Projects per year
Abstract
Time-difference-of-arrival (TDOA) estimation is an important problem in many microphone signal processing applications. Traditionally, this problem is solved by using a cross-correlation method, but in this paper we show that the cross-correlation method is actually a restricted special case of a much more general method. In this connection, we establish the conditions under which the cross-correlation 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 cross-correlation method in terms of estimation accuracy on both synthetic and real-world data. The simulation code is available online.
Original language | English |
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Journal | I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings |
Pages (from-to) | 11-15 |
Number of pages | 5 |
ISSN | 1520-6149 |
DOIs | |
Publication status | Published - Apr 2015 |
Event | 40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2015 - Brisbane, Australia Duration: 19 Apr 2015 → 24 Apr 2015 Conference number: 2015 |
Conference
Conference | 40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2015 |
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Number | 2015 |
Country/Territory | Australia |
City | Brisbane |
Period | 19/04/2015 → 24/04/2015 |
Projects
- 1 Finished
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Localization and Tracking of Speech - a Joint Audio-Visual Approach
Jensen, J. R. (Project Participant)
01/10/2013 → 30/09/2016
Project: Research