Patent ID: 8024197
Filing Date: 2011-09-20
Classification: G10L

Abstract:
1. A computerized sampling rate conversion method accomplished via a processor which increases the sampling rate of a discrete audio signal sampled at a predetermined sampling rate by performing mapping using a fractal interpolation function, the computerized sampling rate conversion method comprising: dividing an audio signal portion formed by a predetermined number of sampling data items into a plurality of interpolation intervals; determining, on the audio signal portion, mapping points, the number of which is in accordance with the degree of increase in the sampling rate; calculating, for the respective interpolation intervals, mapping parameters for performing the mapping using the fractal interpolation function on the mapping points; and performing, in all of the interpolation intervals, the mapping using the fractal interpolation function on the mapping points by using the mapping parameters according to the respective interpolation intervals, to thereby generate new sampling data items via the processor.