Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1988-05-02
1990-09-11
Harkcom, Gary V.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 45, 381 50, G10L 708, G10L 902
Patent
active
049568655
ABSTRACT:
In a speech recognizer, for recognizing unknown utterances in isolated-word speech or continuous speech, improved recognition accuracy is obtained by augmenting the usual spectral representation of the unknown utterance with a dynamic component. A corresponding dynamic component is provided in the templates with which the spectral representation of the utterance is compared. In preferred embodiments, the representation is mel-based cepstral and the dynamic components comprise vector differences between pairs of primary cepstra. Preferably the time interval between each pair is about 50 milliseconds. It is also preferable to compute a dynamic perceptual loudness component along with the dynamic parameters.
REFERENCES:
patent: 3582559 (1971-06-01), Hitchcock et al.
patent: 4058676 (1977-11-01), Wilkes et al.
patent: 4394538 (1983-07-01), Warren et al.
patent: 4590605 (1986-05-01), Hataoka et al.
patent: 4601054 (1986-07-01), Watari et al.
patent: 4624011 (1986-11-01), Watanabe et al.
Kjell Elenius and Mats Blomberg, "Effects of Emphasizing Transitional or Stationary Parts of the Speech Signal in a Discrete Utterance Recognition System", IEEE Proceedings of the ICASSP, 1982, pp. 535-538.
Davis and Mermelstein, "Comparison of Parametric Representations for Monosyllabic Word Recognition in Continnously Spoken Sentences", IEEE Transactions on ASSP, vol. ASSP-28, No. 4, Aug. 1980, pp. 357-366.
Lamel et al, "An Improved Endpoint Detector for Isolated Word Recognition", IEEE Transactions on ASSP, vol. ASSP-29, No. 4, Aug. 1981, pp. 777-785.
Gupta Vishwa N.
Lennig Matthew
Mermelstein Paul
Harkcom Gary V.
Knepper David D.
Northern Telecom Limited
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-1189823