FilterSignal       56 libavcodec/aptx.h     FilterSignal outer_filter_signal[NB_FILTERS];
FilterSignal       57 libavcodec/aptx.h     FilterSignal inner_filter_signal[NB_FILTERS][NB_FILTERS];
FilterSignal      165 libavcodec/aptx.h static void aptx_qmf_filter_signal_push(FilterSignal *signal, int32_t sample)
FilterSignal      177 libavcodec/aptx.h static int32_t aptx_qmf_convolution(FilterSignal *signal,
FilterSignal       31 libavcodec/aptxdec.c static void aptx_qmf_polyphase_synthesis(FilterSignal signal[NB_FILTERS],
FilterSignal       32 libavcodec/aptxenc.c static void aptx_qmf_polyphase_analysis(FilterSignal signal[NB_FILTERS],