[sdiy] Juno 6/60 SH rate for filter cv

Eric Wood eric.wood74 at gmail.com
Wed Jul 18 07:06:19 CEST 2012


Thanks for the info! I hadn't been aware of that for the "6". Interesting; regardless I feel it a really nice board and never had any kind of issue with it at all. Love it!

On Jul 17, 2012, at 11:56 PM, Andrew Simper <andy at cytomic.com> wrote:

> On 18 July 2012 11:37, Eric Wood <eric.wood74 at gmail.com> wrote:
>> Isn't the only digital part of the J6 the dcos? Why would you get zipper effect with those?
> 
> No, the DCO is not the only digitally controlled part. Everything is
> digitally controlled apart from the final vca, which is controlled
> from an analog envelope generator (that is digitally controlled!).
> 
> The filter cutoff in particular is sample and held and the summing of
> keyboard cv + lfo * depth + env * depth + cutoff fader (perhaps more
> sources, I can't remember) are all done through a muxing -> amp and
> summing -> demuxing -> sample and hold process.
> 
> The other thing that could audibly zipper from lfo / envelope
> modulation is the pwm, it is done through a similar muxing and sample
> and hold method.
> 
> All the best,
> 
> Andy



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