SOUND_MIXER_TREBLE
{ AudioNtreble, SOUND_MIXER_TREBLE },
#define SOUND_MIXER_READ_TREBLE MIXER_READ(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_WRITE_TREBLE MIXER_WRITE(SOUND_MIXER_TREBLE)
#define SOUND_MASK_TREBLE (1 << SOUND_MIXER_TREBLE)