[init] volume = 30 [pcm_volume] step_count = 21 step_0 = 0 step_1 = 5 step_2 = 10 step_3 = 15 step_4 = 20 step_5 = 25 step_6 = 30 step_7 = 35 step_8 = 40 step_9 = 45 step_10 = 50 step_11 = 55 step_12 = 60 step_13 = 65 step_14 = 70 step_15 = 75 step_16 = 80 step_17 = 85 step_18 = 90 step_19 = 95 step_20 = 100