hello anders,

you do not need negative values for this. just set
the filter cutoff to the desired minimum and open it
with a positive random voltage. makes no real difference
in the end.

if you want to get a lfo for your system, the a145 has
selectable time range too, one cycle can take several
minutes.

best wishes

ingo



--- In Doepfer_a100@yahoogroups.com , "Anders Ehlin"
<anders_ehlin@h...> wrote:

> Hmm... now here's a lot of options! Anyway, I want sounds to evolve

in both

> directions, for example a filter to open and close again. What I'm

after is

> something that, if we stick to the filter, at random times opens or

closes

> (randomized) the filter with random amount... The 149-1 seems, as

you said,

> very conrollable with its cv inputs! But do I actually need

negative voltage

> to close the filter, or just less amount of positive voltage. Sorry

about

> these very basic questions, this is one of the things you really

don't have

> to make a big thing of when hazzling around with my nord modular,

you pick a

> module, you pick another one and off you go! Not quite the real

thing ;-)

>
> Btw I missed on the 149-1 needs to be triggered, my mistake! But

I'll

> probably put in an LFO in my system anyway, and I have S&H out from

my

> system 100 which should do the trick you were refering to Ingo,

though it

> might not be that slow come to think of it... ah merde, need to

read more!!

>
> Anders
>
>
> >From: Bakis Sirros <synth_freak_2000@y...>
> >Reply-To: Doepfer_a100@yahoogroups.com
> >To: Doepfer_a100@yahoogroups.com
> >Subject: Re: 1 Re: random!!
> >Date: Wed, 25 Aug 2004 06:22:18 -0700 (PDT)
> >
> >
> >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@y...> 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: Tjäna en hacka på gamla prylar
> > > http://tradera.msn.se
> > > > >
> > > >
> > > >
> > >
> >_________________________________________________________________
> > > > Chatt: Träffa nya nätkompisar på Habbo Hotel
> > > > http://habbohotel.msn.se/habbo/sv/channelizer
> > >
> > >
> >
> >
> >=====
> >Bakis Siros
> >Parallel Worlds / Polariton
> >Athens-Greece
> >[Doepfer_a100] group owner
> > http://www.shimarecords.co.uk
> > http://www.ward12.com
> >
> >
> >
> >
> >__________________________________
> >Do you Yahoo!
> >New and Improved Yahoo! Mail - 100MB free storage!
> > http://promotions.yahoo.com/new_mail
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
> _________________________________________________________________
> Hitta rätt på nätet med MSN Sök http://search.msn.se/