| Presentation | 2021-07-15 ［招待講演］BEATWIZ、その実践的な楽曲解析 , |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In-game Music analysis must be implemented to execute ultra-fast while maintaining high accuracy. For Beat tracker, I considered that the rhythm is as a very low frequency component and set up very large window buffer (VLW). The application used this method is available to realize less than 1 second / song analysis time, 0.01bpm accuracy, 90+% correct rate and only 8 samples (0.181ms) average error of downbeat position. For Chord tracker, I optimized CQT performance with exact chord and modal music theory. So it is available to analyze key signature and modal with 90+% correct rate. Also it is available to output chord names including triad, 4th, 7th and 9th tension chords with 80+% correct rate. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Music Analysis / Beat Tracking / Chord Tracking / Key Signature Tracking / Modal Tracking / Constant-Q Transform |
| Paper # | EA2021-8 |
| Date of Issue | 2021-07-08 (EA) |
| Conference Information | |
| Committee | EA / ASJ-H |
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| Conference Date | 2021/7/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Psychological and Physiological Acoustics, Speech, Musical Acoustics, Education in Acoustics, and Related Topics |
| Chair | Yoshinobu Kajikawa(Kansai Univ.) |
| Vice Chair | Kenichi Furuya(Oita Univ.) / Shoichi Koyama(Univ. of Tokyo) |
| Secretary | Kenichi Furuya(NTT) / Shoichi Koyama(RitsumeikanUniv.) |
| Assistant | Yukou Wakabayashi(Tokyo Metropolitan Univ.) / Tatsuya Komatsu(LINE) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Auditory Research Meeting |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | |
| Sub Title (in English) | * |
| Keyword(1) | Music Analysis |
| Keyword(2) | Beat Tracking |
| Keyword(3) | Chord Tracking |
| Keyword(4) | Key Signature Tracking |
| Keyword(5) | Modal Tracking |
| Keyword(6) | Constant-Q Transform |
| 1st Author's Name | |
| 1st Author's Affiliation | *(*) |
| Date | 2021-07-15 |
| Paper # | EA2021-8 |
| Volume (vol) | vol.121 |
| Number (no) | EA-112 |
| Page | pp.pp.40-45(EA), |
| #Pages | 6 |
| Date of Issue | 2021-07-08 (EA) |