Informed postprocessing for auditory roughness removal for low-bitrate audio coders

van de Par S, Disch S, Niedermeier A, Edler B. Informed postprocessing for auditory roughness removal for low-bitrate audio coders. In: AES Convention 151. Audio Engineering Society; 2021. Paper 10534. Available from: https://aes.org/publications/elibrary-page/?id=21498

@inproceedings{vandePar2021_21498,
  author = {van de Par, Steven and Disch, Sascha and Niedermeier, Andreas and Edler, Bernd},
  title = {{Informed postprocessing for auditory roughness removal for low-bitrate audio coders}},
  booktitle = {AES Convention 151},
  note = {Paper 10534},
  year = {2021},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=21498}
}

TY  - CPAPER
TI  - Informed postprocessing for auditory roughness removal for low-bitrate audio coders
AU  - van de Par, Steven
AU  - Disch, Sascha
AU  - Niedermeier, Andreas
AU  - Edler, Bernd
T2  - AES Convention 151
M1  - Paper 10534
PY  - 2021
DA  - 2021/10/06
UR  - https://aes.org/publications/elibrary-page/?id=21498
PB  - Audio Engineering Society
LA  - en
AB  - In perceptual audio coding using very low bitrates, modulation artifacts can be introduced onto tonal signal components, which are often perceived as auditory roughness. These artifacts may occur for instance due to quantization errors or may be added when using an audio bandwidth extension, which sometimes causes an irregular harmonic structure at the borders of replicated bands. Especially, the roughness artifacts due to quantization errors are difficult to mitigate without investing considerably more bits in encoding of tonal components. We propose a novel technique to remove these roughness artifacts at the decoder side controlled by a small amount of guidance information transmitted by the encoder.
ER  -