A Biologically-Inspired Low-Bit-Rate Universal Audio Coder

Najaf-Zadeh H, Pichevar R, Thibault L. A Biologically-Inspired Low-Bit-Rate Universal Audio Coder. In: AES Convention 122. Audio Engineering Society; 2007. Paper 7078. Available from: https://aes.org/publications/elibrary-page/?id=14063

@inproceedings{NajafZadeh2007_14063,
  author = {Najaf-Zadeh, Hossein and Pichevar, Ramin and Thibault, Louis},
  title = {{A Biologically-Inspired Low-Bit-Rate Universal Audio Coder}},
  booktitle = {AES Convention 122},
  note = {Paper 7078},
  year = {2007},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14063}
}

TY  - CPAPER
TI  - A Biologically-Inspired Low-Bit-Rate Universal Audio Coder
AU  - Najaf-Zadeh, Hossein
AU  - Pichevar, Ramin
AU  - Thibault, Louis
T2  - AES Convention 122
M1  - Paper 7078
PY  - 2007
DA  - 2007/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14063
PB  - Audio Engineering Society
LA  - en
AB  - We propose a new biologically-inspired paradigm for universal audio coding based on neural spikes. Our approach is based on the generation of sparse 2-D representations of audio signals, dubbed as spikegrams. The spikegrams are generated by projecting the signal onto a set of overcomplete adaptive gammachirp (gammatone with additional tuning parameters) kernels. A masking model is applied to the spikegrams to remove inaudible spikes and to increase the coding efficiency. The paradigm is a first step towards the implementation of a high-quality audio encoder by further processing acoustical events generated in the spikegrams. Upon necessary optimization, our coding system operating at 1 bit/sample for sound sampled at 44.1kHz, is expected to deliver high quality audio for broadcasting, archiving, etc.
ER  -