The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 2021
Filed:
Dec. 10, 2018
Baidu Online Network Technology (Beijing) Co., Ltd, Beijing, CN;
Lei Geng, Beijing, CN;
Baidu Online Network Technology (Beijing) Co., Ltd., Beijing, CN;
Abstract
A speech recognition method, device, apparatus and a computer-readable storage medium are provided. The method includes: starting a part of a microphone array to acquire a first speech signal; performing an echo cancellation process for the first speech signal to obtain a second speech signal; performing wakeup recognition for the second speech signal, to determine whether a wakeup word is included in the second speech signal; starting the microphone array to acquire a third speech signal, in the case that the wakeup word is included in the second speech signal; performing noise reduction for the third speech signal; and performing speech recognition for a noise-reduced signal. Computational load and power consumption during the speech recognition can be greatly reduced, because most processes of the front-end noise reduction algorithm are not started before the wakeup state and only a part of a microphone array is started.