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功能描述：AT75C1220 G.729A and G.711 Voice Processing Software Module [Updated 1/02. 18 Pages] This software module provides G.729A and G.711 voice processing. a silence compression algorithm. G.711 u-law and a-law voice compression algorithms and an arbitrary tone generator that run on the OakDSPCore subsystem of the AT75C SIAP. All these algorithms have a number of parameters that can be programmed at run time.