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1988•Journal of vibration and acousticsRequires access

The Two-Microphone Sound Intensity Probe

Joseph Pope

Open publisher page 1 citations

Abstract

A probe consisting of a pair of pressure-sensing microphones is an integral part of most commonly used sound intensity measurement systems. Sound intensity is a vector that describes the average rate and direction of energy flow in an acoustic field. Recently the measurement of sound intensity has been of increasing theoretical and practical interest. The theory and technology of two-microphone probes are reviewed, with particular attention to the factors that impact the accuracy of intensity measurements. Proper measurement techniques and validation of results are discussed.

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What this paper is about

A probe consisting of a pair of pressure-sensing microphones is an integral part of most commonly used sound intensity measurement systems. Sound intensity is a vector that describes the average rate and direction of energy flow in an acoustic field. Recently the measurement of sound intensity has been of increasing theoretical and practical interest. The theory and technology of two-microphone probes are reviewed, with particular attention to the factors that impact the accuracy of intensity measurements. Proper measurement techniques and validation of results are discussed.

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Available abstract

A probe consisting of a pair of pressure-sensing microphones is an integral part of most commonly used sound intensity measurement systems. Sound intensity is a vector that describes the average rate and direction of energy flow in an acoustic field. Recently the measurement of sound intensity has been of increasing theoretical and practical interest. The theory and technology of two-microphone probes are reviewed, with particular attention to the factors that impact the accuracy of intensity measurements. Proper measurement techniques and validation of results are discussed.

Key concepts: Sound intensity, Acoustics, Microphone, Sound intensity probe, Intensity (physics), Sound pressure, Acoustic source localization, Sound (geography)

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