Intelligent Gap Filling in Perceptual Transform Coding of Audio

Disch S, Niedermeier A, Helmrich CR, Neukam C, Schmidt K, Geiger R, Lecomte J, Ghido F, Nagel F, Edler B. Intelligent Gap Filling in Perceptual Transform Coding of Audio. In: AES Convention 141. Audio Engineering Society; 2016. Paper 9661. Available from: https://aes.org/publications/elibrary-page/?id=18465

@inproceedings{Disch2016_18465,
  author = {Disch, Sascha and Niedermeier, Andreas and Helmrich, Christian R. and Neukam, Christian and Schmidt, Konstantin and Geiger, Ralf and Lecomte, Jérémie and Ghido, Florin and Nagel, Frederik and Edler, Bernd},
  title = {{Intelligent Gap Filling in Perceptual Transform Coding of Audio}},
  booktitle = {AES Convention 141},
  note = {Paper 9661},
  year = {2016},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18465}
}

TY  - CPAPER
TI  - Intelligent Gap Filling in Perceptual Transform Coding of Audio
AU  - Disch, Sascha
AU  - Niedermeier, Andreas
AU  - Helmrich, Christian R.
AU  - Neukam, Christian
AU  - Schmidt, Konstantin
AU  - Geiger, Ralf
AU  - Lecomte, Jérémie
AU  - Ghido, Florin
AU  - Nagel, Frederik
AU  - Edler, Bernd
T2  - AES Convention 141
M1  - Paper 9661
PY  - 2016
DA  - 2016/09/06
UR  - https://aes.org/publications/elibrary-page/?id=18465
PB  - Audio Engineering Society
LA  - en
AB  - Intelligent Gap Filling (IGF) denotes a semi-parametric coding technique within modern codecs like MPEG-H-3D-Audio or the 3gpp-EVS-codec. IGF can be applied to fill spectral holes introduced by the quantization process in the encoder due to low-bitrate constraints. Typically, if the limited bit budget does not allow for transparent coding, spectral holes emerge in the high-frequency (HF) region of the signal first and increasingly affect the entire upper spectral range for lowest bitrates. At the decoder side, such spectral holes are substituted via IGF using synthetic HF content generated out of low-frequency (LF) content, and post-processing controlled by additional parametric side information. This paper provides an overview of the principles and functionalities of IGF and presents listening test data assessing the perceptual quality of IGF coded audio material.
ER  -