Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1990-12-14
1991-10-29
Kemeny, Emanuel S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 43, G10L 500
Patent
active
050621378
ABSTRACT:
Power information from an input signal is used to detect the presence of speech. A reference point is established by the power information as the moment of detection of the start of speech. The end of a processing period for speech recognition is determined by a power information occurring after end of speech, so that feature parameters are extracted from the signal during the processing period having start and end points determined by the power information. Standard speech patterns of particular preset words are determined and similarities between the extracted feature parameters and the standard patterns are calculated and mutually compared. The selected preset word corresponds to a maximum of the similarities obtained during the processing period selected in accordance with the power information. The selected word is then outputted as the recognition result. Selection of the process time in accordance with the power information permits exclusion of some similarities in the speech recognition process, thereby preventing erroneous recognition which could occur in a long word having a portion similar to a short word.
REFERENCES:
patent: 3816722 (1974-06-01), Sakoe et al.
patent: 4712242 (1987-12-01), Rajasekaran et al.
patent: 4751737 (1988-06-01), Gerson
Proceedings of ICASSP: "A Telephone Speech Recognition System Using Word Spotting Technique Based on Statistical Measure", by T. Kimura et al, 27.16.1, Apr. 1987, pp. 1175-1178.
Kimura Tatsuya
Watanabe Taisuke
Kemeny Emanuel S.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Method and apparatus for speech recognition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for speech recognition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for speech recognition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1404620