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

Research output: Contribution to conferencePaper

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.
LanguageEnglish
Number of pages4
Publication statusPublished - 1996
Event8th European Signal Processing Conference - Trieste, Italy
Duration: 10 Sep 199613 Sep 1996

Conference

Conference8th European Signal Processing Conference
CountryItaly
CityTrieste
Period10/09/9613/09/96

Fingerprint

Doppler effect
Microphones
Time varying systems
Adaptive filters
Digital filters

Keywords

  • adaptive noise cancellation techniques
  • digital filter
  • filter microphones
  • Doppler noise environment
  • doppler
  • shifted noise signals
  • linear framework

Cite this

Weiss, S., & Stewart, R. (1996). Adaptive noise cancellation of doppler shifted noise signals: a linear framework. Paper presented at 8th European Signal Processing Conference, Trieste, Italy.
Weiss, Stephan ; Stewart, Robert. / Adaptive noise cancellation of doppler shifted noise signals : a linear framework. Paper presented at 8th European Signal Processing Conference, Trieste, Italy.4 p.
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author = "Stephan Weiss and Robert Stewart",
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note = "8th European Signal Processing Conference ; Conference date: 10-09-1996 Through 13-09-1996",

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Weiss, S & Stewart, R 1996, 'Adaptive noise cancellation of doppler shifted noise signals: a linear framework' Paper presented at 8th European Signal Processing Conference, Trieste, Italy, 10/09/96 - 13/09/96, .

Adaptive noise cancellation of doppler shifted noise signals : a linear framework. / Weiss, Stephan; Stewart, Robert.

1996. Paper presented at 8th European Signal Processing Conference, Trieste, Italy.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Adaptive noise cancellation of doppler shifted noise signals

T2 - a linear framework

AU - Weiss, Stephan

AU - Stewart, Robert

PY - 1996

Y1 - 1996

N2 - 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.

AB - 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.

KW - adaptive noise cancellation techniques

KW - digital filter

KW - filter microphones

KW - Doppler noise environment

KW - doppler

KW - shifted noise signals

KW - linear framework

UR - http://www.eurasip.org/Proceedings/Eusipco/1996/abstract/all.htm#pas_12

M3 - Paper

ER -

Weiss S, Stewart R. Adaptive noise cancellation of doppler shifted noise signals: a linear framework. 1996. Paper presented at 8th European Signal Processing Conference, Trieste, Italy.