COMPENSATION AND AUTOMATIC GAIN CONTROL IN ACTIVE NOISE REDUCTION DEVICES

WIPO Patent Application WO/2018/183714

A3

The technology described in this document can be embodied in a method that includes receiving an input signal representing audio captured by a microphone of an active noise reduction (ANR) headphone, and processing, by a first compensator, a first frequency range of the input signal to generate a first signal for an acoustic transducer of the ANR headphone. The method also includes processing, by a second compensator disposed in parallel to the first compensator, a second frequency range of the input signal to generate a second signal for the acoustic transducer. The first frequency range includes frequencies higher than the frequencies in the second frequency range. The method also includes detecting, by one or more processing devices, that the second signal satisfies a threshold condition, and attenuating the second signal responsive to determining that the second signal satisfies the threshold condition.

WO/2023/238455	EARPIECE
JPH0548494	[Name of device] Throat microphone holding device
JP5588036	Metal grain electric conduction cable

CATTELL JOSEPH H (US)
O'CONNELL MICHAEL (US)
CARRERAS RICARDO (US)
WARKENTIN DAVID (US)

PCT/US2018/025196

November 22, 2018

March 29, 2018

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BOSE CORP (US)
CATTELL JOSEPH H (US)
OCONNELL MICHAEL (US)
CARRERAS RICARDO F (US)
WARKENTIN DAVID (US)

H04R1/10; G10K11/178

WO2016054186A1

2016-04-07

US20100260345A1	2010-10-14
US20120014529A1	2012-01-19
EP3128760A1	2017-02-08
US20100246836A1	2010-09-30
US20150154950A1	2015-06-04
US20110243343A1	2011-10-06
US20110007907A1	2011-01-13

SARKAR, Indranil (US)

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