In this paper we discuss some preliminary results on using Widrow's Adaptive Noise Cancelling (ANC) algorithm to reduce the background noise present in a fighter pilot's speech. With a dominant noise source present and with the pilot wearing an oxygen facemask, we demonstrate that good (less than 10 dB) cancellation of the additive noise and little speech distortion can be achieved having the reference microphone attached to the outside of the facemask and by updating the filter coefficients only during silence intervals.
Adaptive noise cancellation in a fighter cockpit environment
Angepasste Geraeuschunterdrueckung in der Umgebung eines Kampfflugzeug-Cockpits
1984
4 Seiten, 2 Bilder, 10 Quellen
Aufsatz (Konferenz)
Englisch
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