DIGITAL AUDIO SIGNAL INTERPOLATION DEVICE, AND DIGITAL AUDIO SIGNAL INTERPOLATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a digital audio signal interpolation apparatus and a digital audio signal interpolation method, for minimizing an error with respect to a true value as much as possible with simple processing.;SOLUTION: The apparatus selects an interpolation value candidate region for an uncorrectable point, equally divides the interpolation value candidate region into a plurality of divided regions, causes representative values of the divided regions to be added to and passed through a high-pass filter that reproduces a state up to a point immediately preceding the uncorrectable point, selects a divided region in which a value is lowest and further divides the selected region equally into a plurality of divided small regions, causes representative values of the divided small regions to be added to and passed through the high-pass filter that reproduces a state up to the point immediately preceding the uncorrectable point, and takes a representative value of a divided small region in which a value is lowest as the interpolation value of the uncorrectable point.;COPYRIGHT: (C)2010,JPO&INPIT