G10L 25 - Speech or voice analysis techniques not restricted to a single one of groups

Patents for G10L 25 - Speech or voice analysis techniques not restricted to a single one of groups (4,910)
09/1978
09/26/1978	CA1039407A1 Method and apparatus for the analysis and synthesis of speach signals
06/1978
06/06/1978	US4093821 Speech analyzer for analyzing pitch or frequency perturbations in individual speech pattern to determine the emotional state of the person
05/1978
05/23/1978	US4091237 Bi-Phase harmonic histogram pitch extractor
02/1978
02/14/1978	US4074069 Method and apparatus for judging voiced and unvoiced conditions of speech signal
12/1977
12/13/1977	US4063030 Detection circuit for significant peaks of speech signals
06/1977
06/14/1977	US4028985 Pitch determination and display system
05/1977
05/31/1977	US4027102 Voice versus pulsed tone signal discrimination circuit
01/1977
01/18/1977	US4004096 Process for extracting pitch information
03/1976
03/30/1976	US3947638 Pitch analyzer using log-tapped delay line
02/1976
02/10/1976	US3937899 Tone detector using spectrum parameter estimation