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:
Dec. 21, 2021
Filed:
Apr. 29, 2020
Beijing Xiaomi Intelligent Technology Co., Ltd., Beijing, CN;
Haining Hou, Beijing, CN;
Beijing Xiaomi Intelligent Technology Co., Ltd., Beijing, CN;
Abstract
Provided are an audio signal processing method and device. The method can include acquiring audio signals from at least two sound sources through at least two microphones to obtain multiple frames of original noise signals of the at least two microphones in a time domain, and, for each frame in the time domain, acquiring respective frequency-domain estimated signals of the at least two sound sources according to the respective original noise signals. The method can further include, for each sound source, dividing the frequency-domain estimated signal into frequency-domain estimated components which each corresponds to a frequency-domain sub-band and includes multiple frequency point data in a frequency domain, determining a weighting coefficient of each frequency point in the frequency-domain sub-band, and updating a separation matrix of each frequency point according to the weighting coefficient and obtaining the audio signals based on the updated separation matrices and the original noise signals.