AN IMPROVEMENT TO THE EXPLICIT TIME DELAY ESTIMATOR

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)

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Author(s)

Detail(s)

Original languageEnglish
Title of host publication1995 International Conference on Acoustics, Speech, and Signal Processing
PublisherIEEE
Pages3151-3154
Volume5
ISBN (Print)0780324315
Publication statusPublished - May 1995
Externally publishedYes

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149
ISSN (Electronic)0736-7791

Conference

Title20th International Conference on Acoustics, Speech, and Signal Processing
PlaceUnited States
CityDetroit, MI
Period9 - 12 May 1995

Abstract

The explicit time delay estimator (ETDE) provides an efficient way to estimate the time difference of arrival between signals received at two separated sensors. However, the algorithm is biased for finite filter length and the delay bias increases when the signal-to-noise ratio (SNR) or the number of filter taps decreases. In this paper, we add adaptive gain control to the ETDE to decouple the effect of changes in the SNR during adaptation. As a result, a smaller delay variance and an unbiased delay estimate for a wide range of filter lengths can be attained. Computer simulations are presented to validate the theoretical derivations of the proposed estimator for static and linearly time-varying delays under both stationary and nonstationary signal/noise power environments.

Citation Format(s)

AN IMPROVEMENT TO THE EXPLICIT TIME DELAY ESTIMATOR. / So, H.C.; Ching, P.C.; Chan, Y.T.

1995 International Conference on Acoustics, Speech, and Signal Processing. Vol. 5 IEEE, 1995. p. 3151-3154 (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)