WO2019053766A1 - Dispositif et programme d'analyse de chanson - Google Patents

Dispositif et programme d'analyse de chanson Download PDF

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Publication number
WO2019053766A1
WO2019053766A1 PCT/JP2017/032803 JP2017032803W WO2019053766A1 WO 2019053766 A1 WO2019053766 A1 WO 2019053766A1 JP 2017032803 W JP2017032803 W JP 2017032803W WO 2019053766 A1 WO2019053766 A1 WO 2019053766A1
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WO
WIPO (PCT)
Prior art keywords
beat position
music
beat
unit
music data
Prior art date
Application number
PCT/JP2017/032803
Other languages
English (en)
Japanese (ja)
Inventor
吉野　肇
Original Assignee
Ｐｉｏｎｅｅｒ ＤＪ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｐｉｏｎｅｅｒ ＤＪ株式会社 filed Critical Ｐｉｏｎｅｅｒ ＤＪ株式会社
Priority to PCT/JP2017/032803 priority Critical patent/WO2019053766A1/fr
Priority to JP2019541505A priority patent/JP6842558B2/ja
Publication of WO2019053766A1 publication Critical patent/WO2019053766A1/fr

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10G—REPRESENTATION OF MUSIC; RECORDING MUSIC IN NOTATION FORM; ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR, e.g. SUPPORTS
    • G10G1/00—Means for the representation of music
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination

