SOUND_MIXER_ENHANCE  855 include/linux/soundcard.h #define SOUND_MASK_ENHANCE	(1 << SOUND_MIXER_ENHANCE)
SOUND_MIXER_ENHANCE  879 include/linux/soundcard.h #define SOUND_MIXER_READ_ENHANCE	MIXER_READ(SOUND_MIXER_ENHANCE)
SOUND_MIXER_ENHANCE  909 include/linux/soundcard.h #define SOUND_MIXER_WRITE_ENHANCE	MIXER_WRITE(SOUND_MIXER_ENHANCE)