Audio Bandwidth Extension by Frequency Scaling of Sinusoidal Partials

Zernicki T, Bartkowiak M. Audio Bandwidth Extension by Frequency Scaling of Sinusoidal Partials. In: AES Convention 125. Audio Engineering Society; 2008. Paper 7622. Available from: https://aes.org/publications/elibrary-page/?id=14773

@inproceedings{Zernicki2008_14773,
  author = {Zernicki, Tomasz and Bartkowiak, Maciej},
  title = {{Audio Bandwidth Extension by Frequency Scaling of Sinusoidal Partials}},
  booktitle = {AES Convention 125},
  note = {Paper 7622},
  year = {2008},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14773}
}

TY  - CPAPER
TI  - Audio Bandwidth Extension by Frequency Scaling of Sinusoidal Partials
AU  - Zernicki, Tomasz
AU  - Bartkowiak, Maciej
T2  - AES Convention 125
M1  - Paper 7622
PY  - 2008
DA  - 2008/10/06
UR  - https://aes.org/publications/elibrary-page/?id=14773
PB  - Audio Engineering Society
LA  - en
AB  - This paper describes a new technique of efficient coding of high-frequency signal components as an alternative to Spectral Band Replication. The main idea is to reconstruct the high frequency harmonic structure trajectories by using fundamental frequencies obtained at the encoder side. Audio signal is decomposed into narrow subbands by demodulation based on the local instantaneous frequency of individual partials. High frequency components are reconstructed by modulation of the baseband signals with appropriately scaled instantaneous frequencies. Such approach offers correct synthesis of rapidly changing sinusoids as well as proper reconstruction of harmonic structure in the high-frequency band. This technique performs also a correct energy adjustment of sinusoidal partials. High compression efficiency has been achieved and confirmed by listening tests.
ER  -