Wavelength proportional arrangement of virtual microphones based on interpolation/extrapolation for underdetermined speech enhancement

Ryoga Jinzai, Kouei Yamaoka, Mitsuo Matsumoto, Shoji Makino, Takeshi Yamada

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

We previously proposed the virtual microphone technique to improve the speech enhancement performance in underdetermined situations, in which the number of channels is virtually increased by estimating extra observed signals at arbitrary positions along the straight line formed by real microphones. In our previous work, the effectiveness of the interpolation of virtual microphone signals for speech enhancement was experimentally confirmed. In this study, to examine the effectiveness of the extrapolation of a virtual microphone in improving the speech enhancement performance, we apply this technique to speech enhancement using a maximum signal-to-noise ratio (SNR) beamformer. Next, to improve the speech enhancement performance on the basis of the virtual microphone technique, we propose a new arrangement where a virtual microphone is placed in a position proportional to the wavelength. From the results of an experiment in an underdetermined situation, we confirmed that the proposed method markedly improves speech enhancement performance. Moreover, we present directivity patterns to confirm the behavior of each method of positioning the virtual microphone.

本文言語English
ホスト出版物のタイトルEUSIPCO 2019 - 27th European Signal Processing Conference
出版社European Signal Processing Conference, EUSIPCO
ISBN(電子版)9789082797039
DOI
出版ステータスPublished - 2019 9月
外部発表はい
イベント27th European Signal Processing Conference, EUSIPCO 2019 - A Coruna, Spain
継続期間: 2019 9月 22019 9月 6

出版物シリーズ

名前European Signal Processing Conference
2019-September
ISSN(印刷版)2219-5491

Conference

Conference27th European Signal Processing Conference, EUSIPCO 2019
国/地域Spain
CityA Coruna
Period19/9/219/9/6

ASJC Scopus subject areas

  • 信号処理
  • 電子工学および電気工学

フィンガープリント

「Wavelength proportional arrangement of virtual microphones based on interpolation/extrapolation for underdetermined speech enhancement」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル