Analogue systems

can anyone tell me, will the rs230 pass audio signals? or is it for
cvs only?

thanks,
adam

On Fri, 16 May 2003, adamburr1973 wrote:

> can anyone tell me, will the rs230 pass audio signals? or is it for
> cvs only?

You can use both. What is cool with patchable analogue synth is that there
is no difference between a cvs and an audio signal : both are signals !

Arnauld

--- In analogue_systems@yahoogroups.com, Arnauld Michelizza 
<am@z...> wrote:
> On Fri, 16 May 2003, adamburr1973 wrote:
> 
> > can anyone tell me, will the rs230 pass audio signals? or is 
it for
> > cvs only?
> 
It all depends on the module.  Some can handle DC or AC 
without any weirdness. The the purpose of this explanation, let's 
assume that CVs are DC voltages.  I need to make this 
clarification as control voltages can also be LFO outputs, which 
in fact are AC.

Some do not recognize signals that go under zero volts - so they 
come out half rectified (you only get the positive voltage out).  
This is very common in analog modules that incorporate digital 
chips, in that  they are designed to for zero to + volt operation.  
Anythng that goes below that isn't recognized.

In the case of the buffer, while I don't  have one, I would assume 
in that since the envelope generators do in fact output negative 
voltges, that  AC would be fine as well.

The inverse however does not always apply - MOdules looking 
for AC may not see DCs at all. through the use of a de-coupling 
circuit (an electrolytic cap is a good example of one type) signals 
that don't pass both directions of zero volts (AC) will have no 
effect. - they won't even make it past the cap.  There is an reason 
for this, as this type of signal conditioning is intentionally used to 
remove DC voltage offsets.  A perfectly good example of this is 
the new DSP Delay -  because of this type of filtering, you can't 
delay control voltages.

But getting back to the bufffer - while it may in fact pass ACs, it's 
probably not needed.  This buffer was desinged to amplify the 
current drive of control voltage generating devices. The AC 
signals coming from A Sys equipment is plenty loud and I can't 
see you loading it down so much that it attenuates to the point 
that you'll experience problems.

DCs are different.  As all semiconductors have a limit to the 
amount of current they can supply to something else, they can be 
overloaded if you attempt to suck more current out of them. Once 
you exceed their limit, the output starts attenuating or dies out all 
together.  The very worst case you will fry the output section.  It 
simply heats up and burns.  That's

The buffers  were introduced as a means to amplify the current 
carrying capabilities of the devices under heavy load - so it can 
be fanned out to more places without problems.

I hope this helps,

Peter

Hi Adam,

I ran a quick audio test for you as I have two of these.  

There were no problems with the sound quality of a sawtooth wave as I 
swept it up to the limit of my hearing range through the 
buffer/inverter module. I tried the same with the inv output and - no 
problem. An A-B comparison with the un buffered wave showed no audible 
difference but that was the extent of my test as I did not have time 
to record the output and look at the waveforms, also I did not try a 
voltage bias (shift). 

Uses include

Inputing a CV from another synth.

Providing an inverted (mirror image) CV (for chorusing etc.)

Providing extra outputs from a CV source without overloading it

and more.

Hope this helps:-)

Dave.




--- In analogue_systems@yahoogroups.com, "adamburr1973" 
<adamburr1973@y...> wrote:

> can anyone tell me, will the rs230 pass audio signals? or is it for
> cvs only?
> 
> thanks,

yes, that helps a lot.

i have a very small system so if i get this i need to be able to use
it as an audio splitter as well if necessary. i have the rs70 now
but i find that the inverter acts as a lpf even with the slew turned
all the way down and i wanted to make sure that the rs230 didn't have
similar issues with audio signals.

thanks,
adam


--- In analogue_systems@yahoogroups.com, "piperplaysynth" <dave@h...>
wrote:

> Hi Adam,
> 
> I ran a quick audio test for you as I have two of these.  
> 
> There were no problems with the sound quality of a sawtooth wave as I 
> swept it up to the limit of my hearing range through the 
> buffer/inverter module. I tried the same with the inv output and - no 
> problem. An A-B comparison with the un buffered wave showed no audible 
> difference but that was the extent of my test as I did not have time 
> to record the output and look at the waveforms, also I did not try a 
> voltage bias (shift). 
> 
> Uses include
> 
> Inputing a CV from another synth.
> 
> Providing an inverted (mirror image) CV (for chorusing etc.)
> 
> Providing extra outputs from a CV source without overloading it
> 
> and more.
> 
> Hope this helps:-)
> 
> Dave.

--- In analogue_systems@yahoogroups.com, Arnauld Michelizza <am@z...> 
> + sounds. I think it could be a good way to improve everyone's patching
> knowledge. What do you think about that ?

I think that is a very good idea.

Ethan

Hello everybody,

there isn't so much activity in the mailing list. Perhaps we could set a
sort of contest with the "patch of the month" or something like that ?
We could choose a theme every month and every one could provide his patchs
+ sounds. I think it could be a good way to improve everyone's patching
knowledge. What do you think about that ?
Well, every other ideas are welcome !

