formula for converting linear taper digital pot to audio taper

[HenrikOlsson]

Hi,
For "only" 127 values I'd probably go with a lookup table. Perhaps something like:

Lookup LinValue, [0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,4,5,5,5,5,6,6,6,7,7,7,7,8,8,8,8,9,9,9,10,_
10,10,11,11,11,11,12,12,12,13,13,13,14,14,15,15,15,16,16,16,17,17,18,18,18,19,19,20,20,21,21,21,22,_
22,23,23,24,24,25,26,26,27,27,28,28,29,30,30,31,32,32,33,34,35,35,36,37,38,39,40,41,42,43,44,45,46,_
47,48,50,51,53,54,56,58,60,62,64,67,69,72,76,80,85,91,98,109,127], LogValue

/Henrik.

[keithv]

Hi,
For "only" 127 values I'd probably go with a lookup table. Perhaps something like:

Lookup LinValue, [0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,4,5,5,5,5,6,6,6,7,7,7,7,8,8,8,8,9,9,9,10,_
10,10,11,11,11,11,12,12,12,13,13,13,14,14,15,15,15,16,16,16,17,17,18,18,18,19,19,20,20,21,21,21,22,_
22,23,23,24,24,25,26,26,27,27,28,28,29,30,30,31,32,32,33,34,35,35,36,37,38,39,40,41,42,43,44,45,46,_
47,48,50,51,53,54,56,58,60,62,64,67,69,72,76,80,85,91,98,109,127], LogValue

Attachment 7825

/Henrik.

Ah, yes! That makes perfect sense. Thank you, Henrik.