| Paper: | SP-P1.3 | ||
| Session: | Speech Coding for Networks / Single-Channel Speech Enhancement | ||
| Time: | Tuesday, May 18, 13:00 - 15:00 | ||
| Presentation: | Poster | ||
| Topic: | Speech Processing: Speech Coding | ||
| Title: | A SCALABLE SPEECH AND AUDIO CODING SCHEME WITH CONTINUOUS BITRATE FLEXIBILITY | ||
| Authors: | Balázs Kövesi; France Télécom R&D | ||
| Dominique Massaloux; France Télécom R&D | |||
| Aurélien Sollaud; France Télécom R&D | |||
| Abstract: | Networks are getting more and more heterogeneous. Scalable codecs are especially suited for such a context as they permit to lower the bitrate in a simple way, at any point of the transmission, for adaptation to network conditions and to the terminal capacities. Classically, scalable codecs are organised in layers and scalability is obtained by sending more or less layers to the decoder. The obtained granularity depends on the layers sizes, and the available bitrates are fixed and limited in number. This paper presents a novel scalable audio coding scheme where the bitrates vary continuously between a minimal and a maximal value, allowing free modification of the bitrate. With this novel approach, all bitrates are valid, sending even one more bit results in different output signal with statistically growing quality. Test results show that this method provides as good or even better quality than that of a not scalable version. | ||
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