| Presentation | 1994/10/13 A study on a robust speech coding method against channel errors Yasuhiro Kato, Minoru Kohata, Tasuku Takagi, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A new error detecting and correcting method is proposed so as to minimize a redundancy caused by error correcting codes.This method utilizes correlations between frame power and other speech parameters in a CELP type coding.In an ideal linear prediction coding,there are no correlations between these parameters.But in practice,the non-flatness of the frequency characteristics of the excitation waves and the finite frame length causes the correlations.Due to the correlations,bit errors in the speech parameters cause fluctuations of frame power of synthesized speech, then enable us to detect and correct the bit errors.Some experiments were carried out on the condition that one bit error occurs per frame.As a result,the error detection rates were more than 95 percent after each codebook was remapped so as to maximize the mean distance between all adjacent codewords. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | error detction / error correction / CELP / correlation / remapping |
| Paper # | SP94-48 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 1994/10/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
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| Paper Information | |
| Registration To | Speech (SP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study on a robust speech coding method against channel errors |
| Sub Title (in English) | |
| Keyword(1) | error detction |
| Keyword(2) | error correction |
| Keyword(3) | CELP |
| Keyword(4) | correlation |
| Keyword(5) | remapping |
| 1st Author's Name | Yasuhiro Kato |
| 1st Author's Affiliation | Faculty of Engineering,Tohoku University() |
| 2nd Author's Name | Minoru Kohata |
| 2nd Author's Affiliation | Faculty of Engineering,Tohoku University |
| 3rd Author's Name | Tasuku Takagi |
| 3rd Author's Affiliation | Faculty of Engineering,Tohoku University |
| Date | 1994/10/13 |
| Paper # | SP94-48 |
| Volume (vol) | vol.94 |
| Number (no) | 271 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |