An arrangement for processing a speech message which uses arbitrary value codes to form time frame excitation signals. The arbitrary value codes, e.g., random numbers, are stored as well as signals indexing the codes and transform domain signals corresponding to the arbitrary codes are generated. The...http://www.google.fr/patents/US4827517?utm_source=gb-gplus-shareBrevet US4827517 - Digital speech processor using arbitrary excitation coding
Digital speech processor using arbitrary excitation coding