Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1983-01-28
1986-11-18
Kemeny, E. S. Matt
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
G10L 500
Patent
active
046240110
ABSTRACT:
An acoustic signal processing circuit extracts input speech pattern data and subsidiary feature data from an input speech signal. The input speech pattern data comprise frequency spectra, whereas the subsidiary feature data comprise phoneme and acoustic features. These data are then stored in a data buffer memory. The similarity measures between the input speech pattern data stored in the data buffer memory and reference speech pattern data stored in a dictionary memory are computed by a similarity computation circuit. When the largest similarity measure exceeds a first threshold value and when the difference between the largest similarity measure and the second largest measure exceeds a second threshold value, category data of the reference pattern which gives the largest similarity measure is produced by a control circuit to correspond to an input speech. When recognition cannot be performed, the categories of the reference speech patterns which respectively give the largest to mth similarity measures are respectively compared with the subsidiary feature data. In this manner, subsidiary feature recognition of the input voice is performed by a subsidiary feature recognition section.
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ICASSP 80 Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing vol. 1 (Apr. 9-11) pp. 19-22.
Asada Haruo
Hirai Shouichi
Nitta Tsuneo
Sakata Tomio
Shinoda Hidenori
Kemeny E. S. Matt
Tokyo Shibaura Denki Kabushiki Kaisha
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