Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1984-02-17
1988-10-25
Kemeny, Emmanuel S.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
G10L 500
Patent
active
047809060
ABSTRACT:
Speaker-independent word recognition method and system for identifying individual spoken words based upon an acoustically distinct vocabulary of a limited number of words. The word recognition system may employ memory storage associated with a microprocessor or microcomputer in which reference templates of digital speech data representative of a limited number of words comprising the word vocabulary are stored. The word recognition system accepts an input analog speech signal from a microphone as derived from a single word-voice command spoken by any speaker. The analog speech signal is directed to an energy measuring circuit and a zero-crossing detector for determining a sequence of feature vectors based upon the zero-crossing rate and energy measurements of the sampled analog speech signal. The sequence of feature vectors are then input to the microprocessor or microcomputer for individual comparison with the feature vectors included in each of the reference templates as stored in the memory portion of the microprocessor or microcomputer. Comparison of the sequence of feature vectors as determined from the input analog speech signal with the feature vectors included in the plurality of reference templates produces a cumulative cost profile for enabling logic circuitry within the microprocessor or microcomputer to make a decision as to the identity of the spoken word. The work recognition system may be incorporated within an electronic device which is also equipped with speech synthesis capability such that the electronic device is able to recognize simple words as spoken thereto and to provide an audible comment via speech synthesis which is related to the spoken word.
REFERENCES:
patent: Re32012 (1985-10-01), Pirz et al.
patent: 3940565 (1976-02-01), Lindenberg
patent: 3946157 (1976-03-01), Dreyfus
patent: 4058676 (1977-11-01), Wilkes et al.
patent: 4107460 (1978-08-01), Grunza et al.
patent: 4388495 (1983-06-01), Hitchcock
patent: 4412098 (1983-10-01), An
patent: 4462080 (1984-07-01), Johnstone et al.
patent: 4513436 (1985-04-01), Nose et al.
patent: 4570232 (1986-02-01), Shikano
patent: 4590605 (1986-05-01), Hataoka et al.
Edwards, G., "A Speech/Speaker Etc.", Conference ICASSP 80 Acoustics, Speech, Denver, Co, 1980.
Rabiner & Schafer, "Digital Processing of Speech Signals", Prentice-Hall, Inc., Englewood Cliffs, N.J., Nov. 16, 1979, pp. 490-499.
Rajasekaran Periagaram K.
Yoshino Toshiaki
Hiller William E.
Kemeny Emmanuel S.
Merrett N. Rhys
Sharp Melvin
Texas Instruments Incorporated
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