| Presentation | 2008-07-18 Relationship between logarithmic kurtosis ratio and degree of musical noise generation on spectral subtraction Yoshihisa UEMURA, Yu TAKAHASHI, Hiroshi SARUWATARI, Kiyohiro SHIKANO, Kazunobu KONDO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose a mathematical metric of the amount of musical noise generated in spectral subtraction. Spectral subtraction often generates a harmful artificial distortion so called musical noise, and sound quality deterioration due to the musical noise is one of the most serious problem on spectral subtraction. Although many methods have been studied to reduce the musical noise, we could not quantitatively evaluate the methods' efficacies because of lack of musical-noise metric. To address the problem, first, we find that degree of musical noise generation is related to unprocessed signal's probability density function (p.d.f.) and the strength of spectral subtraction process. From this relation, we propose a metric of the amount of the generated musical noise based on higher-order statistics, considering p.d.f.'s shape. Finally we show a high correlation between the proposed metric and musical noise by subjective evaluation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Musical noise / Spectral subtraction / Higher-order statistics / Kurtosis / Noise suppression |
| Paper # | EA2008-44 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2008/7/11(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Relationship between logarithmic kurtosis ratio and degree of musical noise generation on spectral subtraction |
| Sub Title (in English) | |
| Keyword(1) | Musical noise |
| Keyword(2) | Spectral subtraction |
| Keyword(3) | Higher-order statistics |
| Keyword(4) | Kurtosis |
| Keyword(5) | Noise suppression |
| 1st Author's Name | Yoshihisa UEMURA |
| 1st Author's Affiliation | Nara Institute of Science and Technology Graduate University() |
| 2nd Author's Name | Yu TAKAHASHI |
| 2nd Author's Affiliation | Nara Institute of Science and Technology Graduate University |
| 3rd Author's Name | Hiroshi SARUWATARI |
| 3rd Author's Affiliation | Nara Institute of Science and Technology Graduate University |
| 4th Author's Name | Kiyohiro SHIKANO |
| 4th Author's Affiliation | Nara Institute of Science and Technology Graduate University |
| 5th Author's Name | Kazunobu KONDO |
| 5th Author's Affiliation | YAMAHA Corp. Center for Advanced Sound Technologies |
| Date | 2008-07-18 |
| Paper # | EA2008-44 |
| Volume (vol) | vol.108 |
| Number (no) | 143 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |