| Paper: | SP-P1.4 | ||
| 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 MULTIPLE DESCRIPTION SPEECH CODER BASED ON AMR-WB FOR MOBILE AD HOC NETWORKS | ||
| Authors: | Hui Dong; University of California, Santa Barbara | ||
| Allen Gersho; University of California, Santa Barbara | |||
| Jerry Gibson; University of California, Santa Barbara | |||
| Vladimir Cuperman; University of California, Santa Barbara | |||
| Abstract: | To address the challenging task of achieving effective voice communication over mobile ad hoc networks (MANETs), we introduce a new multiple description (MD) speech coder based on the AMR-WB standard. The MD coder splits the bitstream of the AMR-WB coder into two redundant sub-streams by directly selecting overlapping subsets of encoded data generated for each frame. The sub-streams are transmitted on different network paths. When both sub-streams arrive at the decoder, an output identical to that of AMR-WB is recovered. If only one substream arrives at the decoder, degraded but still acceptable speech quality is obtained. The performance of the multiple description coding system is tested for MANETS with a network simulator and an informal listening test. The results demonstrate that this approach makes effective use of the channel capacity and provides reliable end-to-end connections for voice communication in MANETs. | ||
| Back | |||
Home -||-
Organizing Committee -||-
Technical Committee -||-
Technical Program -||-
Plenaries
Paper Submission -||-
Special Sessions -||-
ITT -||-
Paper Review -||-
Exhibits -||-
Tutorials
Information -||-
Registration -||-
Travel Insurance -||-
Housing -||-
Workshops