DocumentCode :
1092310
Title :
Spectral root homomorphic deconvolution system
Author :
Lim, Jae S.
Author_Institution :
Massachusetts Institute of Technology, Cambridge, MA
Volume :
27
Issue :
3
fYear :
1979
fDate :
6/1/1979 12:00:00 AM
Firstpage :
223
Lastpage :
233
Abstract :
In this paper, we develop a new homomorphic deconvolution system that is useful when the signal to be deconvolved is a convolution of two components, one of which is a train of pulses and for the other we have some a priori information on its approximate number of poles and zeros. The system that we develop is essentially the same as the logarithmic homomorphic deconvolution system (LHDS) [1]-[3] except that the logarithmic and exponential operations are replaced with ( )γand ( )1/γoperations. By theoretical and/or empirical results, we illustrate that under appropriate conditions, the new system with the proper choice of γ can potentially yield a better result than the LHDS and that the results obtained by the new system with the value of γ close to 0 are essentially the same as those obtained by the LHDS. As a potential area of practical application, a new speech analysis/ synthesis system is developed based on the new homomorphic deconvolution system discussed in this paper. Some preliminary results on the performance of such a system are also discussed.
Keywords :
Convolution; Deconvolution; Filtering; Nonlinear filters; Oral communication; Poles and zeros; Reverberation; Signal synthesis; Speech analysis; Speech synthesis;
fLanguage :
English
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
0096-3518
Type :
jour
DOI :
10.1109/TASSP.1979.1163234
Filename :
1163234
Link To Document :
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