Absolute Method for Sound Intensity Measurement
作者:
D. R. Pardue,
A. L. Hedrich,
期刊:
Review of Scientific Instruments
(AIP Available online 1956)
卷期:
Volume 27,
issue 8
页码: 631-632
ISSN:0034-6748
年代: 1956
DOI:10.1063/1.1715654
出版商: AIP
数据来源: AIP
摘要:
Since sound propagation is an adiabatic process, a temperature fluctuation accompanies the sound wave in media for which the specific heat ratio is greater than unity. If the equation of state and the sound field are known, this temperature fluctuation may be related to the intensity of the sound wave.A thermometer capable of measuring fast, small‐amplitude temperature variations is described. Its output is calculated for the case of plane, sinusoidal sound waves in an ideal gas. Its use as a microphone and sound intensity meter is then considered.
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