Abstract
In this paper, we analyze a general multiple-microphone and single-loudspeaker system, where an adaptive algorithm is used to cancel acoustic feedback/echo and a beamformer processes the feedback/echo canceled signals. This system can be viewed as part of a typical hearing aid system and/or a traditional acoustic echo cancellation system. We introduce and derive an approximation of a useful frequency domain measure - the power transfer function - and show how to predict the system stability bound, convergence rate and the steady-state behavior across time and frequency. Furthermore, we show how the derived expressions can be used to determine e.g. the step size parameter in the adaptive algorithms to achieve a desired system property e.g. convergence rate at a specific frequency.
Originalsprog | Engelsk |
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Tidsskrift | I E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings |
Sider (fra-til) | 433-436 |
ISSN | 1520-6149 |
DOI | |
Status | Udgivet - 22 maj 2011 |
Begivenhed | ICASSP, International Conference of Acoustics, Speech and Signal Processing - Prague, Tjekkiet Varighed: 22 maj 2011 → 27 maj 2011 |
Konference
Konference | ICASSP, International Conference of Acoustics, Speech and Signal Processing |
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Land/Område | Tjekkiet |
By | Prague |
Periode | 22/05/2011 → 27/05/2011 |