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. 03, 2005
Filed:
Sep. 26, 2003
Robert Boman, Thousand Oaks, CA (US);
Luca Rigazio, Santa Barbara, CA (US);
Brian Hanson, Goleta, CA (US);
Rathinavelu Chengalvarayan, Santa Barbara, CA (US);
Robert Boman, Thousand Oaks, CA (US);
Luca Rigazio, Santa Barbara, CA (US);
Brian Hanson, Goleta, CA (US);
Rathinavelu Chengalvarayan, Santa Barbara, CA (US);
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
System speakers are switched to function as sound input transducers to improve recognizer performance and to support recognizer features. A crossbar switch is selectively activated, either manually or under software control, to allow system loudspeakers to function as sound input transducers that supplement the recognition system microphone or microphone array. Using loudspeakers as 'microphones' improves speech recognition in noisy environments, thus attaining better recognition performance with little added system cost. The loudspeakers, positioned in physically separate locations also provide spatial information that can be used to determine the location of the person speaking and thereby offer different functionality for different persons. Acoustic models are selected based on environmental and vehicle operating conditions and may be adapted dynamically using ambient information obtained using the loudspeakers as sound input transducers.