Defined in carb/audio/IAudioPlayback.h

constexpr PlaybackModeFlags carb::audio::fPlaybackModeNoSpatialLowFrequencyEffect = 0x00002000

flag to disable the low frequency effect channel (Speaker::eLowFrequencyEffect) for a spatial voice.

By default, some component of the 3D audio will be mixed into the low frequency effect channel; setting this flag will result in none of the audio being mixed into this channel. This flag may be desirable in cases where spatial sounds have a specially mastered low frequency effect channel that will be played separately. This has no effect on a non-spatial voice; disabling the low frequency effect channel on a non-spatial voice can be done through by setting its mixing matrix.