A microphone-array configuration for AMNOR : Adaptive microphone-array system for noise reduction

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概要

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• This paper describes a microphone-array configuration for AMNOR (Adaptive Microphone-array system for NOise Reduction). AMNOR performance (S/N improvement) depends on the microphone-array configuration. Therefore, the chosen configuration is examined under three different sound field conditions by simulation experiment. The distance between two microphones is first described in detail to show that the optimum microphone distance is one-half the wavelength of the highest frequency in the broadband noise of interest. Based on these results, linear and circular-array configurations are next examined. These configurations can obtain similar results by the introduction of apparent microphone distance. The maximum value of this distance should also be one-half the wavelength of the highest frequency of the broadband noise.

• 社団法人日本音響学会の論文

著者

• ICHINOSE Yutaka

  NTT Information Hardware System Laboratories

• Kataoka Akitoshi

  Ntt Human Interface Laboratories

• Ichinose Yutaka

  NTT Human Interface Laboratories

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• A microphone-array configuration for AMNOR : Adaptive microphone-array system for noise reduction

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