Projekter pr. år
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.
Originalsprog | Engelsk |
---|---|
Tidsskrift | I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings |
Sider (fra-til) | 11-15 |
Antal sider | 5 |
ISSN | 1520-6149 |
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 cross-correlation
Projekter
- 1 Afsluttet
-
Localization and Tracking of Speech - a Joint Audio-Visual Approach
01/10/2013 → 30/09/2016
Projekter: Projekt › Forskning