| 摘要 |
PROBLEM TO BE SOLVED: To make the output information quantity variable (variable rate) over the entire part of an encoder and to obtain an effect of lessening transmission line traffic, saving transmission power, etc., by varying the order of a synthetic filter according to input signals. SOLUTION: This liner prediction analyzer has a circuit for holding the analysis errors in respective analysis stages, a circuit for calculating a normalization analysis error from the retained analysis errors and a zero order self-correction function, a circuit for holding this normalization analysis error, a circuit for comparing the held normalization analysis error and the previously determined threshold and a circuit for holding the liner prediction coeffts. calculated in the respective analysis stages. The analyzer recursively executes the analysis stage by as much as the predetermined number of times, outputs the liner prediction coefft. held in the stage when the held normalization analysis error becomes smaller than the threshold and the order of this time. When the held normalization analysis error does not become smaller than the threshold, the analyzer outputs the liner prediction coefft. in the final stage and the order of this time. |
