digital control of analog component question...

[Harry Bissell]

Yeah that's about it....

The troubles start when you want very precise control... you either need a
very good 8 bit DAC (Midi for instance is 0-127 or 7 bit...) or a DAC with
high resolution and a "lookup" table to get the right values...

The other problem is "zipper" or step noise... when you move a value through a
linear range (especially an oscillator or filter sweep) you hear jumps in the
audio (like a zipper...)
Really good programming chops can cover most of this up...

:^) Harry

"Brousseau, Paul E (Paul)" wrote:

> My knowledge of synth engineering is pretty damend small, so this question
> is basic.  What does it take to digitally control analogue devices?  Is it
> simply a matter of sending the digital number to a D-A which goes to the
> control-voltage input on the analog devices?
>
> --PBr