Pulse or digital communications – Pulse code modulation
Patent
1994-06-21
1996-08-13
Chin, Stephen
Pulse or digital communications
Pulse code modulation
341 67, 375246, H04B 1404
Patent
active
055464262
ABSTRACT:
The method for executing coding subprocesses and decoding subprocesses calculates a first time interval from a current point to a variable output point of the coded output signals. Similarly, a second time interval from the current point to an output point of the decoded output signals is calculated. Second, a total processing time of a subsequent coding and decoding subprocesses is calculated. The subsequent subprocesses are both allowed to be subsequently executed. Finally, one subprocess to be subsequently executed is selected from the subsequent coding and decoding subprocesses by comparing the total processing time with a smaller one of the first and the second time intervals.
REFERENCES:
patent: 5086439 (1992-02-01), Asai et al.
patent: 5235623 (1993-08-01), Sugiyama et al.
Schroeder et al.,, "Code-Excited Linear Prediction (CELP): High-Quality Speech At Very Low Bit Rates", IEEE, pp. 937-940, (1985).
Chin Stephen
NEC Corporation
Vo Don
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