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http://dx.doi.org/10.13067/JKIECS.2013.8.4.555

Subband Based Spectrum Subtraction Algorithm  

Choi, Jae-Seung (신라대학교 전자공학과)
Publication Information
The Journal of the Korea institute of electronic communication sciences / v.8, no.4, 2013 , pp. 555-560 More about this Journal
Abstract
This paper first proposes a classification algorithm which detects a voiced, unvoiced, and silence signal using distance measure, logarithm power and root mean square methods at each frame, then a spectrum subtraction algorithm based on a subband filter. The proposed algorithm subtracts spectrums of white noise and street noise from noisy signal based on the subband filter at each frame. In this experiment, experimental results of the proposed spectrum subtraction algorithm demonstrate using the speech and noise data of Aurora-2 database. Based on measuring the speech-to-noise ratio (SNR), experiments confirm that the proposed algorithm is effective for the speech by contaminated the noise. From the experiments, the improvement in the output SNR values was approximately 2.1 dB and 1.91 dB better for white noise and street noise, respectively.
Keywords
Subband; distance measure; classification algorithm; spectrum subtraction;
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Times Cited By KSCI : 6  (Citation Analysis)
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