200e

Ok I'm stumped.

How do I created an inverted version of a CV to feed to the 281e 
decay? When I have a voltage raising the pitch of an oscillator, I'd 
like an inverted version of that same voltage to decrease the decay 
time of the envelope for that voice.  I realize I can do this by 
creating mirrored interpolated sequences with the 249e, however, I 
would like to do this with the CV out of the MOD Osc.

Anyone?  Buehler?

E

Use a 255 Control Voltage Processor to invert the voltage.

John Loffink
The Microtonal Synthesis Web Site
http://www.microtonal-synthesis.com
The Wavemakers Synthesizer Web Site
http://www.wavemakers-synth.com

> -----Original Message-----
> From: ethanzer0 [mailto:ethanzer0@yahoo.com]
> 
> How do I created an inverted version of a CV to feed to the 281e
> decay? When I have a voltage raising the pitch of an oscillator, I'd
> like an inverted version of that same voltage to decrease the decay
> time of the envelope for that voice.  I realize I can do this by
> creating mirrored interpolated sequences with the 249e, however, I
> would like to do this with the CV out of the MOD Osc.
>

--- In 200e@yahoogroups.com, "John Loffink" <jloffink@a...> wrote:
> Use a 255 Control Voltage Processor to invert the voltage.

I hould have mentioned I am working with 200e modules only.  
According to the Buchla.com website, the 255 is not a 200e module. 
So, with that revised criteria, how does one create an inverted 
voltage for the 281e decay from the CV output of a 259e with just 
200e modules?


tia,
E

> I hould have mentioned I am working with 200e modules only.  
> According to the Buchla.com website, the 255 is not a 200e module. 
> So, with that revised criteria, how does one create an inverted 
> voltage for the 281e decay from the CV output of a 259e with just 
> 200e modules?


The bottom section of the 210e has a "Level" knob with >0 and <0 
LED's. I would assume you can give any voltage a bias, but I 
dunno 'bout inverting it.

I don't believe the 210e inverts. The one at BCM doesn't.  it's just a
attenuator/mixer

The CV matrix can't invert? This seems like a major oversight.

- B (first initial only, right?)

--- In 200e@yahoogroups.com, "John Loffink" <jloffink@a...> wrote:

> Based upon your revised criteria and the available 200e module functions,
> there is no way to do this.
> 
> John Loffink
> The Microtonal Synthesis Web Site
> http://www.microtonal-synthesis.com
> The Wavemakers Synthesizer Web Site
> http://www.wavemakers-synth.com
> 
> 
> > -----Original Message-----
> > From: ethanzer0 [mailto:ethanzer0@y...]
> > 
> > 
> > --- In 200e@yahoogroups.com, "John Loffink" <jloffink@a...> wrote:
> > > Use a 255 Control Voltage Processor to invert the voltage.
> > 
> > I hould have mentioned I am working with 200e modules only.
> > According to the Buchla.com website, the 255 is not a 200e module.
> > So, with that revised criteria, how does one create an inverted
> > voltage for the 281e decay from the CV output of a 259e with just
> > 200e modules?
> >

why not invert the voltage at the 259 so that a lower voltage would 
both raise the pitch and decrese the decay time? not exactly what you 
wanted, but -

> How do I created an inverted version of a CV to feed to the 281e 
> decay? When I have a voltage raising the pitch of an oscillator, I'd 
> like an inverted version of that same voltage to decrease the decay 
> time of the envelope for that voice.  I realize I can do this by 
> creating mirrored interpolated sequences with the 249e, however, I 
> would like to do this with the CV out of the MOD Osc.

Based upon your revised criteria and the available 200e module functions,
there is no way to do this.

John Loffink
The Microtonal Synthesis Web Site
http://www.microtonal-synthesis.com
The Wavemakers Synthesizer Web Site
http://www.wavemakers-synth.com

> -----Original Message-----
> From: ethanzer0 [mailto:ethanzer0@yahoo.com]
> 
> 
> --- In 200e@yahoogroups.com, "John Loffink" <jloffink@a...> wrote:
> > Use a 255 Control Voltage Processor to invert the voltage.
> 
> I hould have mentioned I am working with 200e modules only.
> According to the Buchla.com website, the 255 is not a 200e module.
> So, with that revised criteria, how does one create an inverted
> voltage for the 281e decay from the CV output of a 259e with just
> 200e modules?
>

--- In 200e@yahoogroups.com, "cyaarsoil" <yasi_p@h...> wrote:
> 
> why not invert the voltage at the 259 so that a lower voltage would 
> both raise the pitch and decrese the decay time? not exactly what 
> you wanted, but -

I see what you are suggesting with that approach.  That will work 
just fine as long as the CV output of the 259e is triangle.  But, I 
do not see the effect being possible using the saw wave without an 
invertor.  I'll have to give that a whirl with the triangle.

Thanks for the suggestion!

E

the triangle, sawtooth and square wave outputs all lie in the same 
voltage range (0 to 10 volts), so I'd imagine that if one shape would 
work for you, the others would, too. I tried it out and it worked fine 
for me.. but perhaps I misunderstand your object. 

yasi perera

> I see what you are suggesting with that approach.  That will work 
> just fine as long as the CV output of the 259e is triangle.  But, I 
> do not see the effect being possible using the saw wave without an 
> invertor.  I'll have to give that a whirl with the triangle.