System of digital speech compression based on DSP

The design project of real-time speech coding and decoding system based on TMS320C6711 and G.729A are introduced,and the software and hardware of design process are given.At the high-speed platform based on TMS320C6711 DSP, realization of digital speech signals for real-time input, coding,decoding and output is discussed.After the transplantion of application procedure,other speech functions expansion can also implemented.