A Low Power SBR Algorithm for the MPEG-4 Audio Standard and Its DSP Implementation

Shimada O, Tanaka N, Tsushima M, Norimatsu T, Kok Seng C, Kim Hann K, Sua Hong N, Nomura T, Takamizawa Y, Serizawa M. A Low Power SBR Algorithm for the MPEG-4 Audio Standard and Its DSP Implementation. In: AES Convention 116. Audio Engineering Society; 2004. Paper 6048. Available from: https://aes.org/publications/elibrary-page/?id=12680

@inproceedings{Shimada2004_12680,
  author = {Shimada, Osamu and Tanaka, Naoya and Tsushima, Mineo and Norimatsu, Takeshi and Kok Seng, Chong and Kim Hann, Kuah and Sua Hong, Neo and Nomura, Toshiyuki and Takamizawa, Yuichiro and Serizawa, Masahiro},
  title = {{A Low Power SBR Algorithm for the MPEG-4 Audio Standard and Its DSP Implementation}},
  booktitle = {AES Convention 116},
  note = {Paper 6048},
  year = {2004},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12680}
}

TY  - CPAPER
TI  - A Low Power SBR Algorithm for the MPEG-4 Audio Standard and Its DSP Implementation
AU  - Shimada, Osamu
AU  - Tanaka, Naoya
AU  - Tsushima, Mineo
AU  - Norimatsu, Takeshi
AU  - Kok Seng, Chong
AU  - Kim Hann, Kuah
AU  - Sua Hong, Neo
AU  - Nomura, Toshiyuki
AU  - Takamizawa, Yuichiro
AU  - Serizawa, Masahiro
T2  - AES Convention 116
M1  - Paper 6048
PY  - 2004
DA  - 2004/05/06
UR  - https://aes.org/publications/elibrary-page/?id=12680
PB  - Audio Engineering Society
LA  - en
AB  - This paper proposes a Low Power Spectral Band Replication algorithm (LP-SBR) adopted in the MPEG-4 Audio standard. It operates with low computational complexity compared to the conventional SBR algorithm called the High Quality SBR algorithm (HQ-SBR). LP-SBR utilizes real-valued processing instead of complex-valued processing used in HQ-SBR for complexity reduction. To minimize the sound quality degradation caused by this reduction, LP-SBR employs aliasing reduction techniques and a gain compensation technique. Subjective quality test results show that there is no statistical difference between LP-SBR and HQ-SBR when they are incorporated into AAC decoders. A complexity comparison of both SBR decoders implemented on 16-bit fixed-point DSPs shows that an AAC decoder with LP-SBR requires 30% less computational complexity than that with HQ-SBR.
ER  -