DocumentCode :
1196140
Title :
Multichannel Room Impulse Response Generation With Coherence Control
Author :
Kuster, Martin
Author_Institution :
Lab. of Acoust. Imaging & Sound Control, Delft Univ. of Technol., Delft
Volume :
17
Issue :
4
fYear :
2009
fDate :
5/1/2009 12:00:00 AM
Firstpage :
597
Lastpage :
606
Abstract :
A method is proposed by which an arbitrary number of room impulse responses (RIRs) is generated from one input RIR. The method works by convolving the input RIR with a multitude of filters, one for each desired output RIR. The filters are designed in such a way that the coherence between all possible pairs of output RIRs feature assignable frequency-dependent values. An application example is given where the values for the coherence are given by the diffuse field coherence functions for the microphones in a five-element microphone array. The limitations in terms of achieving the desired coherence values exactly and avoiding spectral coloration are also discussed. The proposed method is most suitable for the part of the RIR that does not contain strong discrete reflections.
Keywords :
FIR filters; microphone arrays; transient response; RIR filters; coherence control; field coherence functions; five-element microphone array; frequency-dependent values; multichannel room impulse response generation; Acoustic noise; Acoustic reflection; Audio recording; Filtering; Filters; Fourier transforms; Frequency; Microphone arrays; Reverberation; Tail; Audio systems; coherence; diffuse sound; multichannel audio reproduction; room acoustics;
fLanguage :
English
Journal_Title :
Audio, Speech, and Language Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
1558-7916
Type :
jour
DOI :
10.1109/TASL.2008.2009575
Filename :
4802168
Link To Document :
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