Autoregressive Modelling of Hilbert Envelopes for Wide-Band Audio Coding

Ganapathy S, Garudadri H, Hermansky H, Motlicek P. Autoregressive Modelling of Hilbert Envelopes for Wide-Band Audio Coding. In: AES Convention 124. Audio Engineering Society; 2008. Paper 7481. Available from: https://aes.org/publications/elibrary-page/?id=14611

@inproceedings{Ganapathy2008_14611,
  author = {Ganapathy, Sriram and Garudadri, Harinath and Hermansky, Hynek and Motlicek, Petr},
  title = {{Autoregressive Modelling of Hilbert Envelopes for Wide-Band Audio Coding}},
  booktitle = {AES Convention 124},
  note = {Paper 7481},
  year = {2008},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14611}
}

TY  - CPAPER
TI  - Autoregressive Modelling of Hilbert Envelopes for Wide-Band Audio Coding
AU  - Ganapathy, Sriram
AU  - Garudadri, Harinath
AU  - Hermansky, Hynek
AU  - Motlicek, Petr
T2  - AES Convention 124
M1  - Paper 7481
PY  - 2008
DA  - 2008/05/06
UR  - https://aes.org/publications/elibrary-page/?id=14611
PB  - Audio Engineering Society
LA  - en
AB  - Frequency Domain Linear Prediction (FDLP) represents the technique for approximating temporal envelopes of a signal using autoregressive models. In this paper, we propose a wide-band audio coding system exploiting FDLP. Specifically, FDLP is applied on critically sampled sub-bands to model the Hilbert envelopes. The residual of the linear prediction forms the Hilbert carrier, which is transmitted along with the envelope parameters. This process is reversed at the decoder to reconstruct the signal. In the objective and subjective quality evaluations, the FDLP based audio codec at 66 kbps provides competitive results compared to the state-of-art codecs at similar bit-rates.
ER  -