Description

This application report describes the implementation of a universal DSP module (UDM) to vocoders for a range of bit rates and to modems operating in the voice-band range. The UDM is based on the Texas Instruments (TI(TM)) TMS320C31 DSP. Difficulties in vocoder design are examined as well as measurement results for the HF modem under simulated HF channel environments. The error correction codi