| Presentation | 2002/12/12 A Construction of Noise Reduction Filter by Neural Network : Application for Digital Hearing Aid Appliance as Preprocessing Toshie NAMIKI, Yuki FURUMOTO, Hiroki YOSHIMURA, Tadaaki SHIMIZU, Naoki ISU, Kazuhiro SUGATA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We proposed an adaptive noise reduction filter composed of Cascaded Sandglass-type Neural Network (CSNNRF) to develop a hearing aid appliance. It was known that Sandglass-type Neural Network (SNN) has property of processing signals which is equivalent to KL transformation-KL inverse transformation after learning. First, we calculated the expected value of the speech element from KL transformation element of input signal. We decided coefficients in proportional to the expected value and multiplied them to the output of each stage of CSNNRF. Next, the sound volume was adjusted by multiplying amplification rate to the total sum of output signals of CSNNRF. Here,amplification rate was determined as the inverse of the sound volume. Finally in order to improve S/N ratio,the number of stages in CSNNRF was altered adaptively. As a result of the noise reduction experiment, it was shown that the noise was reduced adaptively and the sound volume was adjusted appropriately. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Sandglass-type Neural network / Noise reduction adaptive filter / Digital hearing aid appliance |
| Paper # | NLC2002-61 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2002/12/12(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 | 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) | A Construction of Noise Reduction Filter by Neural Network : Application for Digital Hearing Aid Appliance as Preprocessing |
| Sub Title (in English) | |
| Keyword(1) | Sandglass-type Neural network |
| Keyword(2) | Noise reduction adaptive filter |
| Keyword(3) | Digital hearing aid appliance |
| 1st Author's Name | Toshie NAMIKI |
| 1st Author's Affiliation | Faculty of Engineering, Tottori University() |
| 2nd Author's Name | Yuki FURUMOTO |
| 2nd Author's Affiliation | Faculty of Engineering, Tottori University |
| 3rd Author's Name | Hiroki YOSHIMURA |
| 3rd Author's Affiliation | Faculty of Engineering, Tottori University |
| 4th Author's Name | Tadaaki SHIMIZU |
| 4th Author's Affiliation | Faculty of Engineering, Tottori University |
| 5th Author's Name | Naoki ISU |
| 5th Author's Affiliation | Faculty of Engineering, Tottori University |
| 6th Author's Name | Kazuhiro SUGATA |
| 6th Author's Affiliation | Faculty of Engineering, Tottori University |
| Date | 2002/12/12 |
| Paper # | NLC2002-61 |
| Volume (vol) | vol.102 |
| Number (no) | 527 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |