| Presentation | 2007/6/8 Speech Noise Reduction System Based on Regeneration of Speech Signal Using Sinusoidal Waves Isao NAKANISHI, Ryotaro OOHASHI, Yuudai NAGATA, Yoshio ITOH, Yutaka FUKUI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have proposed the speech noise reduction system based on a modified discrete Fourier transform (MDFT). The MDFT decomposes a noise added speech signal into frequency signals. On each decomposed frequenct signal, signal and noise spectra (levels) are detected in real-time using signal and noise level detectors, respectively. By subtracting the noise spectrum (level) from the signal spectrum (level), a speech level is estimated and then it is multiplied to the decomposed frequency signal. However, the decomposed frequency signal contains a noise element; therefore, it is not suitable for reproducing the speech signal. In this paper, we propose to use a white signal, which is decomposed into sinusoidal waves by the MDFT. This is also effective on generating phase relations between the signals. The proposed function of reproducing sinusoidal signals is embedded in the speech noise reduction system and then the effectiveness is evaluated through computer simulations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | speech noise reduction / white signal / regeneration of sinusoidal waves / modified descrete Fourier transform |
| Paper # | SIS2007-17 |
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| Committee | SIS |
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| Conference Date | 2007/6/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Smart Info-Media Systems (SIS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Speech Noise Reduction System Based on Regeneration of Speech Signal Using Sinusoidal Waves |
| Sub Title (in English) | |
| Keyword(1) | speech noise reduction |
| Keyword(2) | white signal |
| Keyword(3) | regeneration of sinusoidal waves |
| Keyword(4) | modified descrete Fourier transform |
| 1st Author's Name | Isao NAKANISHI |
| 1st Author's Affiliation | Faculty of Engineering, Tottori University() |
| 2nd Author's Name | Ryotaro OOHASHI |
| 2nd Author's Affiliation | Faculty of Engineering, Tottori University |
| 3rd Author's Name | Yuudai NAGATA |
| 3rd Author's Affiliation | Faculty of Engineering, Tottori University |
| 4th Author's Name | Yoshio ITOH |
| 4th Author's Affiliation | Faculty of Engineering, Tottori University |
| 5th Author's Name | Yutaka FUKUI |
| 5th Author's Affiliation | Faculty of Engineering, Tottori University |
| Date | 2007/6/8 |
| Paper # | SIS2007-17 |
| Volume (vol) | vol.107 |
| Number (no) | 94 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |