Patent
1994-04-29
1996-10-22
MacDonald, Allen R.
395 23, G10L 506
Patent
active
055685889
ABSTRACT:
A speech processing system and method are disclosed. In one embodiment of the present invention, the system includes at least a maximum likelihood quantization (MLQ) multi-pulse analysis unit operating on a target vector. The MLQ multi-pulse analyses unit typically determines an initial gain level for the multi-pulse sequence and performs single gain multi-pulse analysis (MPA) a number of times, each with a different gain level. The pulse sequence which most closely represents the target vector is provided as an output signal. In another embodiment, the system includes at least a pulse train multi-pulse analysis unit wherein the target vector is modeled as a series of pulse trains. Each pulse train comprises a plurality of single gain pulses, wherein each pulse is at a position which is a pitch value distance apart from the previous pulse in the pulse train. Combinations of maximum likelihood analyses with pulse trains are also part of the present invention.
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patent: 4710959 (1987-12-01), Feldman et al.
patent: 4932;061 (1990-06-01), Kroon et al.
patent: 5007094 (1991-04-01), Hsuen et al.
patent: 5060269 (1991-10-01), Zinser
Digital Speech Processing, Synthesis and Recognition by Sadaoki Furui, Marcel Dekker, inc., New York, NY 1989, section 6.4.2 1989.
Bialik Leon
Flomen Felix
AudioCodes Ltd.
Gunnison Forrest E.
MacDonald Allen R.
Onka Thomas J.
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