Doepfer

Hey, Peter -- awesome post.  Sound files -- any kind of sound files -- would
be very interesting to hear, if you get a chance.  It's easier to get the
implications in the context of an mp3.

Maybe post this to AH too?  The absurd attitude toward Doepfer of a lot of
voices on that list sort of burns my ass.  I mean, is Doepfer or is Doepfer
not offering a truly tantalizing flight of great new modules?

Come to think of it, I can just see the Konkuro response:  "Random voltages
are useless!  This has nothing to do with music!  It's a module for morons!
All you need is 1/2 an oscillator, a bandpass filter, and a baked potato, as
long as they all have 1/4" jacks!"


> -----Original Message-----
> From: (i think you can figure that out)
> [mailto:petergrenader@hotmail.com]
> Sent: Wednesday, December 24, 2003 12:46 PM
> To: Doepfer_a100@yahoogroups.com
> Subject: [Doepfer_a100] A-149- fist impressions
>
>
> Hello to list.  Sorry I've been away so long.
>
> Yesterday I took delivery of the new 149 Quantized/Stored
> Random Voltages and I thought I'd inflict you all with my first
> impressions..
>
> Interesting little bug indeed.
>
> As always, I am the WORST when it comes to reading manuals
> and spent about an hour with it before I downloaded Dieters
> instructions.  Once I did, things that I was noticed were 'oddly
> related'  made a lot more sense and I suggest to the lovers of all
> things random out there that you do the download first, because
> if you leave it to Don Buchla's typically cryptic graphics (which
> Dieter also incorporated), like me you won't really have a clue
> what is actually going on.
>
> The top half first:
>
> The top half of the 149 consists of two separate outputs of
> quantized stepped random voltages.  Given that both run off the
> same random source, they track each other in a remarkable way,
> which again is modeled after the characteristics of the  Buchla
> 266.  The top output  (n+1) is quantized in 1V increments and the
> bottom one (n squared)  in 1/12 volt increments.  Connected to
> the 1V/oct input of a VCO, this means that one is giving you
> octaves and the other semitones - and because both run off the
> same random source, they track one another.  Connecting two
> VCOs (one to each of the two quantized outputs) will yield some
> intriguing counterpoints which every once in a while resolve
> themselves to unisons.
>
> There is a pot which controls the depth of the spread which can
> also be controlled by an external input. The level of this VC can
> be attenuated manually with its level pot.
>
> One thing to mention: the 149, at least mine, reacts to the
> TRAILING EDGE of the incoming clock.  If you want your
> envelope to to track these voltage changes, you're going to have
> to invert its trigger (an 165 being the easiest solution) to get it in
> sync with what's coming out of the 149.  It took me a while to
> realize this as I thought at first the n squared out was frequency
> doubled from n+1 ( the second reacting tto both rising and failing
> edges).
>
> Outside of the usual applications, my immediate thought was
> using the N+1 out to control the 1V/oct VC input of an LFO used
> to pace a sound event, thus rendering random musical rhythmic
> intervals.  Being a big fan of this type of control, I have a pretty
> good idea where the n+1 is going to get a lot of use.
>
> The bottom half:
>
> The bottom half behaves in a less predicable manner than the
> quantized section.  It's outputs relfect a true random selection of
> 256 available levels generated within the module, also in
> accordance with the conventions of the Buchla 266.  So, yeah, it's
> not true random in that there are only 256 possible resolutions,
> but the net effect is pretty much the same.  I guess what I'm really
> saying is that limitation is not perceivable to me.
>
> The top output will give you a sampling from all 256 levels at any
> given time.  The bottom output has an adjustable range (either a
> pot or external VC) which in effect allows you to tune the
> bandwidth of these fluctations.  Although I;m not 100% positive,  I
> think it's reacting like a low Q bandpass filter, the peak of which
> is the pointer of the pot. But instead of passing voltage, you're
> passing and attenuating numbers within the range of 256. . Fully
> CCW will attenuate the high numbers and give you emphasis on
> the low numbers with a gradual taper into the mid range.
> Centering the pot will emphasize the center with a graudual
> taper to both the low and high ends, and fully CW will fully
> attenuate the lower scale and give emphasis on the high
> numbers with a gradual taper into the mid.
>
> In any event, the result is very musical.  Atonal, but musical if that
> makes any sense.
>
> One thing to mention is the while this module is set up like and
> behaves much in the manner of the Buchla 266, Dieter's method
> to derive the random internally is not the same as Buchla's
> approach.  Dieter opted for digital noise while Don Buchla used
> a noise-modulated triangle wave as the source, much like Serge
> and Wiard did, but their's use a saw wave.  Because this
> difference (digital noise), I would be interested to hear the 149
> agianst a 266.  I know of a 266 locally and wil be suggesting a
> face off in the newar future and will report back to you all,
> possibly even with audio examples.
>
> In any event - if you're lover of random voltage as I am (my
> system now has six  souces for stepped random)  - buy the 149,
> it's great.
>
> hope this helps,
>
> Peter
>
>