Iterative Estimation and Compensation of Signal Direction for Moving Sound Source by Mobile Microphone Array(Engineering Acoustics)

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概要

• 論文の詳細を見る

• This paper proposes a simple method for estimation and compensation of signal direction, to deal with relative change of sound source location caused by the movements of a microphone array and a sound source. This method introduces a delay filter that has shifted and sampled sinc functions. This paper presents a concept for the joint optimization of arrival time differences and of the coordinate system of a mobile microphone array. We use the LMS algorithm to derive this method by maintaining a certain relationship between the directions of the microphone array and the sound source directions. This method directly estimates the relative directions of the microphone array to the sound source directions by minimizing the relative differences of arrival time among the observed signals, not by estimating the time difference of arrival (TDOA) between two observed signals. This method also compensates the time delay of the observed signals simultaneously, and it has a feature to maintain that the output signals are in phase. Simulation results support effectiveness of the method.

• 社団法人電子情報通信学会の論文
• 2004-11-01

著者

• NAKAMURA Satoshi

  ATR Spoken Language Translation Research Labs.

• MIZUMACHI Mitsunori

  ATR Spoken Language Translation Research Laboratories

• Mizumachi M

  “keihanna Sci. City" Kyoto‐fu Jpn

• Horiuchi Toshiharu

  Atr Spoken Language Translation Research Laboratories:the Graduate School Of Engineering Nagaoka Uni

• Nakamura Satoshi

  Atr Spoken Language Translation Res. Lab. Kyoto Jpn

• Nakamura Satoshi

  Atr Spoken Language Communication Res. Lab. Kyoto‐fu Jpn

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