Lines Matching defs:subbands
32 * Split into 2 subbands and downsample by 2.
34 * split into 2 separate subbands.
44 int32_t subbands[NB_FILTERS];
49 subbands[i] = aptx_qmf_convolution(&signal[i], coeffs[i], shift);
52 *low_subband_output = av_clip_intp2(subbands[0] + subbands[1], 23);
53 *high_subband_output = av_clip_intp2(subbands[0] - subbands[1], 23);
58 * Split 4 input samples into 4 subbands and downsample by 4.
60 * split into 4 separate subbands.
69 /* Split 4 input samples into 2 intermediate subbands downsampled to 2 samples */
77 /* Split 2 intermediate subband samples into 4 final subbands downsampled to 1 sample */