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Adaptive noise cancellation of doppler shifted noise signals : a linear framework

Weiss, Stephan and Stewart, Robert (1996) Adaptive noise cancellation of doppler shifted noise signals : a linear framework. In: 8th European Signal Processing Conference, 1996-09-10 - 1996-09-13, Trieste.

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Abstract

In this paper we investigate the performance of single channel adaptive noise cancellation techniques for situations where the noise signal received by the two microphones cannot be related by a fixed weight canceller's (linear) digital filter due to Doppler shift on the two signals. A mathematical signal model is produced, which shows that the adaptive filter is in fact required to identify a time-varying system which incorporates Doppler shift, and potential rapid variations in signal power as the Doppler producing source passes the filter microphones. We present theory, simulated performance and real world performance for both the least mean square (LMS) and normalised LMS (NLMS) when operating in a Doppler noise environment.

Item type: Conference or Workshop Item (Paper)
ID code: 32620
Keywords: adaptive noise cancellation techniques , digital filter , filter microphones, Doppler noise environment, doppler, shifted noise signals, linear framework, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 22 Aug 2011 09:28
Last modified: 17 Jul 2013 16:11
URI: http://strathprints.strath.ac.uk/id/eprint/32620

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