Patent ID: 8902997

Claim:
A method for quantizing a partial autocorrelation (PARCOR) coefficient, comprising: quantizing, by a processor, a PARCOR coefficient K, wherein the quantizing is a step of quantizing a PARCOR coefficient having a larger absolute value with a higher quantization precision, the quantizing of the PARCOR coefficient K further comprises: determining, by the processor, a bit sequence that represents an absolute value L of the PARCOR coefficient K; and obtaining, by the processor, a quantized PARCOR coefficient from a look-up table corresponding to U+V+W bits beginning with a most significant bit in the bit sequence that represents the absolute value L of the PARCOR coefficient K, wherein a value of U bits beginning with the most significant bit in the bit sequence that represents the absolute value L being denoted as W, the PARCOR coefficient K being represented as a value of R bits, the U representing a predetermined integer which is equal to or greater than 1 and smaller than R−(2 U −1), and the V representing a predetermined integer equal to or greater than 0 and smaller than R−(2 U −1)−U.