Definitions

  • the present invention relates to a music analysis device and a music analysis program.
  • Patent Document 1 discloses a technique for setting a variation amount at the time of sound generation of a note in accordance with a random number generated in the probability distribution of variance according to the position of each note in the target music. According to the technique described in Patent Document 1, it is possible to set an effect of being able to set a natural variation amount that matches the actual tendency for each note of the music.
  • club music and dance music are played at a DJ venue such as a club or disco, and a listener often dances in accordance with the performance of the music, and the lighting effect in the DJ venue is performed according to the performance of the music.
  • a DJ venue such as a club or disco
  • the lighting effect in the DJ venue is performed according to the performance of the music.
  • flashy lighting effects since flashy lighting effects are performed, it is demanded to perform appropriate lighting effects according to the music genre. Therefore, if it is possible to quickly determine whether the genre of music data to be played is club music, dance music or the like, it is possible to perform optimal lighting effects accordingly.
  • An object of the present invention is to provide a music analysis device and a music analysis program capable of appropriately discriminating club music, dance music and the like.
  • the music analysis device of the present invention is A beat position acquisition unit that detects a beat position of music data or acquires a beat position detected by an external device; A uniform beat position calculation unit that calculates a uniform beat position obtained by dividing the music data at a constant beat interval; A beat position comparison unit that compares the beat position obtained by the beat position obtaining unit and the even beat position calculated by the even beat position calculation unit; A genre determination unit that determines a genre of the music data based on the comparison result of the beat position comparison unit; It is characterized by having.
  • the music analysis program of the present invention is Computer, A beat position acquisition unit that detects a beat position of music data or acquires a beat position detected by an external device; A uniform beat position calculation unit that calculates a uniform beat position obtained by dividing the music data at a constant beat interval; A beat position comparison unit that compares the beat position obtained by the beat position obtaining unit and the even beat position calculated by the even beat position calculation unit; A genre determination unit that determines a genre of the music data based on the comparison result of the beat position comparison unit; It is characterized in that it functions as
  • FIG. 1 is a block diagram showing a configuration of a music analysis device according to an embodiment of the present invention.
  • the beat position of the music data SD played by the performer is the time with respect to the equal beat position where the music data SD is equally divided by the computer clock etc. It fluctuates continuously with the passage of time.
  • the beat position of the music data SD in the case of the 11th bar, is substantially the same as the even beat position with respect to the even beat position. It is late for.
  • the beat position of the music data SD becomes faster than the even beat position.
  • the beat position of the music data SD can be set, it is completely the same as the even beat position, or a constant deviation occurs regardless of the in-song position (position in the music).
  • the present invention determines a music genre such as club music or dance music by comparing how much the beat position of the music data SD is shifted with respect to the even beat position.
  • FIG. 2 shows the music analysis device 1 according to the embodiment of the present invention.
  • the music analysis device 1 is configured as a music analysis program executed on a computer provided with a CPU 2 and a storage device 3 such as a hard disk, and the music analysis device 1 is connected to a lighting control unit 4 for controlling the lighting device 5.
  • Ru The music analysis device 1 determines the music genre of the input music data SD, and outputs the illumination mode based on the determined music genre of the music data SD.
  • the illumination control unit 4 performs illumination control of the illumination device 5 based on the illumination mode output from the music analysis device 1, and executes illumination effects according to the music genre.
  • the music data SD is composed of digital data such as WAV and MP3 and the beat position of the music is analyzed by FFT analysis or the like.
  • the music data SD may be music data reproduced by a music reproduction device such as a CD player or a DVD player taken into the music analysis device 1 by a USB cable or the like, or digital music data stored in the storage device 3 It may be a regenerated one.
  • the music analysis device 1 includes a beat position acquisition unit 21 as a music analysis program executed on the CPU 2, a uniform beat position calculation unit 22, a beat position comparison unit 23, a genre determination unit 24, and an illumination mode setting unit 25.
  • the beat position acquisition unit 21 acquires the beat position of the music data SD. Specifically, the beat position acquisition unit 21 detects at what sample in the sixteenth note slot the sound generation position of the bass drum in the music data SD is present. For example, as shown in FIG. 3, the beat position acquisition unit 21 detects the rising position of the bass drum waveform, and depending on where in the beat interval of the sixteenth note obtained by dividing one beat into four, Get beat position.
  • the beat position acquisition unit 21 may detect the beat position of the music data SD by itself or may be configured to obtain the beat position of the music data SD detected in advance by an external device.
  • the uniform beat position calculation unit 22 calculates a uniform beat position obtained by dividing the music data SD at a constant beat interval. Specifically, the even beat position calculation unit 22 divides the music data SD at a beat interval of sixteenth notes to calculate the even beat position.
  • the beat position comparison unit 23 compares the beat position of the music data SD acquired by the beat position acquisition unit 21 with the equalized beat position calculated by the equalized beat position calculation unit 22 and detects the mutual deviation. Specifically, the beat position comparison unit 23 detects the beat position of the music data SD with respect to the equal beat position divided by the beat interval of the sixteenth note, and detects the detected number as a shift sample of the position within the 16 minutes slot. Count as a number.
  • the beat position comparison unit 23 since the beat position comparison unit 23 tends to increase the number of shifted samples from the 25th bar to the 40th bar, the beat position of the music data SD with respect to the even beat position. Is determined to be in the late direction (the time change of the deviation has a positive slope).
  • the beat position comparison unit 23 shifts the beat position of the music data SD to the equal beat position from the tendency that the beat position of the music data SD shifts from the 52nd bar to the 66th bar and the number of samples decreases. Is determined to be in the direction in which the
  • the genre determination unit 24 determines the genre of music data based on the comparison result of the beat position comparison unit 23. Specifically, as shown in FIG. 4, the genre determination unit 24 shifts the beat position of the music data SD with respect to the even beat position with a tendency of 4 bars or more (temporarily shifts). If the tendency (slope) of the change is not constant, it is determined that the music is not club music or dance music. On the other hand, even if the genre determination unit 24 determines that the beat position of the music data SD is the same (no shift) or change (shift) with respect to the even beat position, the change is constant or the change inclination is constant. Then, it is determined that it is club music and dance music.
  • the illumination mode setting unit 25 sets the illumination mode based on the genre of the music data SD determined by the genre determination unit 24. In the present embodiment, the illumination mode for club music and dance music and the illumination mode other than that are set, and the illumination mode setting unit 25 causes the genre determination unit 24 to use the music data SD for club music and dance music. If it is determined that there is, set the lighting mode for club music and dance music.
  • the illumination control unit 4 outputs an illumination control command according to the illumination mode to the illumination device 5, and the illumination effect according to the music genre is executed.
  • the beat position acquisition unit 21 obtains the beat position of the music data SD (step S1).
  • the even beat position calculation unit 22 divides the beat position at the beginning of the music and the last beat position of the music in the music data SD at a beat interval of a sixteenth note to calculate the even beat position (step S2).
  • the beat position comparison unit 23 determines whether there is a deviation between the beat position of the music data SD and the even beat position (step S3). If there is a deviation, the beat position comparison unit 23 determines whether the temporal change (inclination) of the deviation is constant (step S4). When the time change (inclination) of the shift is constant, the genre determination unit 24 determines that the beat position of the music data SD is erroneous detection, and determines that the music genre of the music data SD is club music or dance music. (Step S5).
  • the genre judging section 24 judges that the music genre of the music data SD is not club music or dance music (step S6). On the other hand, if it is determined in step S3 that there is no deviation between the beat position and the even beat position of the music data SD, the genre determination unit 24 determines that the music genre of the music data SD is club music or dance music. (Step S5).
  • the illumination mode setting unit 25 sets the illumination mode based on the determination result of the genre determination unit 24 (step S7).
  • the set illumination mode is output to the illumination control unit 4, and the illumination control unit 4 performs illumination control of the illumination device 5 according to the set illumination mode.
  • the beat position comparison unit 23 determines by the beat position comparison unit 23 whether or not the temporal change (inclination) of the deviation between the beat position and the even beat position of the music data SD is constant.
  • Music genre such as club music and dance music can be determined immediately. Therefore, the illumination control according to the music genre of the music data SD can be quickly performed.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Auxiliary Devices For Music (AREA)

