Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2003.11a
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- Pages.49-52
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- 2003
Parts-based Feature Extraction of Speech Spectrum Using Non-Negative Matrix Factorization
Non-Negative Matrix Factorization을 이용한 음성 스펙트럼의 부분 특징 추출
Abstract
In this paper, we propose new speech feature parameter using NMf(Non-Negative Matrix Factorization). NMF can represent multi-dimensional data based on effective dimensional reduction through matrix factorization under the non-negativity constraint, and reduced data present parts-based features of input data. In this paper, we verify about usefulness of NMF algorithm for speech feature extraction applying feature parameter that is got using NMF in Mel-scaled filter bank output. According to recognition experiment result, we could confirm that proposal feature parameter is superior in recognition performance than MFCC(mel frequency cepstral coefficient) that is used generally.
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