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:
Oct. 25, 2022
Filed:
Mar. 31, 2020
Applicant:
Qnap Systems, Inc., New Taipei, TW;
Inventor:
Wei Wei Hsiung, New Taipei, TW;
Assignee:
QNAP SYSTEMS, INC., New Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 21/0216 (2013.01); H04R 3/04 (2006.01); G06N 20/20 (2019.01); G06N 3/04 (2006.01); G06N 3/08 (2006.01);
U.S. Cl.
CPC ...
G10L 21/0216 (2013.01); G06N 3/0454 (2013.01); G06N 3/0481 (2013.01); G06N 3/08 (2013.01); G06N 20/20 (2019.01); H04R 3/04 (2013.01);
Abstract
A speech enhancement method and a speech enhancement system are provided. The speech enhancement method performs two-stage noise suppression by using digital signal processing and neural network approach. The first-stage noise suppression generates artifact signals by reducing stationary noise in the digital audio signals. The second-stage noise suppression performs voice activity detection and further reduces non-stationary noise in the artifact signals. The result of the voice activity detection is fed back to establish or update a noise model used in the first-stage noise suppression.