Patent ID: 8255232
Filing Date: 2012-08-28
Classification: G10L

Abstract:
1. An audio encoding method, executed by a processor in an audio coding apparatus, for generating a coded frame by encoding an input frame comprising: converting the input frame from time-domain to frequency-domain to generate a plurality of frequency samples, wherein the frequency-domain is partitioned into a plurality of scalefactor bands; calculating a bit allocation corresponding to the plurality of frequency samples in the plurality of scalefactor bands according to at least one parameter; selecting at least one frequency sample in each of the plurality of scalefactor bands, and quantizing a plurality of frequency samples being selected to generate a plurality of scalefactors, wherein a bit number of the quantized frequency samples is corresponding to the bit allocation; performing a quantization iterative loop encoding process to generate the coded frame based on the scalefactors; and searching for one frequency sample having the greatest sample energy in each of the plurality of scalefactor bands, wherein the plurality of frequency samples being selected to be quantized are the frequency samples having the greatest sample energy in each of the plurality of scalefactor bands.