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:
May. 07, 2013
Filed:
Feb. 10, 2005
Alexander Fischer, Aachen, DE;
Rolf Dieter Bippus, Lemiers, NL;
Alexander Fischer, Aachen, DE;
Rolf Dieter Bippus, Lemiers, NL;
Nuance Communications, Inc., Burlington, MA (US);
Abstract
The invention describes a method and a system for generating training data (D) for an automatic speech recogniser () for operating at a particular first sampling frequency (f), comprising steps of deriving spectral characteristics (S) from audio data (D) sampled at a second frequency (f) lower than the first sampling frequency (f), extending the bandwidth of the spectral characteristics (S) by retrieving bandwidth extending informationfrom a codebook (), and processing the bandwidth extended spectral characteristics (S) to give the required training data (D). Moreover a method and a system () for generating a codebook () for extending the bandwidth of spectral characteristics (S) for audio data (D) sampled at a second sampling frequency (f) to spectral characteristics (S) for a first sampling frequency (f) higher than the second sampling frequency (f) are described.