Abstract

L'invention concerne un dispositif d'analyse de chanson (1) comprenant : une unité d'acquisition d'emplacements de battements (21) qui détecte des emplacements de battements dans des données de chanson (SD) ou acquiert des emplacements de battements qui ont été détectés à l'aide d'un dispositif externe ; une unité de calcul d'emplacement de battements pairs (22) qui calcule des emplacements de battement pairs qui sont obtenus en divisant les données de chanson (SD) selon un intervalle de battement constant ; une unité de comparaison d'emplacements de battements (23) qui compare les emplacements de battements acquis par l'unité d'acquisition d'emplacements de battements (21) avec les emplacements de battements pairs calculés par l'unité de calcul d'emplacements de battements pairs (22) ; et une unité de détermination de genre (24) qui détermine le genre des données de chanson (SD) d'après le résultat de comparaison provenant de l'unité de comparaison d'emplacements de battements (23).
PCT/JP2017/032803 2017-09-12 2017-09-12 Dispositif et programme d'analyse de chanson WO2019053766A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2017/032803 WO2019053766A1 (fr) 2017-09-12 2017-09-12 Dispositif et programme d'analyse de chanson
JP2019541505A JP6842558B2 (ja) 2017-09-12 2017-09-12 楽曲解析装置および楽曲解析プログラム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/032803 WO2019053766A1 (fr) 2017-09-12 2017-09-12 Dispositif et programme d'analyse de chanson

Publications (1)

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WO2019053766A1 true WO2019053766A1 (fr) 2019-03-21

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JP (1) JP6842558B2 (fr)
WO (1) WO2019053766A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024034118A1 (fr) * 2022-08-12 2024-02-15 ＡｌｐｈａＴｈｅｔａ株式会社 Dispositif et procédé de traitement de signal audio, et programme associé
WO2024034115A1 (fr) * 2022-08-12 2024-02-15 ＡｌｐｈａＴｈｅｔａ株式会社 Dispositif de traitement de signaux audio, procédé de traitement de signaux audio, et programme

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005274708A (ja) * 2004-03-23 2005-10-06 Sony Corp 信号処理装置および信号処理方法、プログラム、並びに記録媒体
WO2015114216A2 (fr) * 2014-01-31 2015-08-06 Nokia Corporation Analyse de signaux audio

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005274708A (ja) * 2004-03-23 2005-10-06 Sony Corp 信号処理装置および信号処理方法、プログラム、並びに記録媒体
WO2015114216A2 (fr) * 2014-01-31 2015-08-06 Nokia Corporation Analyse de signaux audio

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024034118A1 (fr) * 2022-08-12 2024-02-15 ＡｌｐｈａＴｈｅｔａ株式会社 Dispositif et procédé de traitement de signal audio, et programme associé
WO2024034115A1 (fr) * 2022-08-12 2024-02-15 ＡｌｐｈａＴｈｅｔａ株式会社 Dispositif de traitement de signaux audio, procédé de traitement de signaux audio, et programme

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JP6842558B2 (ja) 2021-03-17
JPWO2019053766A1 (ja) 2020-10-08

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