| Presentation | 2006-07-14 Multichannel Audio Signal Compressive Coding Method with Independent Component Analysis Tadashi MIHASHI, Tomoya TAKATANI, Shigeki MIYABE, Yoshimitsu MORI, Hiroshi SARUWATARI, Kiyohiro SHIKANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, the use of multichannel audio contents is widely spreading. Consequently, the transmission quantity is increasing, and compression technology to reduce it is requested. A compression method exploiting the sparsness of sound source signals has a problem that it distorts the signals. It is because that there is no sparsness in the mixed signals consisting of two or more sound source signals. Therefore, we propose the method for audio signal compression using independent component analysis (ICA); ICA separates mixed signals into source signals, and clarifies sparsness among signals. Furthermore, we propose a mechanism to detect time-frequency grids where sparsness is not satisfied, and for the detected grids, we transmit multichannel signals to prevent the degradation. Experimental result shows that the proposed method can compress mixed audio signals with higher quality than conventional method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | multichannel audio signal / compressive coding / blind source separation / independent component analysis |
| Paper # | EA2006-28 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2006/7/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multichannel Audio Signal Compressive Coding Method with Independent Component Analysis |
| Sub Title (in English) | |
| Keyword(1) | multichannel audio signal |
| Keyword(2) | compressive coding |
| Keyword(3) | blind source separation |
| Keyword(4) | independent component analysis |
| 1st Author's Name | Tadashi MIHASHI |
| 1st Author's Affiliation | Nara Institute of Science and Technology() |
| 2nd Author's Name | Tomoya TAKATANI |
| 2nd Author's Affiliation | Nara Institute of Science and Technology |
| 3rd Author's Name | Shigeki MIYABE |
| 3rd Author's Affiliation | Nara Institute of Science and Technology |
| 4th Author's Name | Yoshimitsu MORI |
| 4th Author's Affiliation | Nara Institute of Science and Technology |
| 5th Author's Name | Hiroshi SARUWATARI |
| 5th Author's Affiliation | Nara Institute of Science and Technology |
| 6th Author's Name | Kiyohiro SHIKANO |
| 6th Author's Affiliation | Nara Institute of Science and Technology |
| Date | 2006-07-14 |
| Paper # | EA2006-28 |
| Volume (vol) | vol.106 |
| Number (no) | 160 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |