Speech enhancement using CSS-based array processing

Futoshi Asano*, Satoru Hayamizu

*この研究の対応する著者

研究成果査読

2 被引用数 (Scopus)

抄録

A method for recovering the LPC spectrum from a microphone array input signal corrupted by ambient noise is proposed. This method is based on the CSS (coherent subspace) method, which is designed for DOA (direction of arrival) estimation of broadband array input signals. The noise energy is reduced in the subspace domain by the maximum likelihood method. To enhance the performance of noise reduction, elimination of noise-dominant subspace using projection is further employed, which is effective when the SNR is low and classification of noise and signals in the subspace domain is difficult. The results of the simulation show that some small formants, which cannot be estimated by the conventional delay-and-sum beamformer, were well estimated by the proposed method.

本文言語English
ページ(範囲)1191-1194
ページ数4
ジャーナルICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2
出版ステータスPublished - 1997
外部発表はい
イベントProceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP. Part 1 (of 5) - Munich, Ger
継続期間: 1997 4 211997 4 24

ASJC Scopus subject areas

  • ソフトウェア
  • 信号処理
  • 電子工学および電気工学

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