Arnauld

as a '2-days-away-from-owning-my-1st-as-modular' newbie i think this is a 
great idea :D


bob



On Wed, 21 May 2003, ethanzer0 wrote:

> --- In analogue_systems@yahoogroups.com, Arnauld Michelizza <am@z...>
> > + sounds. I think it could be a good way to improve everyone's patching
> > knowledge. What do you think about that ?
> 
> I think that is a very good idea.
> 
> Ethan
> 
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-- 
bobule@partyvibe.com | www.partyvibe.com/bobule
mobile: 07976 570284 | www.streetbeats.co.uk

I recently sent an email about the idea of setting a contest every month.
Here we are for the 1st edition !
I thought a lot about the sound for the 1st contest. And that was
really not an easy job. First, I thought about classic synth sounds like
"the fatest bass", snare imitation and other bell sounds but I thought it
was not enough original, it was too much "deja vu". It was the same for
patches trying to mimic accoustic instruments (guitar, violin, etc.).
Yesterday, my neighbours were making housework and then, I heard them
piercing the wall, and it suddenly gave me the idea of the Sound of the
Month. This month, we will try to mimic... drill sounds ! Very interesting
sound indeed, with evolving tonalities depending on pressure, rotation
speed and hardness.

There is a dedicated folder in "Files" where you can put all your stuff.
Every sound must be with a text or a picture describing the patch you
created.

You have one month to create your patch. Next month, there will be a poll
to pick the best patch. Nothing to earn except glory and joy to share
knowledge and creativity ! :-)
Reach quickly your knobs and patch cords and may the best patch win !

Arnauld


Note : a lot of cool advices, tips and
tricks at http://www.modularsynth.com/SOS.html

Hi,
Since the announcement of the Contest for the Sound of the month, a
few days ago, there is still no reaction and no patch. That makes me
wonder if the idea of that contest is appropriate...
May I have any feedback ?

Arnauld

hello arnauld,

the idea is quite good. maybe you should give it some more time.
i hope, not all users here are that busy as i am.

best wishes

ingo



--- In analogue_systems@yahoogroups.com, Arnauld Michelizza <am@z...> 
wrote:

> 
> Hi,
> Since the announcement of the Contest for the Sound of the month, a
> few days ago, there is still no reaction and no patch. That makes me
> wonder if the idea of that contest is appropriate...
> May I have any feedback ?
> 
> Arnauld

Hi folks !

For all those who don't know it, I remind them that the contest for
the "sound of the month" is opened until the end of june. There is
still nothing to earn except pleasure to share knowledge with the
other members :-)
Just a detail : this month, the topic is about drill sounds. The goal
is to make the best patch to reproduce that kind of sound with the
highest fidelity.
Reach quickly your knobs and patch cords and may the best patch win !

Arnauld

hello arnauld,

i can only speak for myself, for me it really is a time issue.
there was a lot of work to do during the last few weeks.
maybe i can come around with a patch the next days.
do we have to use as-modules only or can we use some additional
modules from other manufacturers (f.e. doepfer) ?

best wishes

ingo




--- In analogue_systems@yahoogroups.com, Arnauld Michelizza <am@z...> 
wrote:
> 
> 
> Hi list !
> 
> Well... I'm a bit disapointed because there is still no submission.
> Perhaps is it because the lack of time ? Or perhaps because the 
kind of
> sound (drill one) was not enough exciting ?...
> I tried to made a drill sound with my little AS and I uploaded the 
work I
> made. A JPEG file shows the patch that produced that sound. I found 
very
> interesting to try to mimic a precise sound. A lot of fun indeed :-)
> 
> Note : Next month, I'd like to continue that experience with a new
> contest. If you have an idea of a sound to emulate, please, don't 
hesitate

> to submit it on the list.
> Enjoy !
> 
> Arnauld

Hi list !

Well... I'm a bit disapointed because there is still no submission.
Perhaps is it because the lack of time ? Or perhaps because the kind of
sound (drill one) was not enough exciting ?...
I tried to made a drill sound with my little AS and I uploaded the work I
made. A JPEG file shows the patch that produced that sound. I found very
interesting to try to mimic a precise sound. A lot of fun indeed :-)

Note : Next month, I'd like to continue that experience with a new
contest. If you have an idea of a sound to emulate, please, don't hesitate
to submit it on the list.
Enjoy !

Arnauld

Hello ingo,

there's no problem for using additionnal modules. I think that it's better
if the core of the patch is mainly made with AS modules. However, it's
also cool to discover other modules from other manufacturers : it offers
more possibilities to make interesting patches.
I'm very impatient to hear and to see your submission :-)

Arnauld

hello arnauld,

here comes my first attempt. maybe some more samples will follow,
but i have to see if there is enough time for me doing it.

i tried to create a driller that fails to drill into an iron plate.

only the vca of the a109 is used. i think, the a109 can be replaced
by a rs180 vca, when using it's log input. should be similar,
but not identical.

the a180 multiple can be replaced by a rs170 or rs230 or rs20.

the slightest change of parameters (especially on the comb filter
and envelope) lead to dramatic changes in sound. it will be very
hard, finding the same sound again.

best wishes

ingo

Hello Ingo,

Very interesting sound indeed. I particulary like the harshness at the
begining of the sound : it really sounds like a drill suffering
while meeting the metal !

Arnauld