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Dynamic microphones M-87/AIC and M-101/AIC and earphone H-143/AICThe electrical characteristics of the M-87/AIC and M-101/AIC dynamic microphone and H-143 earphones were tested for the purpose of establishing the relative performance levels of units supplied by four vendors. The microphones and earphones were tested for frequency response, sensitivity, linearity, impedance and noise cancellation. Test results are presented and discussed.
Document ID
19760011210
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Reiff, F. H. (Lockheed Electronics Co. Houston, TX, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1975
Subject Category
Communications And Radar
Report/Patent Number
NASA-CR-147471
LEC-5733
Report Number: NASA-CR-147471
Report Number: LEC-5733
Accession Number
76N18298
Funding Number(s)
CONTRACT_GRANT: NAS9-12200
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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