ISCA Archive ICSLP 1994
ISCA Archive ICSLP 1994

Speech coding based on adaptive MEL-cepstral analysis for noisy channels

Kazuhito Koishida, Keiichi Tokuda, Takao Kobayashi, Satoshi Imai

In this paper, we examine the robustness of an ADPCM coder based on adaptive mel-cepstral analysis. To improve the noisy channel performance, we use traditional techniques: the leakage factor and sign function. The subjective speech quality of the proposed 16kb/s coder and G.726 coder in terms of the opinion equivalent Q is measured and compared. It is shown that the proposed coder produces much higher quality speech than that of 16kb/s G.726 at BER(Bit Error Rate)=0 and BER=10~3. Although the coder scores 4dB lower than 32kb/s G.726 at BER=0, the improvement of more than 5dB is achieved by the proposed coder over G.726 at BER=10~3.


Cite as: Koishida, K., Tokuda, K., Kobayashi, T., Imai, S. (1994) Speech coding based on adaptive MEL-cepstral analysis for noisy channels. Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994), 2087-2090

@inproceedings{koishida94_icslp,
  author={Kazuhito Koishida and Keiichi Tokuda and Takao Kobayashi and Satoshi Imai},
  title={{Speech coding based on adaptive MEL-cepstral analysis for noisy channels}},
  year=1994,
  booktitle={Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994)},
  pages={2087--2090}
}