| Presentation | 2009-06-26 An MTF-based method for blindly restoring bone-conducted speech Kota KINUGASA, Masashi UNOKI, Masato AKAGI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Bone-conducted (BC) speech is more advantageous for speech communication in extremely noisy environments because of its stability against surrounding noise. However, both the sound quality and intelligibility of BC speech are very poor so that restoring BC speech is both an important task. We propose a method of blind restoration for improving BC speech based on the concept of the modulation transfer function (MTF). We investigated the relationship between air-conducted (AC) and BC speech signals by analyzing an AC/BC speech database using several measures for evaluation. We then modeled these relations between the power envelopes of AC and BC speech signals as MTF. We propose a method of determining the parameters of the MTF-based model without AC speech. Log-spectrum distortion (LSD) and speech intelligibility weighted LSD were used to evaluate the improvements in intelligibility, which are useful for human-hearing systems. The distances based on LP coefficients and mel-frequency cepstral coefficients were used to evaluate the improvements in cepstral distances that are useful for ASR systems. The results revealed that the new model can adequately improve the intelligibility of BC speech. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Bone-conducted speech / Air-conducted speech / Modulation transfer function / Power envelope inverse filtering / Blind restoration |
| Paper # | EA2009-31 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2009/6/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | An MTF-based method for blindly restoring bone-conducted speech |
| Sub Title (in English) | |
| Keyword(1) | Bone-conducted speech |
| Keyword(2) | Air-conducted speech |
| Keyword(3) | Modulation transfer function |
| Keyword(4) | Power envelope inverse filtering |
| Keyword(5) | Blind restoration |
| 1st Author's Name | Kota KINUGASA |
| 1st Author's Affiliation | School of Information Science, Japan Advanced Institute of Science and Technology() |
| 2nd Author's Name | Masashi UNOKI |
| 2nd Author's Affiliation | School of Information Science, Japan Advanced Institute of Science and Technology |
| 3rd Author's Name | Masato AKAGI |
| 3rd Author's Affiliation | School of Information Science, Japan Advanced Institute of Science and Technology |
| Date | 2009-06-26 |
| Paper # | EA2009-31 |
| Volume (vol) | vol.109 |
| Number (no) | 100 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |