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Convention Paper

Miniature Microphone Arrays for Multi-channel Recording

Authors: Backman, Juha

AES Convention 120 · Paper 6681 · May 2006

Abstract

The paper describes a method of using a dense array of miniature microphones (e.g. MEMS or miniature electret) to yield precise one-point multi-channel gradient microphones. The signals obtained from individual microphones in the array are used to obtain a minum noise estimate for the are used to form the zeroth, first-, and second-order components of the gradient of the sound field at the center of the array. (Higher orders of the gradient tend to be too noisy for actual sound recording purposes.) These can be used to form stereo or multi-channel signals with adjustable polar patterns for recording purposes.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6681
Publication date
May 6, 2006
Session subject
Multichannel Sound
Affiliation
Nokia (See document for exact affiliation information.)
Type
Convention Paper