Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1985-06-27
1989-01-17
Kemeny, Emanuel S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
G10L 500
Patent
active
047992620
ABSTRACT:
In a speech recognition system disclosed herein, acoustic speech waveforms are initially analyzed to obtain, at successive sample times, digital frames of speech information. This initial analysis may, for example, be performed by multi-channel filtering or linear predictive encoding. Stored in the apparatus is a list of representative standard frames, represented by coded indices, together with a table of difference values which represent the vector distances between each standard frame in the list and all other standard frames. For each token (vocabulary) word which is to be recognized, there is stored a sequence of standard frame indices which represent that token word. As each sample frame is generated, a representative standard frame is selected which best represents the sample frame. The difference values which pertain to the representative standard frame are then scanned for all frames defining all token words and, during the scanning, an accumulated value corresponding to each possible matching pair of token frame and sample frame is incremented by a function of the appropriate distance value and the new accumulated value is stored. On the basis of the relative values of the various accumulating values, token words can then be matched to the sample speech.
REFERENCES:
patent: 3816722 (1974-06-01), Sakoe et al.
patent: 4092493 (1978-05-01), Abiner et al.
patent: 4256924 (1981-03-01), Sakoe
patent: 4319221 (1982-03-01), Sakoe
patent: 4601054 (1986-07-01), Watari et al.
Bradner Scott
Feldman Joel A.
Ganong, III William F.
Kemeny Emanuel S.
Kurzweil Applied Intelligence, Inc.
Pahl Jr. Henry D.
LandOfFree
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 Speech recognition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speech recognition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2416615