Lines Matching refs:subbands
32 * Join 2 subbands and upsample by 2.
33 * So for each 2 subbands sample that goes in, a pair of samples goes out.
43 int32_t subbands[NB_FILTERS];
46 subbands[0] = low_subband_input + high_subband_input;
47 subbands[1] = low_subband_input - high_subband_input;
50 aptx_qmf_filter_signal_push(&signal[i], subbands[1-i]);
57 * Join 4 subbands and upsample by 4.
58 * So for each 4 subbands sample that goes in, a group of 4 samples goes out.
67 /* Join 4 subbands into 2 intermediate subbands upsampled to 2 samples. */
75 /* Join 2 samples from intermediate subbands upsampled to 4 samples. */