Adaptive differential pulse code modulation system

Details Adaptive differential pulse code modulation system Adaptive differential pulse code modulation system

H - Electricity

04

B

354/68

H04B 14/06 (2006.01)

Patent

CA 1288867

ADAPTIVE DIFFERENTIAL PULSE CODE MODULATION SYSTEM ABSTRACT OF THE DISCLOSURE An adaptive differential pulse code modulation system includes an adaptive quantizer and an adaptive predictor which have a coding characteristic optimized to a voice signal, and a quantizer and a predictor which have a coding characteristic optimized to a voice band MODEM signal. This system is normally used as a coding system optimized to the voice signal, and when this system detects a MODEM training signal, it becomes a coding system optimized to the MODEM signal.

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