Microphone/headphone audio headset comprising a means for suppressing noise in a speech signal, in particular for a hands-free telephone system

The headset has a physiological sensor (18) provided in an insulating cushion of a closed shell of one of earpieces. A microphone set has front and rear microphones (20, 22) placed on the shell and aligned to form a linear array in a main direction toward a mouth of a wearer. A combiner-and-phase sh...

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Bibliographische Detailangaben
Hauptverfasser:	HERVE, MICHAEL, VITTE, GUILLAUME
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION
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Beschreibung
Zusammenfassung:	The headset has a physiological sensor (18) provided in an insulating cushion of a closed shell of one of earpieces. A microphone set has front and rear microphones (20, 22) placed on the shell and aligned to form a linear array in a main direction toward a mouth of a wearer. A combiner-and-phase shifter (56) reduces non-frequency noise of speech signal and includes a combiner for applying a delay to a signal delivered by the microphone and subtracting a signal delivered by another microphone from the delay signal so as to remove noise from a near speech signal uttered by the wearer.