公开(公告)号：US12236974B2

公开(公告)日：2025-02-25

申请号：US17872909

申请日：2022-07-25

Applicant: Beijing Baidu Netcom Science Technology Co., Ltd.

Inventor： Libiao Yu ,  Guochang Zhang ,  Jianqiang Wei

IPC: G10L25/51 ,  G10L15/16 ,  G10L21/0224 ,  G10L25/18 ,  G10L15/06 ,  G10L21/0208

Abstract: A method and apparatus for processing a signal. An implementation of the method includes: acquiring a reference signal of a to-be-tested voice, the reference signal being a signal output to a voice output device, where the voice output device outputs the to-be-tested voice after obtaining the reference signal; receiving, from a voice input device, an echo signal of the to-be-tested voice, the echo signal being a signal of the to-be-tested voice collected by the voice input device; performing signal preprocessing on the reference signal and the echo signal respectively; and inputting the processed reference signal and the processed echo signal into a pre-trained time delay estimation model, to obtain a time difference between the reference signal and the echo signal output by the time delay estimation model.

公开(公告)号：US20220358951A1

公开(公告)日：2022-11-10

申请号：US17872909

申请日：2022-07-25

Applicant: Beijing Baidu Netcom Science Technology Co., Ltd.

Inventor： Libiao Yu ,  Guochang Zhang ,  Jianqiang Wei

IPC: G10L25/51 ,  G10L25/18 ,  G10L21/0224 ,  G10L15/16

Abstract: A method and apparatus for processing a signal. An implementation of the method includes: acquiring a reference signal of a to-be-tested voice, the reference signal being a signal output to a voice output device, where the voice output device outputs the to-be-tested voice after obtaining the reference signal; receiving, from a voice input device, an echo signal of the to-be-tested voice, the echo signal being a signal of the to-be-tested voice collected by the voice input device; performing signal preprocessing on the reference signal and the echo signal respectively; and inputting the processed reference signal and the processed echo signal into a pre-trained time delay estimation model, to obtain a time difference between the reference signal and the echo signal output by the time delay estimation model.