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1. (WO2018127483) AUDIO CAPTURE USING BEAMFORMING

Pub. No.:    WO/2018/127483    International Application No.:    PCT/EP2018/050045
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Wed Jan 03 00:59:59 CET 2018
IPC: G10L 21/0208
H04R 3/00
G01S 3/808
G10L 21/0216
G10L 25/78
G10L 25/87
Applicants: KONINKLIJKE PHILIPS N.V.
Inventors: JANSE, Cornelis, Pieter
JANSSEN, Rik, Jozef, Martinus
Title: AUDIO CAPTURE USING BEAMFORMING
Abstract:
An audio capture apparatus comprises a first beamformer (303) which is arranged to generate a beamformed audio output signal. An adapter (305) adapts beamform parameters of the first beamformer and a detector (307) detects an attack of speech in the beamformed audio output signal. A controller (309) controls the adaptation of the beamform parameters to occur in a predetermined adaptation time interval determined in response to the detection of the attack of speech. The beamformer (303) may generate noise reference signal(s) and the detector (309) may be arranged to detect the attack of speech in response to a comparison of a signal level of the beamformed audio output signal relative to a signal level of the at least one noise reference signal.