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Convention Paper

A Configurable Microphone Array with Acoustically Transparent Omnidirectional Elements

Authors: Abel, Jonathan S.; Bryan, Nicholas J.; Skare, Travis; Kolar, Miriam; Huang, Patty; Mostowfi, Darius; Smith III, Julius O.

AES Convention 127 · Paper 7953 · October 2009

Abstract

An acoustically transparent, configurable microphone array with omnidirectional elements, designed for room acoustics analysis and synthesis, and archaeological acoustics applications, is presented. Omnidirectional microphone elements with 2 mm-diameter capsules and 1 mm-diameter wire mounts produce a nearly acoustically transparent array, and provide a simplified mathematical framework for processing measured signals. The wire mounts are fitted onto a 1.6 cm-diameter tube forming the microphone stand, with the microphones arranged above the tube so that acoustic energy can propagate freely across the array. The wire microphone mounts have some flexibility, and the array may be configured. Detachable arms with small speakers are used to estimate the element positions with an accuracy better than the 2 mm microphone diameter.

Details

Published in
AES Convention 127
AES Convention
127
Paper number
7953
Publication date
October 6, 2009
Session subject
Arrays
Affiliation
CCRMA, Stanford University, Stanford, CA, USA; Countryman Associates, Inc., Menlo Park, CA, USA (See document for exact affiliation information.)
Type
Convention Paper