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:
Jan. 13, 2004
Filed:
Jan. 30, 2002
Dusan Macho, Schaumburg, IL (US);
Yan Ming Cheng, Schaumburg, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A voice sample characterization front-end suitable for use in a distributed speech recognition context. A digitized voice sample is split between a low frequency path and a high frequency path . Both paths are used to determine spectral content suitable for use when determining speech recognition parameters (such as cepstral coefficients) that characterize the speech sample for recognition purposes. The low frequency path has a thorough noise reduction capability. In one embodiment, the results of this noise reduction are used by the high frequency path to aid in de-noising without requiring the same level of resource capacity as used by the low frequency path