Comparison of Time-Delay Estimation Techniques in Acoustic Environment
نویسندگان
چکیده
منابع مشابه
Comparison of Time-Delay Estimation Techniques in Acoustic Environment
The calculation of time delay between a signal and its echo received at a microphone has been proven to be a useful parameter. Speech enhancement, speaker localization, speech and speaker recognition are few applications of TDE methods. We are implementing various methods for the estimation of time delay. These methods are implemented in MATLAB. The reason for choosing the MATLAB as the analysi...
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ABSTRACT Recently there has been an increasing interest in the use of the TDE technique to locate and track acoustic sources in a conferencing environment. Typically, the delay estimate is obtained as the time-lag that maximizes the cross-correlation function between the filtered versions of two received signals. This so-called generalized cross-correlation technique, based on the measurements ...
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In this paper, an e cient Weighted Fourier transform and RELAXation based algorithm (referred to as WRELAX) is rst proposed for the well-known time delay estimation problem. WRELAX involves only a sequence of weighted Fourier transforms. Its resolution is much higher than that of the conventional matched lter approach. One disadvantage associated with WRELAX is that it converges slowly when the...
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Time delay estimation has been a research topic of significant practical importance in many fields (radar, sonar, seismology, geophysics, ultrasonics, hands-free communications, etc.). It is a first stage that feeds into subsequent processing blocks for identifying, localizing, and tracking radiating sources. This area has made remarkable advances in the past few decades, and is continuing to p...
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ژورنال
عنوان ژورنال: International Journal of Computer Applications
سال: 2010
ISSN: 0975-8887
DOI: 10.5120/1234-1634