APPARATUS AND METHOD FOR GENERATING AUDIO SUBBAND VALUES ANDAPPARATUS AND METHOD FOR GENERATING TIME-DOMAIN AUDIO SAMPLES

摘要

An embodiment of an apparatus (100) for generating audio subband values i n audio subband channels comprises an analysis windower (110) for windowing a frame (120) of time-domain audio input samples being in a time sequence ex tending from an early sample to a later sample using an analysis window func tion (190) comprising a sequence of window coefficients to obtain windowed s amples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The fir st group (200) of window coefficients is used for windowing later time-domai n samples and the second group (210) of window coefficients is used for wind owing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the window ed samples.