Method for generating a spectral noise weighting filter for use

Details Method for generating a spectral noise weighting filter for use Method for generating a spectral noise weighting filter for use

1995-05-04

1996-10-29

Tung, Kee M.

395 229, 395 236, G10L 914

Patent

active

055704530

ABSTRACT:
A digital speech coding method uses an Rth-order filter to model the frequency response of multiple filters, thereby, providing a filter which offers the control of multiple filters without the complexity of multiple filters. The Rth-order filter can be used as a spectral noise weighting filter or a combination of a short-term predictor filter and a spectral noise weighting filter, referred to as the spectrally noise weighted synthesis filter, depending on which embodiment is employed. In general, the method models the frequency response of L Pth-order filters by a single Rth-order filter, where the order R<L.times.P. Thus, this method increases the control of a speech coder filter without a corresponding increase in the complexity of the speech coder.

REFERENCES:
patent: 4346262 (1982-08-01), Willems et al.
patent: 4401855 (1982-08-01), Broderson et al.
patent: 4817157 (1989-03-01), Gerson
patent: 5125030 (1992-06-01), Nomura et al.
B. S. Atal, "Predictive Coding of Speech at Low Bit Rtes", IEEE Trans. on Comm., vol. COM-30, No. 4, pp. 600-614, Apr. 1982.
P. Kroon and B. S. Atal, "Strategies for Improving the Performance of CELP Coders at Low Bit Rates", Proc. of Int. Conf. on Acoustics, Speech and Signal Proc., Apr. 1988, pp. 151-154.
J. D. Markel and A. H. Gray, "Linear Prediction of Speech", Springre-Verlag, 1976, pp. 42-59.
Linear Prediction of Speech, J. D. Markel and A. H. Gray, Jr., Springer-Verlag, Berlin Heidelberg, New York 1976, pp. 50-59.
A Low-Delay CELP Coder for the CCITT 16 kb/s Speech Coding Standard, Juin-Hwey Chen, Senior Member, IEEE, Richard V. Cox, Fellow, IEEE, Yen-Chun Lin, Nikil Jayant, Fellow, IEEE, and Melvin J. Melchner, IEEE Journal on Selected Areas in Communications, vol. 10 No. 5, Jun., 1992.

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