Patent
1974-08-09
1976-03-23
Claffy, Kathleen H.
G10L 100
Patent
active
039461572
ABSTRACT:
In an apparatus for speech recognition, intended for controlling machines, spoken words are synthesized from two to twelve phoneme classes. Phonemes are recognized by analysis of speech sounds, measuring and comparing energy and time-rate of change of energy in certain frequency bands. Words are recognized by further logic means analyzing phoneme classes.
One particular feature determines the plosive class "T" versus the fricative class "S" by measuring energy rise-time.
REFERENCES:
patent: 3238301 (1966-03-01), Dreyfus
patent: 3553372 (1971-01-01), Wright
patent: 3619509 (1971-11-01), Barger
patent: 3679830 (1972-07-01), Uffelman et al.
patent: 3838217 (1974-09-01), Dreyfus
Claffy Kathleen H.
Kemeny E. S.
Kleeman Werner W.
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