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:
Aug. 21, 2007
Filed:
May. 28, 2003
Tai-huei Huang, Yunlin Hsien, TW;
Shun-ju Chen, Kaohsiung, TW;
Tai-Huei Huang, Yunlin Hsien, TW;
Shun-Ju Chen, Kaohsiung, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The present invention provides a method and a system for determining reliable speech recognition coefficients in noisy environment, which can increase the recognition rate in a noisy environment, such as an in-car environment. The present invention utilizes the feature that most of the energy of in-car noise is concentrated in the low frequency band. Therefore, the input speech signal is filtered to remove the signal at the frequency range in which the noise energy is concentrated. Then, the energy contour of the speech signal is calculated, so as to determine the related speech recognition coefficients. Accordingly, the influence caused by the noise can be reduced, and the recognition rate for the noisy speech can be improved.