Mechanical Pressure‐Gradient‐to‐Pressure Sound Transducer
作者:
T. F. W. Embleton,
G. J. Thiessen,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1961)
卷期:
Volume 33,
issue 7
页码: 933-935
ISSN:0001-4966
年代: 1961
DOI:10.1121/1.1908853
出版商: Acoustical Society of America
数据来源: AIP
摘要:
In places of high ambient‐noise level, the use of electrical devices as an aid to speech communication is sometimes precluded by safety requirements. A mechanical device may then be used provided that the individuals concerned are close to each other. Such a device can be made to incorporate all the acoustical benefits of a dose‐talking microphone. Sentence intelligibility tests showed that when the articulation index was zero for a nearby speech source the median subject obtained a score of 28% using ear covers alone and 84% with the sound transducer; the subjects with extreme scores improved from 0 to 14% and from 88 to 100% respectively. No subject using the device suffered a decrease in intelligibility.
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