A Unified Transient Detector for Enhanced aacPlus Encoder

Boon Poh N, George S, Kurniawati E, Samsudin, Sattar F. A Unified Transient Detector for Enhanced aacPlus Encoder. In: AES Convention 120. Audio Engineering Society; 2006. Paper 6807. Available from: https://aes.org/publications/elibrary-page/?id=13611

@inproceedings{BoonPoh2006_13611,
  author = {Boon Poh, Ng and George, Sapna and Kurniawati, Evelyn and Samsudin,  and Sattar, Farook},
  title = {{A Unified Transient Detector for Enhanced aacPlus Encoder}},
  booktitle = {AES Convention 120},
  note = {Paper 6807},
  year = {2006},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13611}
}

TY  - CPAPER
TI  - A Unified Transient Detector for Enhanced aacPlus Encoder
AU  - Boon Poh, Ng
AU  - George, Sapna
AU  - Kurniawati, Evelyn
AU  - Samsudin,
AU  - Sattar, Farook
T2  - AES Convention 120
M1  - Paper 6807
PY  - 2006
DA  - 2006/05/06
UR  - https://aes.org/publications/elibrary-page/?id=13611
PB  - Audio Engineering Society
LA  - en
AB  - Enhanced aacPlus audio codec is a combination of MPEG-4 Advanced Audio Coding (AAC), Spectral Band Replication (SBR) and Parametric Stereo (PS). To deal with transient signal, SBR and AAC employ separate transient detectors, although both detectors basically perform detection on the same signal. This paper presents an idea of a low-complexity transient detector which operates in PS encoder. It performs online detection at the same time as PS spatial parameter extraction and takes advantage of some computations performed for subband grouping. Testing on a few percussive solo instrument signals and percussive mixture shows good transient information matching with the transient information generated by the original SBR and AAC detectors, with much less computational requirements. This implies that complexity of the encoder can be reduced by replacing both detectors with the proposed unified low-complexity detector.
ER  -