Wide-Area Sound-Control System for Reducing Reverberation Using Power Envelope Inverse Filtering

• NAKADA Ryohei

  TOSHIBA TEC SOLUTION SERVICES CORPORATION

• HASEGAWA Yutaka

  Faculty of Science and Engineering, University of Toyama

• HIROBAYASHI Shigeki

  Faculty of Science and Engineering, University of Toyama

• YOSHIZAWA Toshio

  Faculty of Science and Engineering, University of Toyama

• MISAWA Tadanobu

  Faculty of Science and Engineering, University of Toyama

• SUZUKI Junya

  Sony Corporation

抄録

We propose a sound field control system to control the sound over a wide area within a room by reducing the influence of the reproduction space using power envelope inverse filtering (PEIF). Envelopes of the impulse response within the room have approximately the same shape at all observation points. Therefore, the proposed sound field control system can control with a small number of loudspeakers a wider area by reducing reverberation in the room through envelope processing. We present experimental data demonstrating that the proposed PEIF system can provide better control than a system that uses minimum phase inverse filtering (MPIF), which is conventionally used for reducing reverberation. Improvement was observed across the frequency band, especially above 1kHz. Additionally, our PEIF system is more effective over the high-frequency range.

収録刊行物

• IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

  IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E96.A (7), 1509-1517, 2013

  一般社団法人 電子情報通信学会

キーワード

• acoustic fields
• audio systems
• architectural acoustics
• acoustic filters
• signal processing

詳細情報

• CRID: 1390282681287264128
• NII論文ID: 130003370677
• DOI: 10.1587/transfun.e96.a.1509
• ISSN: 17451337
• ISSN: 09168508
• Web Site: https://www.jstage.jst.go.jp/article/transfun/E96.A/7/E96.A_1509/_pdf
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可