Defined in carb/audio/IAudioPlayback.h

constexpr PlaybackModeFlags carb::audio::fPlaybackModeUseDoppler = 0x00000010

flag to indicate whether Doppler calculations should be performed on this sound.

This is ignored for non-spatial sounds. When true, the Doppler calculations will be automatically performed for this voice if it is moving relative to the listener. If neither the emitter nor the listener are moving, the Doppler shift will not have any affect on the sound. When false, the Doppler calculations will be skipped regardless of the relative velocities of this emitter and the listener.