| Presentation | 2003/1/9 Audio Coding for Digital Musical Instruments Masatsugu OKAZAKI, Kazuhisa OKAMURA, Takao KOBAYASHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper discusses audio coding algorithms for digital musical instruments. There are over about 50-channel decoder on an LSI device used in musical instruments, TV-game machines, and recent cell-phones. Since hardware resources per channel on the decoder are restricted, a simple algorithm such as ADPCM is commonly used. We investigated several frequency analysis/synthesis and adapting methods for digital musical instruments, and found that Adaptive Predictive Coding(APC) is efficient for reducing the amount of memory. An APC codec was implemented and a subjective evaluation for 5musical instruments sounds was performed. It is found that the quality of APC using predictive filter based on the covariance method is comparable with that of ADPCM used in G722, while RAM size required for decoder is reduced to about 30%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | digital musical instruments / digital circuit / audio coding / frequency analysis-synthesis |
| Paper # | DSP2002-168,SAT2002-118,RCS2002-237 |
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| Conference Information | |
| Committee | DSP |
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| Conference Date | 2003/1/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Digital Signal Processing (DSP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Audio Coding for Digital Musical Instruments |
| Sub Title (in English) | |
| Keyword(1) | digital musical instruments |
| Keyword(2) | digital circuit |
| Keyword(3) | audio coding |
| Keyword(4) | frequency analysis-synthesis |
| 1st Author's Name | Masatsugu OKAZAKI |
| 1st Author's Affiliation | Pro AudioDigital Musical Instruments Division,YAMAHA corporation:Interdisciplinary Graduate School of Science and Engineering,Tokyo Institute of Technology() |
| 2nd Author's Name | Kazuhisa OKAMURA |
| 2nd Author's Affiliation | Pro AudioDigital Musical Instruments Division,YAMAHA corporation |
| 3rd Author's Name | Takao KOBAYASHI |
| 3rd Author's Affiliation | Interdisciplinary Graduate School of Science and Engineering,Tokyo Institute of Technology |
| Date | 2003/1/9 |
| Paper # | DSP2002-168,SAT2002-118,RCS2002-237 |
| Volume (vol) | vol.102 |
| Number (no) | 544 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |