SOUND_MIXER_BASS
{ AudioNbass, SOUND_MIXER_BASS },
#define SOUND_MIXER_READ_BASS MIXER_READ(SOUND_MIXER_BASS)
#define SOUND_MIXER_WRITE_BASS MIXER_WRITE(SOUND_MIXER_BASS)
#define SOUND_MASK_BASS (1 << SOUND_MIXER_BASS)