Patent
1990-10-03
1993-08-10
Fleming, Michael R.
G10L 904
Patent
active
052356701
ABSTRACT:
The generation of multipulse excitation codes by digitizing an original speech, partitioning the digitized signal into a number of samples, pre-emphasizing the samples, producing linear predictive reflection coefficients from said samples, quantizing these reflection coefficients, converting the quantized reflection coefficients to spectral coefficients and subjecting the spectral coefficients to pitch analysis to obtain a spectral residual signal.
REFERENCES:
patent: 4815134 (1989-03-01), Picone et al.
patent: 4991213 (1991-02-01), Wilson
patent: 5001759 (1991-03-01), Fukui
B. S. Atal and J. R. Remde, "A New Model of LPC Excitation for Producing Natural-Sounding Speech at Low Bit Rates;" Proc. ICASSP '82, pp. 614-617, Apr. 1982.
S. Singhal and B. S. Atal, "Improving Performance of Multi-Pulse Coders at Low Bit Rates," Proc. ICASSP '84, paper 1.3, Mar. 1984.
M. Berouti et al., "Efficient Computation and Encoding of the Multipulse Excitation for LPC," Proc. ICASSP '84, paper 10.1 Mar. 1984.
H. Alrutz, "Implementation of a Multi-Pulse Coder on a Single Chip Floating-Point Signal Processor," Proc. ICASSP '86, paper 44.3 Apr. 1986.
Bellamy, John. Digital Telephony, John Wiley & Sons, Inc., NY, 1991, pp. 153-154.
Lin Daniel
McCarthy Brian M.
Doerrler Michelle
Fleming Michael R.
InterDigital Patents Corporation
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