Acoustical Science and Technology
Online ISSN : 1347-5177
Print ISSN : 1346-3969
ISSN-L : 0369-4232
PAPERS
A new algorithm for blind estimation of common poles in multiple transmission paths based on linear prediction
Takafumi HikichiMasato Miyoshi
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2005 Volume 26 Issue 1 Pages 1-7

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Abstract

This paper proposes a blind calculation method for the poles common to multiple signal transmission paths. In the field of room acoustics, the poles correspond to the mode frequencies that are determined by room size and shape, and they do not change when source and receiver locations change. Information on these acoustic poles is useful for many applications, including echo cancellation and sound field equalization in a room. Conventional pole estimation methods require a priori measurement of the room transfer functions. This paper proposes a new method for the blind calculation of the poles, where the poles are calculated solely from the observed signals. Simulation results show that the proposed algorithm provides precise estimates of the common poles.

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© 2005 by The Acoustical Society of Japan
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