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ERRORS ARISING FROM THREE-DIMENSIONAL ENERGY DENSITY SENSING IN ONE-DIMENSIONAL SOUND FIELDS

✍ Scribed by B.S. CAZZOLATO; C.H. HANSEN

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
296 KB
Volume
236
Category
Article
ISSN
0022-460X

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✦ Synopsis

The performance of four di!erent con"gurations of three-dimensional acoustic energy density sensors are evaluated for two idealized one-dimensional sound "eld: a reactive single mode and a propagating plane wave. The 4 con"gurations of sensors are; two types of 4-microphone arrangements, a 6-microphone arrangement and a 7-microphone arrangement. Like the companion paper for one-dimensional sensors by the same authors this paper investigates the bias errors arising from four error types: inherent, phase mismatch, sensitivity mismatch and spatial errors. It is shown that for plane wave conditions a 4-microphone arrangement is more accurate than the &&standard'' 6-microphone arrangement.

2000 Academic Press

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ERRORS IN THE MEASUREMENT OF ACOUSTIC EN
ERRORS IN THE MEASUREMENT OF ACOUSTIC ENERGY DENSITY IN ONE-DIMENSIONAL SOUND FIELDS
✍ BEN S. CAZZOLATO; COLIN H. HANSEN πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 612 KB

Acoustic energy density has been shown previously to be an e!ective cost function for active control of noise in enclosed sound "elds. Here bias errors in the energy density measurements that occur in one-dimensional sound "elds when using the two-microphone technique to estimate the particle veloci