公开(公告)号：US20210337306A1

公开(公告)日：2021-10-28

申请号：US16855232

申请日：2020-04-22

申请人： Oticon A/S

发明人： Michael Syskind PEDERSEN ,  Carsten SCHEEL ,  Martin BERGMANN ,  Henrik BAY ,  Morten PEDERSEN ,  Bent KROGSGAARD ,  Jacob MIKKELSEN ,  Stefan GRAM ,  Jan M. DE HAAN ,  Andreas Thelander BERTELSEN

IPC分类号： H04R1/40 ,  H04R25/00

摘要： A sound capture device configured to be worn by a person and/or to be located on a surface is configured to pick up target sound from a target sound source s. The sound capture device comprises a) an input unit providing a multitude of electric input signals, each comprising a target signal component and a noise signal component; b) a directional noise reduction system comprising a beamformer unit coupled to said multitude of input signals and configured to provide an estimate of the target sound s. The beamformer unit comprises b1) target maintaining, reference beamformer providing a current reference signal; and b2) a target cancelling beamformer providing a current target cancelling sign. The directional noise reduction system is configured to operate in at least two modes in dependence of a mode control signal, 1) in a directional mode and 2) in a non-directional, omni-directional mode. The sound capture device further comprises c) antenna and transceiver circuitry for establishing an audio link to another device, and to transmit said estimate of the target sound s to said another device, and d) a mode controller for determining said mode control signal in dependence of said current reference signal and said current target cancelling signal. A method of operating a sound capture device is further disclosed.