AES E-Library

AES E-Library

Design and validation of a low-cost acoustic anechoic chamber

This engineering brief describes the design, construction and validation of a low-cost acoustic anechoic chamber. This anechoic chamber will be used in a production setting as well as for research and development of a microphone array system. Three chambers have been built using the same method. The performance of the rooms is evaluated in terms of sound isolation, deviation from inverse square law, frequency response function and reverberation time. Results show that in the frequency range of interest (250 - 11025 Hz), the reverberation time for the three chambers is 19 ± 3 ms. The difference between the frequency response of the chambers is ± 4 dB in the frequency range of interest for the two latest built chambers, whereas the ?rst chamber shows a larger deviation.

Open Access

Open
Access

Authors:
Affiliations:
AES Convention: eBrief:
Publication Date:
Subject:
Permalink: http://www.aes.org/e-lib/browse.cfm?elib=20913


Download Now (5.6 MB)

This paper is Open Access which means you can download it for free.

Learn more about the AES E-Library

The Engineering Briefs at this Convention were selected on the basis of a submitted synopsis, ensuring that they are of interest to AES members, and are not overly commercial. These briefs have been reproduced from the authors' advance manuscripts, without editing, corrections, or consideration by the Review Board. The AES takes no responsibility for their contents. Paper copies are not available, but any member can freely access these briefs. Members are encouraged to provide comments that enhance their usefulness.

Start a discussion about this paper!


AES - Audio Engineering Society