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ERRORS IN THE MEASUREMENT OF ACOUSTIC ENERGY DENSITY IN ONE-DIMENSIONAL SOUND FIELDS

โœ Scribed by BEN S. CAZZOLATO; COLIN H. HANSEN

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

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โœฆ Synopsis

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 velocity are discussed. Four types of bias error for both two-and three-microphone arrangements are investigated; namely, inherent, phase mismatch, sensitivity mismatch and spatial errors.

2000 Academic Press

๐Ÿ“œ SIMILAR VOLUMES

ERRORS ARISING FROM THREE-DIMENSIONAL EN
ERRORS ARISING FROM THREE-DIMENSIONAL ENERGY DENSITY SENSING IN ONE-DIMENSIONAL SOUND FIELDS
โœ B.S. CAZZOLATO; C.H. HANSEN ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 296 KB

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-microph