This paper describes the study of a new approach to speech digitization at mediunband bit rates of 9.6 to 16 Kb/s. The technique is based on a combination of Time Domain Harmonic Scaling and an Adaptive Residual Coder. Computer simulation studies have shown that this technique is able to produce excellent quality speech at the bit rates in question.

This paper describes the study of an approach to speech digitization at mediumband bit rates of 9.6 kb/s to 16 kb/s for the noisy channels.The technique is based on a combination of Time Domain Harmonic Scaling and an Adaptive Residual Coding. The use of fixed wordsize codewords and the absence of any side information transmission makes the system structure quite simple.Simulation studies have shown that this technique produces communication quality speech at 9.6 kb/s and excellent quality speech at 16 kb/s with a channel bit-error-rate as high as 1%.

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