Datasheet

VS1053b Datasheet
10 OPERATION
For example = -11 means that volume should be decreased by 5.5 dB (−11/2 = −5.5),
and left and right attenuation should be increased by 11. When = 2 volume should be
increased by 1 dB (2/2 = 1.0), and left and right attenuation should be decreased by 2. Because
volume setting can not go above +0 dB, the value should be saturated.
Gain Volume SCI_VOL (Volume-Gain)
-11 (-5.5 dB) 0 (+0.0 dB) 0x0b0b (-5.5 dB)
-11 (-5.5 dB) 3 (-1.5 dB) 0x0e0e (-7.0 dB)
+2 (+1.0 dB) 0 (+0.0 dB) 0x0000 (+0.0 dB)
+2 (+1.0 dB) 1 (-0.5 dB) 0x0000 (+0.0 dB)
+2 (+1.0 dB) 4 (-2.0 dB) 0x0202 (-1.0 dB)
Version: 1.20, 2012-12-03 65