公开(公告)号：US20240347035A1

公开(公告)日：2024-10-17

申请号：US18682732

申请日：2022-03-17

申请人： Sony Group Corporation

发明人： Tetsunori Itabashi ,  Shigetoshi Hayashi

IPC分类号： G10K11/178 ,  H04R3/00

CPC分类号： G10K11/17854 ,  G10K11/17881 ,  H04R3/002

摘要： Provided are a signal processing device, a signal processing method, a program, and an acoustic system capable of reducing noise in a state where a microphone is not installed at a position where noise is desired to be reduced.
Provided is a signal processing device including: an observation filter processing unit that generates, on the basis of an output signal from a first error microphone, an estimated output signal obtained using one or more of a plurality of observation filters to estimate an output signal from a second error microphone; and an adaptive filter that generates a noise reduction signal on the basis of an output signal from a reference microphone and the estimated output signal.

公开(公告)号：US12125465B2

公开(公告)日：2024-10-22

申请号：US17429450

申请日：2020-02-04

申请人： SONY GROUP CORPORATION

发明人： Kenichi Makino ,  Kohei Asada ,  Tetsunori Itabashi

IPC分类号： G10K11/178

CPC分类号： G10K11/178

摘要： A noise cancellation signal generation device includes a reference sensor; a speaker that outputs sound based on a noise cancellation signal a memory that records second information for obtaining a filter coefficient of a noise cancellation filter calculated on the basis of first information obtained in consideration of a change in a relative position between the speaker and a noise cancellation point and a noise cancellation processor that acquires the second information from the memory using a signal acquired by a sensor, and generates the noise cancellation signal on the basis of the filter coefficient obtained from the acquired second information and a reference signal acquired by the reference sensor.