SOUND_MIXER_ENHANCE  847 include/uapi/linux/soundcard.h #define SOUND_MASK_ENHANCE	(1 << SOUND_MIXER_ENHANCE)
SOUND_MIXER_ENHANCE  871 include/uapi/linux/soundcard.h #define SOUND_MIXER_READ_ENHANCE	MIXER_READ(SOUND_MIXER_ENHANCE)
SOUND_MIXER_ENHANCE  901 include/uapi/linux/soundcard.h #define SOUND_MIXER_WRITE_ENHANCE	MIXER_WRITE(SOUND_MIXER_ENHANCE)