Title :
Performance of time-delay estimation in the presence of room reverberation
Author :
Champagne, Benoît ; Bédard, Stéphane ; Stéphenne, Alex
Author_Institution :
INRS Telecommun., Verdun, Que., Canada
fDate :
3/1/1996 12:00:00 AM
Abstract :
Synthetic microphone signals generated with the image model technique are used to study the effects of room reverberation on the performance of the maximum likelihood (ML) estimator of the time delay, in which the estimate is obtained by maximizing the cross correlation between filtered versions of the microphone signals. The results underscore the adverse effects of reverberation on the bias, variance and probability of anomaly of the ML estimator. Explanations of these effects are provided
Keywords :
acoustic correlation; acoustic signal processing; architectural acoustics; delays; filtering theory; maximum likelihood estimation; microphones; reverberation; bias; cross correlation; filtered microphone signals; image model technique; maximum likelihood estimator; performance; probability; room reverberation; synthetic microphone signals; time-delay estimation; variance; Delay estimation; Discrete cosine transforms; Filter bank; Filtering algorithms; Finite impulse response filter; Maximum likelihood estimation; Microphones; Reverberation; Signal processing algorithms; Speech processing;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
