Measurement of Noise Canceling Effectiveness of Microphones
作者:
Leo M. Levine,
Joseph Hershkowitz,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1956)
卷期:
Volume 28,
issue 5
页码: 973-976
ISSN:0001-4966
年代: 1956
DOI:10.1121/1.1908534
出版商: Acoustical Society of America
数据来源: AIP
摘要:
The noise canceling effectiveness of a microphone is determined by measuring the random noise discrimination as a function of frequency under conditions simulating actual usage, and then using this characteristic to compute the articulation index for an ideal system containing the microphone, when operating under specified noise and speech conditions. Results so obtained are shown to correlate with those of articulation tests for three microphones evaluated for three noise types at different noise levels.
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