[sdiy] 8bits, 10bits or12bits DAC for a midi2cv converter?

m.bareille at free.fr m.bareille at free.fr
Thu Oct 18 21:30:10 CEST 2007


Exact !

On the other side this quantized effect can be musicaly very interesting...

If the DAC have a  10/12/16 bits resolution and be driven by a classic  7bits CC
value ( 128steps ) , this suppose the CPU to compute an interpolation to get all
in between steps values according to the DAC resolution , to avoid the steppy
effect. No a simple thing to implement, i think , specialy on small PIC chips...

In this case the best is to drive the filter ( or like) with  extended
resolution MIDI controlers ( MSB/LSB CC messages or 14bits PB ,etc..  ) and to
use a hi resolution DAC  at least with 12 bits DAC to keep steps as small as
possible...

Cheers,

Marc B.





Selon Rainer Buchty <rainer at buchty.net>:

> On Thu, 18 Oct 2007, Samppa Tolvanen wrote:
>
> > Pitch bend? ect. Marc How have You deald with such details?
>
> Also don't forget filter sweeps. With just 128 or 256 steps they get
> rather, well, steppy.
>
> Rainer
>





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