AV_CH_LOW_FREQUENCY_2   90 libavcodec/mlp_parser.c     AV_CH_LOW_FREQUENCY_2,                                  // LFE2
AV_CH_LOW_FREQUENCY_2  180 libavcodec/mlpdec.c     AV_CH_LOW_FREQUENCY_2,                                   // LFE2
AV_CH_LOW_FREQUENCY_2  405 libavdevice/pulse_audio_enc.c     if (channel_layout & AV_CH_LOW_FREQUENCY_2)
AV_CH_LOW_FREQUENCY_2  383 libavfilter/f_ebur128.c         if (chl & (AV_CH_LOW_FREQUENCY|AV_CH_LOW_FREQUENCY_2)) {