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. 27, 2009
Filed:
Sep. 01, 2005
Victor Abrash, Montara, CA (US);
Federico Cesari, Menlo Park, CA (US);
Horacio Franco, Menlo Park, CA (US);
Christopher George, Los Osos, CA (US);
Jing Zheng, Sunnyvale, CA (US);
Victor Abrash, Montara, CA (US);
Federico Cesari, Menlo Park, CA (US);
Horacio Franco, Menlo Park, CA (US);
Christopher George, Los Osos, CA (US);
Jing Zheng, Sunnyvale, CA (US);
SRI International, Menlo Park, CA (US);
Abstract
The present invention relates to a method and apparatus for obtaining complete speech signals for speech recognition applications. In one embodiment, the method continuously records an audio stream comprising a sequence of frames to a circular buffer. When a user command to commence or terminate speech recognition is received, the method obtains a number of frames of the audio stream occurring before or after the user command in order to identify an augmented audio signal for speech recognition processing. In further embodiments, the method analyzes the augmented audio signal in order to locate starting and ending speech endpoints that bound at least a portion of speech to be processed for recognition. At least one of the speech endpoints is located using a Hidden Markov Model.