8. Redundancy and Irrelevancy


Speech coding is a form of source coding.The aim of source coding is to find a good trade - off between bit rate and fidelity.There are two principls for a one good sense of acievement:

  1. minimize the redundancy in the transmitted representation on of the signal
  2. minimize the transmission of irrelevant information, i.e. minimize the entropy rate of the transmitted signal given a certain threshold on the allowed distortion