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https://hdl.handle.net/10119/9966
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| Title: | An MTF-based Blind Restoration Method for Improving Intelligibility of Bone-conducted Speech |
| Authors: | Kinugasa, Kota
Unoki, Masashi
Akagi, Masato |
| Issue Date: | 2009-03-01 |
| Publisher: | 2009 International Workshop on Nonlinear Circuits and Signal Processing |
| Magazine name: | 2009 International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09) |
| Start page: | 105 |
| End page: | 108 |
| Abstract: | Bone-conducted (BC) speech is useful for speech communications in extremely noisy environments. However, sound quality and intelligibility of BC speech are very poor and low. In this paper, we propose a blind restoration method for improving BC speech based on the concept of modulationtransfer function (MTF). We first investigate the relationship between the power envelope of air-conducted (AC) and BC speech signals by analyzing AC/BC database. We then model these relations by fitting some models to the MTF derived from the database. The best-fitted model has two parameters.One is the gain factor, and another is the attenuation factor. We then propose a method for determining the parameters of model without the AC speech. We finally evaluate the proposedmethod using SNR, correlation, RMS of MTF, PESQ,and LSD. As the results, we showed the proposed method is effective for blind BC speech restoration. |
| Rights: | This material is posted here with permission of the Research Institute of Signal Processing Japan. Kota Kinugasa, Masashi Unoki, and Masato Akagi, 2009 International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09), 2009, pp.105-108. |
| URI: | https://hdl.handle.net/10119/9966 |
| Material Type: | publisher |
| Appears in Collections: | b11-1. 会議発表論文・発表資料 (Conference Papers)
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| NCSP2009_Kinugasa.pdf | | 255Kb | Adobe PDF | View/Open |
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