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Abstrakt
Timedifferenceofarrival (TDOA) estimation is an important problem in many microphone signal processing applications. Traditionally, this problem is solved by using a crosscorrelation method, but in this paper we show that the crosscorrelation method is actually a restricted special case of a much more general method. In this connection, we establish the conditions under which the crosscorrelation method is a statistically efficient estimator. One of the conditions is that the source signal is periodic with a known fundamental frequency of 2π/N radians per sample, where N is the number of data points, and a known number of harmonics. The more general method only relies on that the source signal is periodic and is, therefore, able to outperform the crosscorrelation method in terms of estimation accuracy on both synthetic and realworld data. The simulation code is available online.
Originalsprog  Engelsk 

Tidsskrift  I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings 
Sider (fratil)  1115 
Antal sider  5 
ISSN  15206149 
DOI  
Status  Udgivet  apr. 2015 
Begivenhed  40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2015  Brisbane, Australien Varighed: 19 apr. 2015 → 24 apr. 2015 Konferencens nummer: 2015 
Konference
Konference  40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2015 

Nummer  2015 
Land/Område  Australien 
By  Brisbane 
Periode  19/04/2015 → 24/04/2015 
Emneord
 TDOA estimation
 fundamental frequency estimation
 generalized crosscorrelation
Projekter
 1 Afsluttet

Localization and Tracking of Speech  a Joint AudioVisual Approach
01/10/2013 → 30/09/2016
Projekter: Projekt › Forskning