caa a22 4500 47709791X CHVBK 20180405111533.0 cr unu---uuuuu 170330e19961101xx s 000 0 eng 10.1007/BF02996411 doi (NATIONALLICENCE)springer-10.1007/BF02996411 Combining speech coders and entropy coders to reduce the bit rate in the compression of speech [Elektronische Daten] [Karim Ouaissa, Mahiou Khalfaoui, Maurice Bellanger] Réduction de Débit en Compression de la Parole par Combinaison de Codeurs de Parole et Codeurs Entropiques The combination of speech coders and entropy coders is investigated, for bit rate reduction. Three speech coders of the celp (code excited linear prediction) type are considered and the residual correlation in lsp (line spectrum pairs) coefficients and gains in a speech frame is exploited. The lossless entropy coders use Huffman, Lzw (lempel ziv welch) and gzip (LZ-Huffrnan) techniques. The greatest efficiency is provided by the adaptive Huffman approach, with a 15 % gain in each type of compressed parameter and an overall average bit rate reduction of 7 % for the FS1016 coder and 5 % for the Tetra and lbc coders. Springer-Verlag, 1996 Speech coding nationallicence Passband compression nationallicence Predictive coding nationallicence Linear prediction nationallicence Variable length code nationallicence Entropy nationallicence Codage prédictif nationallicence Compression bande passante nationallicence Codage prédictif nationallicence Prédiction linéaire nationallicence Code longueur variable nationallicence Entropie nationallicence Ouaissa Karim Laboratoire d'électronique et communication, cnam, 292, rue Saint-Martin, F-75141 Paris cedex 03, France aut Khalfaoui Mahiou Laboratoire d'électronique et communication, cnam, 292, rue Saint-Martin, F-75141 Paris cedex 03, France aut Bellanger Maurice Laboratoire d'électronique et communication, cnam, 292, rue Saint-Martin, F-75141 Paris cedex 03, France aut Annales Des Télécommunications Springer-Verlag 51/11-12(1996-11-01), 595-601 0003-4347 51:11-12<595 1996 51 12243 https://doi.org/10.1007/BF02996411 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02996411 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ouaissa Karim Laboratoire d'électronique et communication, cnam, 292, rue Saint-Martin, F-75141 Paris cedex 03, France aut NATIONALLICENCE 700 1- Khalfaoui Mahiou Laboratoire d'électronique et communication, cnam, 292, rue Saint-Martin, F-75141 Paris cedex 03, France aut NATIONALLICENCE 700 1- Bellanger Maurice Laboratoire d'électronique et communication, cnam, 292, rue Saint-Martin, F-75141 Paris cedex 03, France aut NATIONALLICENCE 773 0- Annales Des Télécommunications Springer-Verlag 51/11-12(1996-11-01), 595-601 0003-4347 51:11-12<595 1996 51 12243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer