Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1986-09-26
1989-01-10
Salce, Patrick R.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 31, 381 34, G10L 500
Patent
active
047979259
ABSTRACT:
A method for coding speech at low bit rates is disclosed. As compared to the well known stochastic coding method, the method of the present invention requires substantially less computational resources. The reduction of required resources is achieved by utilizing a set of code sequences in which each code sequence is related to the previous code sequence. For example, each succeeding code sequence may be derived from the previous code sequence by removing one or more elements from the beginning of the previous sequence, and adding one or more elements to the end of the previous sequence.
REFERENCES:
patent: 4360708 (1982-11-01), Taguchi et al.
patent: 4535472 (1985-08-01), Tomcik
patent: 4610022 (1986-09-01), Kitayama et al.
patent: 4672670 (1987-06-01), Wang et al.
patent: 4677671 (1987-06-01), Galand et al.
Schroeder et al., "Stochastic Coding of Speech at Very Low Bit Rates: The Importance of Speech Perception," Speed Communication 4 (1985), North-Holland, pp. 155-162.
Schroeder et al., "Code Excited Linear Prediction (CELP): High-Quality Speech at Very Low Bit Rates," IEEE, 1985, pp. 937-940.
Atal et al., "Adaptive Predictive Coding of Speech Signals," Bell System Technical Journal, vol. 49, pp. 1973-1986, Oct., 1970.
Atal et al., "Predictive Coding of Speech at Low Bit Rates," IEEE Trans. Commun., vol. COM-30, 1982, pp. 600-614.
Singhal et al., "Improving Performance of Multi-Pulse LPC Coders at Low Bit Rates," Proc. Int. Conf. on Acoustics, Speech, and Signal Proc., vol. 1, paper No. 1.3, Mar. 1984.
Bell Communications Research Inc.
Falk James W.
Hoff Marc S.
Salce Patrick R.
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