ISCA Archive ICSLP 1994
ISCA Archive ICSLP 1994

Sbcor spectrum taking autocorrelation coefficients at integral multiples of 1/CF into account

Shoji Kajita, Fumitada Itakura

This paper describes an extension of snbband-autocorrelation (SBCOR) analysis that has been already proposed and shown to be robust against noise. The extended SBCOR analysis is defined by a weighted sum of the autocorrelation coefficients at the integral multiples of 1/CF (center frequency of band pass filter), in order to capture more information about the periodicity included in the speech signal. The experimental results performed by a DTW word recognition indicate that the extended SBCOR analysis is more robust against noise than the conventional SBCOR. The performance of the extended SBCOR is about 8% higher than that of the conventional SBCOR(when Q=1.5), and about 20% higher than that of the smoothed group delay spectrum under SNR OdB. The characteristics of the SB-COR and its extension are also described.


Cite as: Kajita, S., Itakura, F. (1994) Sbcor spectrum taking autocorrelation coefficients at integral multiples of 1/CF into account. Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994), 1051-1054

@inproceedings{kajita94_icslp,
  author={Shoji Kajita and Fumitada Itakura},
  title={{Sbcor spectrum taking autocorrelation coefficients at integral multiples of 1/CF into account}},
  year=1994,
  booktitle={Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994)},
  pages={1051--1054}
}