or, you could add a negative offset voltage to the
a149-1 output via an a176 and an a138a,or an a176 and
a138c if you want an a149-1 AC output, or an a167
comparator, or, or, or...
bakis.





--- selfoscillate < synaptic_music@... > wrote:

>
> hello anders,
>
> the a149-1 generates a random event when you feed a
> gate signal
> into one of the gate inputs, so it is completely up
> to
> you, how often a random event will appear.
> the random part of the a118 changes permanently,
> so this is probably not what you want.
>
> if you want to smooth the transitions over a very
> long period,
> then you should consider the a170 dual slew limiter.
> it doesn't have vc of slew time, but it has a switch
> for
> the time base, just like the a140 adsr. with this
> you can
> get transitions which evolve over several minutes.
>
> i don't have information about the a117 here in the
> office,
> i have to try it in the studio to be able to say
> more about it.
>
> two additional notes:
> the a149-1 only gives you positive values.
> if you need them to be negative, then you need
> to add an a175 or a138c or a133.
>
> when i need such very slowly evolving random
> voltages,
> then i often use the combination lfo, slew limiter
> and
> sample&hold. every time when i need a new value i
> simply
> trigger the sample&hold. the actual lfo value is
> sampled
> and then slewed by an a170. this solution gives both
> positive and negative values.
>
> best wishes
>
> ingo
>
>
>
> --- In Doepfer_a100@yahoogroups.com , "Anders Ehlin"
> <anders_ehlin@h...> wrote:
> > Hello Ingo!
> >
> > Yeah the 149 seems to be the most versatile, I'll
> check how much
> space I
> > have left, haven't ordered yet.. :-) But do you
> know how low
> density on the
> > signals you can derive from it, If I want to get
> changes in the
> area between
> > 30 secs and 1 minute or so.. And how does the 117
> and 118 compare
> on this
> > I can't find any info on this in the manuals, more
> than that the
> slew
> > limiter can smoothen a signal with up to 10
> seconds.
> >
> > Thanks a lot!/Anders
> >
> >
> > >From: "selfoscillate" <synaptic_music@y...>
> > >Reply-To: Doepfer_a100@yahoogroups.com
> > >To: Doepfer_a100@yahoogroups.com
> > >Subject: 1 Re: random!!
> > >Date: Wed, 25 Aug 2004 11:07:08 -0000
> > >
> > >
> > >hello anders,
> > >
> > >the a117 digital noise module only outputs gate
> signals
> > >with the same level, so it is mainly for
> triggering
> > >other modules or for use as a noise source.
> > >
> > >the a118 gives smooth random voltages, but you
> can't control
> > >the randomness via cv. this is a good application
> for
> > >the a149-1, where randomness and the appearance
> of random
> > >events can be controlled with voltages and gates,
> but the
> > >voltage changes are not smooth, so you should add
> a
> > >slew limiter here. a vc slew limiter gives even
> more
> > >control over the smoothness of the random events.
> > >
> > >from my point of view the combination of a149-1
> and
> > >a171 is best, because it gives the most control.
> > >
> > >the a118 is an alternative, if you want to save
> money and
> > >rack space.
> > >
> > >best wishes
> > >
> > >ingo
> > >
> > >
> > >
> > >
> > >--- In Doepfer_a100@yahoogroups.com , "Anders
> Ehlin"
> > ><anders_ehlin@h...> wrote:
> > > >
> > > > Hi guys!
> > > >
> > > > I can't descide what random module to go for,
> I aim at creating
> > >long
> > > > drones/soundscapes (mainly from incoming
> signals) that evolves
> very
> > >slowly
> > > > but "uncyclic", the random would for example
> triggering slow
> filter
> > >events.
> > > > I've looked at the 117 and 118 but the new
> contender 149-1 also
> > >seems nice.
> > > > Any suggestions Should I get a slew limiter
> to soften the edges
> > >even more
> > > >
> > > > Thanks Anders
> > > >
> > > >
>

_________________________________________________________________

> > > > Auktioner: Tj�na en hacka p� gamla prylar
> http://tradera.msn.se
> > >
> >
> >
>

_________________________________________________________________

> > Chatt: Tr�ffa nya n�tkompisar p� Habbo Hotel
> > http://habbohotel.msn.se/habbo/sv/channelizer
>
>

=====
Bakis Siros
Parallel Worlds / Polariton
Athens-Greece
1 group owner
http://www.shimarecords.co.uk
http://www.ward12.com




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