Paper Info
Title
A Perspective on Frequency-Domain Beamformers in Room Acoustics
Abstract
Signals captured by a set of microphones in a speech communication system are mixtures of desired signals and noise. In this paper, a different perspective on frequency-domain beamformers in room acoustics is provided. Specifically, the observed noise signals are divided into coherent and incoherent signal components while no assumptions are being made regarding the number of coherent noise sources and the noise sound field. From this perspective, performance measures are defined and existing beamformers are deduced. In addition, a new and general tradeoff beamformer is proposed that enables a compromise between noise reduction and speech distortion on the one hand, and coherent noise versus incoherent noise reductions on the other hand. The presented performance evaluation shows how existing beamformers and the tradeoff beamformer perform in different scenarios.
Year
DOI
Venue
2012
10.1109/TASL.2011.2169786
IEEE Transactions on Audio, Speech & Language Processing
Keywords
Field
DocType
coherent noise source,observed noise signal,noise sound field,incoherent noise reduction,different scenario,room acoustics,different perspective,frequency-domain beamformers,existing beamformers,noise reduction,coherent noise,tradeoff,speech,frequency domain,frequency domain analysis,speech communication,signal to noise ratio,acoustic noise,speech processing,beamforming
Noise,Noise reduction,Background noise,Noise floor,Colors of noise,Noise measurement,Computer science,Signal-to-noise ratio,Speech recognition,Acoustics,Room acoustics
Journal
Volume
Issue
ISSN
20
3
1558-7916
Citations 
PageRank 
References 
2
0.44
11
Authors
2
Name
Order
Citations
PageRank
Emanuel A. P. Habets160466.23
Jacob Benesty21941146.01