Source-Controlled Variable Bit Rate Extension for the AMR-WB+ Audio Codec

Lefebvre R, Marty A. Source-Controlled Variable Bit Rate Extension for the AMR-WB+ Audio Codec. In: AES Convention 122. Audio Engineering Society; 2007. Paper 7082. Available from: https://aes.org/publications/elibrary-page/?id=14067

@inproceedings{Lefebvre2007_14067,
  author = {Lefebvre, Roch and Marty, Amélie},
  title = {{Source-Controlled Variable Bit Rate Extension for the AMR-WB+ Audio Codec}},
  booktitle = {AES Convention 122},
  note = {Paper 7082},
  year = {2007},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14067}
}

TY  - CPAPER
TI  - Source-Controlled Variable Bit Rate Extension for the AMR-WB+ Audio Codec
AU  - Lefebvre, Roch
AU  - Marty, Amélie
T2  - AES Convention 122
M1  - Paper 7082
PY  - 2007
DA  - 2007/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14067
PB  - Audio Engineering Society
LA  - en
AB  - This paper presents a source-controlled, variable bit rate extension to the AMR-WB+ standard audio codec. AMR-WB+ allows multi-rate operation and in particular rate switching at every frame. However, the standard does not support source-controlled rate determination since it does not include a signal classifier. The proposed extension includes a signal classifier and rate mapping function for each signal class. Classification is performed at a lower frame rate compared to AMR-WB+, with typically 1 classification decision every second. Significant rate savings can be achieved by encoding speech at lower rates than other signals such as music. Applications include audio broadcasting over packet networks and storage of multimedia signals with mixed signals in the audio track.
ER  -