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Re: [motm] possible micro module?

Re: [motm] possible micro module?

2002-01-31 by jhaible@debitel.net

If you have several S&H's in one module it would only be consequent to
chain them like the Serge Analog Shift Register. (I have a circuit for something
like that.) Individual Signal inputs and clock inputs for each stage (to use
them as separate S&H's), but normalized to a Analogue-Shift-Register chain.

JH.



jwbarlow@... schrieb:
Show quoted textHide quoted text
> Sorry to interrupt the current discussion of the pros and cons of schematics.
> 
> I was thinking today how nice it would be to have several more sample and 
> hold modules in any given system (I think it's an under appreciated and under 
> utilized module). Though the 101s aren't expensive at all, they only supply 
> one S/H per module and some elaborate random/noise functions, of which one 
> probably wouldn't need more than a few in any system.
> 
> What I was thinking was a 1U module with six jacks (S/H in, S/H out, external 
> pulse in) and 3 knobs (2 S/H attenuators, and internal clock rate) -- two 
> independent basic S/H units sharing a common clock which would be defeated by 
> inserting a jack into the external pulse input of each S/H. 
> 
> With this module and an 820 one could get the VC sample and hold that I had 
> proposed a long time ago.
> 
> JB

RE: [motm] possible micro module?

2002-02-01 by John Loffink

Yes, I'd like one of these too, but with better droop characteristics on
the S&H and non-attenuated inputs for precision capture of VCO control
voltages.
John Loffink
jloffink@...
Show quoted textHide quoted text
-----Original Message-----
From: jhaible@... [mailto:jhaible@...] 
Sent: Thursday, January 31, 2002 6:40 AM
To: jwbarlow@...; motm@yahoogroups.com
Subject: Re: [motm] possible micro module?
 
If you have several S&H's in one module it would only be consequent to
chain them like the Serge Analog Shift Register. (I have a circuit for
something
like that.) Individual Signal inputs and clock inputs for each stage (to
use
them as separate S&H's), but normalized to a Analogue-Shift-Register
chain.

JH.



jwbarlow@... schrieb: 
> Sorry to interrupt the current discussion of the pros and cons of
schematics.
> 
> I was thinking today how nice it would be to have several more sample
and 
> hold modules in any given system (I think it's an under appreciated
and under 
> utilized module). Though the 101s aren't expensive at all, they only
supply 
> one S/H per module and some elaborate random/noise functions, of which
one 
> probably wouldn't need more than a few in any system.
> 
> What I was thinking was a 1U module with six jacks (S/H in, S/H out,
external 
> pulse in) and 3 knobs (2 S/H attenuators, and internal clock rate) --
two 
> independent basic S/H units sharing a common clock which would be
defeated by 
> inserting a jack into the external pulse input of each S/H. 
> 
> With this module and an 820 one could get the VC sample and hold that
I had 
> proposed a long time ago.
> 
> JB




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Re: [motm] possible micro module?

2002-02-01 by jwbarlow@aol.com

In a message dated 1/31/02 10:16:23 PM Pacific Standard Time, 
jlarryh@... writes:


> I am still a modular use idiot.  Someone explain to me how you would use 
> something like this.  The term analog shift register is not even in my 
> 

It's like a digital delay, but it's analog <g>!

But seriously... the most common example is that you can use it to produce a 
(or several) delayed CV for melody lines (voices) that exactly follow the 
input -- for cannonic like stuff. 

Used like this, you quickly need a whole bunch of more VCOs and the rest.

I'm sure there would be several other great uses for an ASR, but I've never 
had one so I can't say. I do like the idea of being able to whip one up out 
of a bunch of S/Hs -- but given a choice between having an ASR or three S/Hs, 
I'd take the S/Hs.

Juergen's idea of having a module with several S/Hs that are normalized as an 
ASR would be an excellent way to deal with both modules.

JB

Re: [motm] possible micro module?

2002-02-01 by J. Larry Hendry

I am still a modular use idiot. Someone explain to me how you would use something like this. The term analog shift register is not even in my pea-brained modular vocabulary.
Thanks,
Larry (who spends too much time working on stuff instead of playing with it)
Show quoted textHide quoted text
----- Original Message -----
Sent: Thursday, January 31, 2002 10:17 PM
Subject: RE: [motm] possible micro module?

Yes, I\u2019d like one of these too, but with better droop characteristics on the S&H and non-attenuated inputs for precision capture of VCO control voltages.

John Loffink
jloffink@...

-----Original Message-----
From: jhaible@... [mailto:jhaible@...]
Sent: Thursday, January 31, 2002 6:40 AM
To: jwbarlow@...; motm@yahoogroups.com
Subject: Re: [motm] possible micro module?

If you have several S&H's in one module it would only be consequent to
chain them like the Serge Analog Shift Register. (I have a circuit for something
like that.) Individual Signal inputs and clock inputs for each stage (to use
them as separate S&H's), but normalized to a Analogue-Shift-Register chain.

JH.



jwbarlow@... schrieb:
> Sorry to interrupt the current discussion of the pros and cons of schematics.
>
> I was thinking today how nice it would be to have several more sample and
> hold modules in any given system (I think it's an under appreciated and under
> utilized module). Though the 101s aren't expensive at all, they only supply
> one S/H per module and some elaborate random/noise functions, of which one
> probably wouldn't need more than a few in any system.
>
> What I was thinking was a 1U module with six jacks (S/H in, S/H out, external
> pulse in) and 3 knobs (2 S/H attenuators, and internal clock rate) -- two
> independent basic S/H units sharing a common clock which would be defeated by
> inserting a jack into the external pulse input of each S/H.
>
> With this module and an 820 one could get the VC sample and hold that I had
> proposed a long time ago.
>
> JB


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ASR (was: possible micro module?)

2002-02-01 by mark@indole.net

At 1:09 AM -0600 02/01/02, J. Larry Hendry wrote:
>
>   I am still a modular use idiot.   Someone explain to me how you
>would use something like this.  The term  analog shift register is
>not even in my pea-brained modular  vocabulary.   Thanks, Larry (who
>spends >too much time working on stuff  instead of playing with it)  

Then you'll be able to excuse my half-assed description :)

You know how a BBD delays audio by passing along a sampled voltage with
each pulse of clock??  Well, afaik, an analogue shift register is like a
BBD but with a separate output for each bucket.

For example, let's say there is an ASR with three stages, three outputs, a
clock input, and a changing voltage at the voltage input (let's say an LFO
run through a quantizer).

CLOCK IN
CV IN
CV A OUT
CV B OUT
CV C OUT

When the clock pulses, the input voltage is sampled and held at output A,
the voltage previously held at output A is handed over to output B, the
voltage previously held at output B is handed over to output C, and the
voltage previously held at output C is lost as it's replaced by B.  So if
you have each output (A, B, and C) controlling three VCO's in a row, each
plays the note played by the previous VCO.

If you want to go for Baroque, you can play a melody on a monophonic
keyboard or single-channel sequencer, with the voltage going the ASR's CV
input and the trigger/gate going into the clock input.  With each VCO tuned
to a different interval (perhaps with a JH-822 :) it will play the
transposed melody one note later.  Notice that you can modulate the key of
each voice by changing the offset voltage.  Also, if the input to the ASR
is noise, the random sequence will repeat while maintaining the musical
relationship between the VCO's, or could be repeated by a different patch.
You can also ignore one of the outputs so it plays the VCO two notes later,
use it as a delayed sample and hold, or use it to control the input to
three LFO's clocking three sequencers, etc.

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