the music, and the plurality of recognizable speeds capable of recognizing the expressed syllable A music storage step for storing adjustment syllable data for reproducing the syllable data at a short single sound generation interval equal to or shorter than a recognition single sound generation interval for generating a single sound;
A speed designation step for designating an arbitrary reproduction speed instead of a reference speed serving as a reference for reproducing the music data;
A speed determining step of determining whether or not the playback speed specified in the speed specifying step is slower than a recognizable speed capable of recognizing the expressed syllable reproduced from the syllable data;
Among the music data, a syllable detection step of detecting a reproduction position of the syllable data;
A deletion step of deleting the syllable data at the playback position detected by the syllable detection step when the speed determination step determines that the playback speed is slower than the recognizable speed;
Among the music data, an adjusted syllable data insertion step of inserting the adjusted syllable data at a reproduction position of the syllable data deleted by the deleting step ;
A playback step of playing back the music data,
In the reproduction step, when the designated reproduction speed is slower than the reference speed and further slower than the recognizable speed, the recognition single sound generation interval at the reproduction position of the syllable data detected by the syllable detection step. A music reproducing method, wherein the adjusted syllable data inserted by the adjusted syllable data insertion step is reproduced at a short single sound generation interval as follows. Including syllable data for generating an expressed syllable composed of a plurality of single notes for performing a predetermined expression, the music data for reproducing the music, and the plurality of recognizable speeds capable of recognizing the expressed syllable A computer of a music playback device including a music storage unit for storing adjusted syllable data for playing back the syllable data at a short single sound generation interval shorter than a recognition single sound generation interval for generating a single sound of
A speed designation receiving step for accepting designation of an arbitrary reproduction speed instead of a reference speed serving as a reference for reproducing the music data;
A speed determination step for determining whether the reproduction speed received by the speed designation reception step is slower than a recognizable speed capable of recognizing the expressed syllable reproduced from the syllable data;
Among the music data, a syllable detection step of detecting a reproduction position of the syllable data;
A deletion step of deleting the syllable data at the playback position detected by the syllable detection step when the speed determination step determines that the playback speed is slower than the recognizable speed;
Among the music data, an adjusted syllable data insertion step of inserting the adjusted syllable data at a reproduction position of the syllable data deleted by the deleting step;
Playing back the music data, and
In the reproduction step, when the designated reproduction speed is slower than the reference speed and slower than the recognizable speed, the reproducible speed is the recognizable speed at the reproduction position of the syllable data detected by the syllable detection step. A music reproduction program that reproduces the adjusted syllable data inserted by the adjusted syllable data insertion step at a short single sound generation interval that is shorter than a recognition single sound generation interval for generating the plurality of single sounds.