Sound Field Control by Indefinite MINT Filters

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概要

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• The Multiple input-output INverse / filtering Theorem (MINT) proves that N+1 inverse filters are necessary to precisely control sound at N points in a space, and gives the minimum orders of such filters. In this paper, we propose the Indefinite MINT Filters (IMFs) for adding one or more control points to the above framework without increasing the number of inverse filters. Although the controllability of the new point is not sufficient, that of the other points is still maintained high enough by the principle of the MINT. In a two point sound control (using two inverse filters), the IMFs could reduce the squared error to the desired sound up to - 10 dB at the second point which is not controlled by the MINT.

• 社団法人電子情報通信学会の論文
• 1997-05-25

著者

• Nakajima Hirofumi

  Kogakuin University

• MIYOSHI Masato

  NTT Human Interface Laboratories

• TOHYAMA Mikio

  Kogakuin University

関連論文

• Sound image rendering using a loudspeaker and a fully open-air headphone-set
• Special Section on Acoustic Signal Processing
• Sound Field Control by Indefinite MINT Filters
• Special Section on Acoustical Inverse Problems
• A method of interpolating binaural impulse responses for moving sound images

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