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Theoretical study of acoustic circular arrays with tangential pressure gradient sensors

Theoretical study of acoustic circular arrays with tangential pressure gradient sensors
Theoretical study of acoustic circular arrays with tangential pressure gradient sensors
Microphone arrays as a means of sound field acquisition have been the topic of extensive research for more than eight decades now. A number of designs have been suggested, each trying to overcome difficulties that are inherent to either the decomposition of the sound field, the transducers in use or the presence of the array itself. This work presents a theoretical analysis of circular microphone arrays that do not measure the sound pressure but the component of its gradient that is tangential to a given boundary. Its performance is compared to that of a conventional pressure sensor array as a benchmark. The focus of the analysis and subsequent assessment lies on spatial aliasing and performance in the presence of noise.
1762-1774
Hoffmann, Falk-Martin
b5b5b465-9ff4-4eb5-845e-c36c6d1c9b97
Fazi, Filippo Maria
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Hoffmann, Falk-Martin
b5b5b465-9ff4-4eb5-845e-c36c6d1c9b97
Fazi, Filippo Maria
e5aefc08-ab45-47c1-ad69-c3f12d07d807

Hoffmann, Falk-Martin and Fazi, Filippo Maria (2015) Theoretical study of acoustic circular arrays with tangential pressure gradient sensors. IEEE/ACM Transactions on Audio, Speech, and Language Processing, 23 (11), 1762-1774. (doi:10.1109/TASLP.2015.2449083).

Record type: Article

Abstract

Microphone arrays as a means of sound field acquisition have been the topic of extensive research for more than eight decades now. A number of designs have been suggested, each trying to overcome difficulties that are inherent to either the decomposition of the sound field, the transducers in use or the presence of the array itself. This work presents a theoretical analysis of circular microphone arrays that do not measure the sound pressure but the component of its gradient that is tangential to a given boundary. Its performance is compared to that of a conventional pressure sensor array as a benchmark. The focus of the analysis and subsequent assessment lies on spatial aliasing and performance in the presence of noise.

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Hoffmann, Fazi - Theoretical Study of Acoustic Circular Arrays with Tangential Pressure Gradient Sensors - ePrint.pdf - Accepted Manuscript
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Accepted/In Press date: 8 June 2015
e-pub ahead of print date: June 2015
Published date: November 2015
Organisations: Acoustics Group

Identifiers

Local EPrints ID: 379904
URI: http://eprints.soton.ac.uk/id/eprint/379904
PURE UUID: 4a2957c3-b322-4a01-bfff-18324e43b384
ORCID for Falk-Martin Hoffmann: ORCID iD orcid.org/0000-0003-2925-2124
ORCID for Filippo Maria Fazi: ORCID iD orcid.org/0000-0003-4129-1433

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Date deposited: 24 Aug 2015 13:21
Last modified: 15 Mar 2024 03:32

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Contributors

Author: Falk-Martin Hoffmann ORCID iD

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