| Presentation | 2008-12-10 Study on Spectro-Temporal Features Based on Gradient Histograms Takashi MUROI, Tetsuya TAKIGUCHI, Yasuo ARIKI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a novel feature extraction method for speech recognition based on gradient features on 2-D time-frequency matrix. Widely used MFCC features lack temporal dynamics and delta-MFCC is an indirect expression of temporal frequency changes. To extract the temporal dynamics more directly, local gradient features are measured in the region around reference positions. This method was originally proposed as HOG (Histograms of Oriented Gradients) and applied to human body detection in image recognition. In this paper, we develop it into gradient-based acoustic features in speech recognition. The proposed feature was evaluated on a phoneme recognition task and showed the significant improvement for clean speech and even for the noisy speech when combined with MFCC. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | gradient histograms / spectro-temporal features / phoneme recognition |
| Paper # | NLC2008-51,SP2008-106 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2008/12/2(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Natural Language Understanding and Models of Communication (NLC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on Spectro-Temporal Features Based on Gradient Histograms |
| Sub Title (in English) | |
| Keyword(1) | gradient histograms |
| Keyword(2) | spectro-temporal features |
| Keyword(3) | phoneme recognition |
| 1st Author's Name | Takashi MUROI |
| 1st Author's Affiliation | Graduate School of Engineering, Kobe University() |
| 2nd Author's Name | Tetsuya TAKIGUCHI |
| 2nd Author's Affiliation | Graduate School of Engineering, Kobe University |
| 3rd Author's Name | Yasuo ARIKI |
| 3rd Author's Affiliation | Graduate School of Engineering, Kobe University |
| Date | 2008-12-10 |
| Paper # | NLC2008-51,SP2008-106 |
| Volume (vol) | vol.108 |
| Number (no) | 337 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |