Frequency response analysis of microphone preamplifiers in the audible and ultrasonic regime
Frequency response analysis of microphone preamplifiers in the audible and ultrasonic regime
This report presents an investigation on the frequency response of two types of electret microphone preamplifiers currently in use with SotonArray, Southampton University's wind tunnel microphone array system. The investigation is presented as a comparison between the response of an electret microphone coupled to the preamplifiers and a reference instrumentation-grade microphone and preamplifier assembly. The results show that electret microphones can potentially be used above their rated frequency range of 20kHz; in fact no degradation in signal was noticed up to 48kHz. The results also show that the newly-built SES preamps have a much better high-frequency performance than the original ISVR preamps.
University of Southampton
Fenech, Benjamin A.
b55b51d6-7806-4933-95cb-86e4934c6ee2
Takeda, Kenji
e699e097-4ba9-42bd-8298-a2199e71d061
2007
Fenech, Benjamin A.
b55b51d6-7806-4933-95cb-86e4934c6ee2
Takeda, Kenji
e699e097-4ba9-42bd-8298-a2199e71d061
Fenech, Benjamin A. and Takeda, Kenji
(2007)
Frequency response analysis of microphone preamplifiers in the audible and ultrasonic regime
(School of Engineering Sciences Aerospace Engineering AFM Technical Reports, AFM 07/02)
Southampton, UK.
University of Southampton
19pp.
Record type:
Monograph
(Project Report)
Abstract
This report presents an investigation on the frequency response of two types of electret microphone preamplifiers currently in use with SotonArray, Southampton University's wind tunnel microphone array system. The investigation is presented as a comparison between the response of an electret microphone coupled to the preamplifiers and a reference instrumentation-grade microphone and preamplifier assembly. The results show that electret microphones can potentially be used above their rated frequency range of 20kHz; in fact no degradation in signal was noticed up to 48kHz. The results also show that the newly-built SES preamps have a much better high-frequency performance than the original ISVR preamps.
Text
AFM_07.02.pdf
- Accepted Manuscript
More information
Published date: 2007
Organisations:
Aerodynamics & Flight Mechanics
Identifiers
Local EPrints ID: 44727
URI: http://eprints.soton.ac.uk/id/eprint/44727
PURE UUID: 2641083c-b834-4212-9605-1c119a8a7e47
Catalogue record
Date deposited: 21 Mar 2007
Last modified: 15 Mar 2024 09:06
Export record
Contributors
Author:
Benjamin A. Fenech
Author:
Kenji Takeda
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics