| Presentation | 2004/12/14 Multi-Channel Estimation of the Power Spectral Density of Noise for Mixtures of Non-Stationary Signals Wolfgang HERBORDT, Satoshi NAKAMURA, Walter KELLERMANN, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The proposed paper deals with the estimation of the power spectral density (PSD) of noise for mixtures of non-stationary wideband signals exploiting sparseness in the time-frequency domain. The proposed method is applied to realize a beam former-plus-post filter structure for noise-robust speech recognition. Experiments with a small-scale 4-sensor microphones array show that interfering speech and music can be suppressed by 13 dB for an average signal-to-noise ratio of 0 dB without impairing the quality of the desired speech signal and without introducing 'musical noise'. This noise suppression is reflected by the improvement of the word accuracy of a connected-digit speech recognizer. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Noise estimation / microphone arrays / beam forming / speech recognition |
| Paper # | NLC2004-76,SP2004-116 |
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| Conference Information | |
| Committee | SP |
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| Conference Date | 2004/12/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Speech (SP) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multi-Channel Estimation of the Power Spectral Density of Noise for Mixtures of Non-Stationary Signals |
| Sub Title (in English) | |
| Keyword(1) | Noise estimation |
| Keyword(2) | microphone arrays |
| Keyword(3) | beam forming |
| Keyword(4) | speech recognition |
| 1st Author's Name | Wolfgang HERBORDT |
| 1st Author's Affiliation | ATR Spoken Language Translation Research Laboratories() |
| 2nd Author's Name | Satoshi NAKAMURA |
| 2nd Author's Affiliation | ATR Spoken Language Translation Research Laboratories |
| 3rd Author's Name | Walter KELLERMANN |
| 3rd Author's Affiliation | Telecommunications Laboratory, University Erlangen-Nuremberg |
| Date | 2004/12/14 |
| Paper # | NLC2004-76,SP2004-116 |
| Volume (vol) | vol.104 |
| Number (no) | 542 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |