Journal of EEIS
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| 한글제목(Korean Title) |
Reduction of Musical Noise in Spectral Subtraction Method Using Subframe Phase Randomization |
| 영문제목(English Title) |
Reduction of Musical Noise in Spectral Subtraction Method Using Subframe Phase Randomization |
| 저자(Author) |
Jong-Won Seok
Keun-Sung Bae
|
| 원문수록처(Citation) |
VOL 04 NO. 03 PP. 0406 ~ 0410 (1999. 06) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
The Subframe phase randomization method is applied to the spectral subtraction method to reduce the musical noise in nonvoicing region after speech enhancement. The musical noise in the spectral subtraction method is the result of the narrowband tonal components that appearing somewhat periodically in the spectrogram of unvoiced and silence regions. Thus each synthesis frame in nonvoicing region is divided into several subframes to broaden the narrowband spectrum, and then phases of silence and unvoiced regions are randomized to eliminate the tonal components in the spectrum while keeping the shape of the amplitude spectrum. Performance assessments based on visual inspection of spectrogram, objective measure, and informal subjective listening tests demonstrate the superiority of the proposed algorithm. |
| 키워드(Keyword) |
Speech Enhancement
Spectral Subtraction
Musical Noise
Subframe Phase Randomaization
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| 파일첨부 |
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