Maximum-take-precedence ACELP: A low complexity search method

Fu Kun Chen, Jur Feru Yang

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The ACELP method makes use of multipulse structure to represent the excitation pulses of residual signal. With the purpose of computational complexity reduction, this paper provides the Maximum-Take-Precedence ACELP (MTP-ACELP) search method under the acceptable degradation in performance. Because the maximum of target signal is preferentially compensated, the degradation of performance would be diminished. By predicting the locations of pulses, the computational complexity would be reduced. We not only reduce the possible pulse combinations in search procedure but also avoid the computation of useless correlation functions before the search procedure. Furthermore, the proposed method is compatible to any ACELP type vocoder, e.g. the G.723.1, G.729, GSM-EFR standards.

Original languageEnglish
Pages (from-to)693-696
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Publication statusPublished - 2001

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering


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