AUDIO HEADSET WITH NOISE-REDUCTION

The headphones (10) comprise:a transducer (16) (12);an noise-canceling processing chain (30, 40) comprising:a microphone (31, 41);a noise-canceling processing filter (34, 44) which comprises in series:a stabilisation filter (34A, 44A) whose transfer function is substantially equal to the inverse of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	HOANG CO THUY, Vu
Format:	Patent
Sprache:	eng ; fre ; ger
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:	The headphones (10) comprise:a transducer (16) (12);an noise-canceling processing chain (30, 40) comprising:a microphone (31, 41);a noise-canceling processing filter (34, 44) which comprises in series:a stabilisation filter (34A, 44A) whose transfer function is substantially equal to the inverse of the transfer function of the processed secondary path, anda noise cancellation filter (34B, 44B) whose transfer function is a noise cancellation transfer function.The secondary path is formed between the transducer (16) and the eardrum, andthe transfer function of the processed secondary path is the transfer function of the secondary path combined with the transfer functions of the processing components, excluding the processing filter (34, 44).