Noise cancellation system and headphone therefor

Headphones, typically for airline passenger use and fitted with noise cancellation microphones, have a filter network attached to each headset to render the response of each microphone at least much of the way towards a normalised impedance/response curve. In this way various manufactures of headpho...

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Bibliographische Detailangaben
Hauptverfasser:	GRAEME COLIN FULLER, MARK DONALDSON
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:	Headphones, typically for airline passenger use and fitted with noise cancellation microphones, have a filter network attached to each headset to render the response of each microphone at least much of the way towards a normalised impedance/response curve. In this way various manufactures of headphones may be used with an onboard noise cancellation system which is actually optimised for one manufacturers headphones. The filter may be a simple high pass filter and is preferably built in to the headphone.