A Bit Reduction Algorithm for Spectral Band Replication Using the Masking Effect

Chon SB, Lee M, Pang HS, Sung KM. A Bit Reduction Algorithm for Spectral Band Replication Using the Masking Effect. In: AES Conference: 34th International Conference: New Trends in Audio for Mobile and Handheld Devices. Audio Engineering Society; 2008. Paper 15. Available from: https://aes.org/publications/elibrary-page/?id=14424

@inproceedings{Chon2008_14424,
  author = {Chon, Sang Bae and Lee, Mingu and Pang, Hee-Suk and Sung, Koeng-Mo},
  title = {{A Bit Reduction Algorithm for Spectral Band Replication Using the Masking Effect}},
  booktitle = {AES Conference: 34th International Conference: New Trends in Audio for Mobile and Handheld Devices},
  note = {Paper 15},
  year = {2008},
  month = aug,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=14424}
}

TY  - CPAPER
TI  - A Bit Reduction Algorithm for Spectral Band Replication Using the Masking Effect
AU  - Chon, Sang Bae
AU  - Lee, Mingu
AU  - Pang, Hee-Suk
AU  - Sung, Koeng-Mo
T2  - AES Conference: 34th International Conference: New Trends in Audio for Mobile and Handheld Devices
M1  - Paper 15
PY  - 2008
DA  - 2008/08/06
UR  - https://aes.org/publications/elibrary-page/?id=14424
PB  - Audio Engineering Society
LA  - en
AB  - Spectral Band Replication (SBR) is a state-of-the-art technology to enhance audio or speech codecs especially at low bitrates based on harmonic redundancy in the frequency domain. With SBR, it is possible to generate high frequency components of a full-band audio signal with a bitrate of a few kbps. In this paper, a bit reduction algorithm for SBR using the Masking Effect and threshold in quiet is proposed. The proposed algorithm reduces the SBR bitrate by modifying the envelope data of SBR in delta-coding scheme so that the modification cannot be perceived in the subjective sense. Experiments show that the proposed algorithm achieves about 10~12 % bit reduction for the envelope data of SBR based on the 3GPP Enhanced aacPlus codec at the bitrate of 24 kbps with no perceptive sound quality degradation
ER  -