Chart of Gain – dB Correlations

Getting a Handle on dB values
Gain Increase Factor dB Alteration Gain Reduction Factor dB Alteration Reduction on 32767 scale
1.0 0.0dB 1.0 0.0dB 32767
1.5 3.5dB 0.7 -3.1dB 22936
2.0 6.0dB 0.5 -6.0dB 16383
2.5 8.0dB 0.4 -8.0dB 13106
3.0 9.5dB 0.35 -9.1dB 11468
3.5 10.9dB 0.3 -10.5dB   9830
4.0 12.0dB 0.25 -12.0dB   8191
8.0 18.1dB 0.125 -18.1dB   4096
16 24.1dB 0.0625 -24.1dB   2047
32 30.1dB 0.03125 -30.1dB   1024
64 36.1dB 0.015626 -36.1dB     512
128 42.1dB 0.0078125 -42.1dB     256
0.0 -96dB (i.e., zero level)      0

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