시간-주파수 영역에서 음성/잡음 우세 결정에 의한 새로운 잡음처리 A Novel Speech Enhancement Based on Speech/Noise-dominant Decision in Time-frequency Domain

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A novel method to reduce additive non-stationary noise is proposed. The method requires neither the information about noise nor the estimate of the noise statistics from any pause regions. The enhancement is performed on a band-by-band basis for each time frame. Based on both the decision on whether a particular band in a frame is speech or noise dominant and the masking property of the human auditory system, an appropriate amount of noise is reduced using spectral subtraction. The proposed method was tested on various noisy conditions (car noise, Fl6 noise, white Gaussian noise, pink noise, tank noise and babble noise) and on the basis of comparing segmental SNR with spectral subtraction method and visually inspecting the enhanced spectrograms and listening to the enhanced speech, the method was able to effectively reduce various noise while minimizing distortion to speech.
Publisher
한국음향학회
Issue Date
2001-04
Language
Korean
Citation

한국음향학회지, v.20, no.3, pp.48 - 55

ISSN
1225-4428
URI
http://hdl.handle.net/10203/85906
Appears in Collection
EE-Journal Papers(저널논문)
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