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Record Details

Record 1 of 7626
Condenser Microphone Protective Grid Correction for High Frequency Measurements
Author and Affiliation:
Lee, Erik(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Bennett, Reginald(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Abstract: Use of a protective grid on small diameter microphones can prolong the lifetime of the unit, but the high frequency effects can complicate data interpretation. Analytical methods have been developed to correct for the grid effect at high frequencies. Specifically, the analysis pertains to quantifying the microphone protective grid response characteristics in the acoustic near field of a rocket plume noise source. A frequency response function computation using two microphones will be explained. Experimental and instrumentation setup details will be provided. The resulting frequency response function for a B&K 4944 condenser microphone protective grid will be presented, along with associated uncertainties
Publication Date: Apr 19, 2010
Document ID:
20100020892
(Acquired Jun 02, 2010)
Subject Category: ACOUSTICS
Report/Patent Number: M10-0112
Document Type: Conference Paper
Meeting Information: Acoustical Socity of America Conference; 19-23 Apr. 2010; Baltimore, MD; United States
Contract/Grant/Task Num: NNM05AB50C
Financial Sponsor: NASA Marshall Space Flight Center; Huntsville, AL, United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: HIGH FREQUENCIES; FREQUENCY RESPONSE; SOUND FIELDS; NOISE GENERATORS; ACOUSTICS; PLUMES; NEAR FIELDS
Availability Source: Other Sources
Availability Notes: Abstract Only
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