A digital processing system for source location and sound capture by large microphone arrays

Author

Silverman, H.F. ; Patterson, William R., III ; Flanagan, James L. ; Rabinkin, Daniel

Author_Institution

LEMS, Brown Univ., Providence, RI, USA

Volume

1

fYear

1997

fDate

21-24 Apr 1997

Firstpage

251

Abstract

The Huge Microphone Array (HMA) project started in February 1994 to design, construct, and test a real-time 512-microphone array system and to develop algorithms for use on it. Analysis of known algorithms showed that signal-processing performance of over 6 Gigaflops would be required; at the same time, there was a need for “portability”, i.e., fitting into a small van. These tradeoffs and many others have led to a unique design in both hardware and software. This paper presents the design and its justifications. Performance data for a few important algorithms relative to usage of processing-capability, response latency, and difficulty of programming are discussed

Keywords

acoustic signal processing; acoustic transducer arrays; array signal processing; direction-of-arrival estimation; microphones; real-time systems; software engineering; Huge Microphone Array project; algorithms; digital processing system; hardware design; large microphone arrays; microphone array system; performance data; programming; response latency; signal processing performance; software design; sound capture; source location; Acoustical engineering; Algorithm design and analysis; Buildings; Delay; Design engineering; Microphone arrays; Optical fiber cables; Position measurement; Real time systems; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.599616

Filename

599616