Generalized amplitude interpolation by β-divergence for virtual microphone array

Hiroki Katahira, Nobutaka Ono, Shigeki Miyabe, Takeshi Yamada, Shoji Makino

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

In this paper, we present a generalization of the virtual microphone array we previously proposed to increase the microphone elements by nonlinear interpolation. In the previous work, we generated a virtual observation from two actual microphones by an interpolation in the logarithmic domain. This corresponds to a linear interpolation of the phase and the geometric mean of the amplitude. In this paper, we generalize this interpolation using a linear interpolation of the phase and a nonlinear interpolation of the amplitude with adjustable nonlinearity based on β-divergence. Improvement of the array signal processing performance is obtained by appropriate tuning of the parameter β We evaluate the improvement in speech enhancement using a maximum SNR beamformer.

本文言語English
ホスト出版物のタイトル2014 14th International Workshop on Acoustic Signal Enhancement, IWAENC 2014
出版社Institute of Electrical and Electronics Engineers Inc.
ページ149-153
ページ数5
ISBN(電子版)9781479968084
DOI
出版ステータスPublished - 2014 11月 11
外部発表はい
イベント2014 14th International Workshop on Acoustic Signal Enhancement, IWAENC 2014 - Juan-les-Pins, France
継続期間: 2014 9月 82014 9月 11

出版物シリーズ

名前2014 14th International Workshop on Acoustic Signal Enhancement, IWAENC 2014

Conference

Conference2014 14th International Workshop on Acoustic Signal Enhancement, IWAENC 2014
国/地域France
CityJuan-les-Pins
Period14/9/814/9/11

ASJC Scopus subject areas

  • 信号処理
  • ソフトウェア
  • 音響学および超音波学
  • コンピュータ ネットワークおよび通信

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