ESO_GAIN_TO_6BIT
v = ESO_GAIN_TO_6BIT(AUDIO_MAX_GAIN / 2);
lgain = rgain = ESO_GAIN_TO_6BIT(
lgain = ESO_GAIN_TO_6BIT(
rgain = ESO_GAIN_TO_6BIT(
ESO_GAIN_TO_6BIT(