[sdiy] CV to Expo in a processor

[Neil Johnson]

Hi Tim,

> I am planning an oscillator using a DCO and having volt per octave CV input. So naturally I am looking at how to take values from the ADC and convert them to increment values that produce the needed frequencies. My first take was to have a table with values for each semitone and interpolate in between values. This leads to a maximum frequency error of 0.217 cents, and the error is always flat. Is this acceptable, or should I increase the size of the table? What is an acceptable error?

I seem to recall a CV DAC tutorial from Paul Schreiber where 6 cents
error was deemed the acceptable worst case error, so I reckon your
table is OK as it is.

Cheers,
Neil
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