Hi Florian,

Thanks for the good explanation on this, interesting as I own almost
all the rolands except 303 and s100.

>BTW: Increasing the level with higher resonance is nothing new (Roland
>did it already in the TB303, and similar in the System 100). I also
> can
>imagine, that the level drop with higher resonance was a main reason,
>why a level per patch was included to most synths. So everyone can
> adopt
>the level to the resonance for each patch.

I think it was also done within the CEM3394 micro synth chips, used in
akai vx-90 sci sixtrack etc..
From the c3394pdf-1.pdf "Constant Loudness vs Resonance VCF", and was
propbably done in other CEM's too.

With an JX8P it is also possible to get distorted bassdrum sounds (no
extra hardware), probably because of some clever programming in the OS
and the patch (vca) settings. I,ll try to dig up this patch for
demonstrating.

>The really intriguing thing is that the level adopts automatically
> when
>you change the resonance in realtime while you are playing.

Yes, and for that we thank you guys, what a brilliant idea!

Greetings,

Simon

On 2012-02-14 16:12, Florian Anwander wrote:
> Hello Simon
>
>> Wouldnt the same thing apply for a modification of this type in a
>> Juno-1/2 as they have same filters inside?
>> The modification making this possible is software related right?
> The Juno1/2 have slightly different filters (VCF/VCA-combi chip at
> the
> Juno1/2 vs. separate VCF chip and half discrete VCA at the JX3P).
>
> In the JX3P the mod is a software patch. Basically this idea should
> work
> with all synths, which provide a level control per patch, or at least
> a
> level control at the VCA (in opposite to the volume know, which sits
> at
> the output of the synth). It depends on the synth, whether it has to
> be
> done in the software or in the hardware.
>
> For the Juno1/2 there might be even a possibility to make this mod at
> the hardware level: those have a VCA after the chorus board. One
> could
> pick the resonance control voltage from the mainboard and mix it to
> the
> control voltages for this final VCA on the chorus board.
> I don't have a Juno1 or Juno2 and I did not investigate it
> completely,
> but from the first look at the service manual it should be doable.
>
> And last but not least one might add such a VCA in the output to
> every
> synth, which works with voltage controlled resonance.
>
>
>
> BTW: Increasing the level with higher resonance is nothing new
> (Roland
> did it already in the TB303, and similar in the System 100). I also
> can
> imagine, that the level drop with higher resonance was a main reason,
> why a level per patch was included to most synths. So everyone can
> adopt
> the level to the resonance for each patch.
> The really intriguing thing is that the level adopts automatically
> when
> you change the resonance in realtime while you are playing.
>
>
> Florian
>
>
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