A Time-Scale Modification Algorithm Based on the Subband Time-Domain Technique for Broad-Band Signal Applications

Tan RKC, Lin AHJ. A Time-Scale Modification Algorithm Based on the Subband Time-Domain Technique for Broad-Band Signal Applications. J Audio Eng Soc. 2000;48(5):437-449. Available from: https://aes.org/publications/elibrary-page/?id=12063

@article{Tan2000_12063,
  author = {Tan, Roland K. C. and Lin, Amerson H. J.},
  title = {{A Time-Scale Modification Algorithm Based on the Subband Time-Domain Technique for Broad-Band Signal Applications}},
  journal = {Journal of the Audio Engineering Society},
  volume = {48},
  number = {5},
  pages = {437--449},
  year = {2000},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12063}
}

TY  - JOUR
TI  - A Time-Scale Modification Algorithm Based on the Subband Time-Domain Technique for Broad-Band Signal Applications
AU  - Tan, Roland K. C.
AU  - Lin, Amerson H. J.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 48
IS  - 5
SP  - 437
EP  - 449
PY  - 2000
DA  - 2000/05/06
UR  - https://aes.org/publications/elibrary-page/?id=12063
PB  - Audio Engineering Society
LA  - en
AB  - Time-domain digital time-scale modification algorithms based on the overlap-and-add technique were developed mainly for speech signal applications and may not perform equally well for broad-band audio signals. Broad-band audio signals in general do not have a single 'pitch period' or similar structure to take advantage of, as exists in single-talker speech. Due to the basic assumption of quasi-periodicity in such methods, this means that the best alignment point between two successive frames in the overlapping region may not always be ideal. It results in a distortion in the form of repetitive waveforms, which produce echo and stuttering effects that are audible, especially after time-scale expansion. To overcome this problem, the broad-band signal is first divided into smaller subbands before the overlap-and-add technique is applied. The proposed subband analysis synchronous overlap-and-add (SASOLA) algorithm provides an alternative for time-scale modification of broad-band audio and speech signal applications without the various undesirable artifacts and high computational cost associated with the frequency-domain techniques.
ER  -