A comparative study of LPC parameter representations and quantisation schemes for wideband speech coding

@article{So2007ACS,
  title={A comparative study of LPC parameter representations and quantisation schemes for wideband speech coding},
  author={Stephen So and Kuldip K. Paliwal},
  journal={Digital Signal Processing},
  year={2007},
  volume={17},
  pages={114-137}
}
In this paper, we provide a review of LPC parameter quantisation for wideband speech coding as well as evaluate our contributions, namely the switched split vector quantiser (SSVQ) and multi-frame GMM-based block quantiser. We also compare the performance of various quantisation schemes on the two popular LPC parameter representations: line spectral frequencies (LSFs) and immittance spectral pairs (ISPs). Our experimental results indicate that ISPs are superior to LSFs by 1 bit/frame in… CONTINUE READING
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