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Subject: Re: [ModularSynthPanels] Re: Ian Fritz AD/ AR PCBs!

From: "Andrew Listmayer" <andrewlistmayer@...>
Date: 2008-09-12

Thanks both of you, that clears up a lot.

On Thu, Sep 11, 2008 at 1:04 PM, <waveguide@...> wrote:

Andrew,

Not sure how newbie you are so I've explained things you are probably readily be aware of. Discard whatever is common knowledge for where ever you're at and use whatever is left that you find useful. Hopefully not all rubbish here.

Mostly have a look at the [newly posted?] documentation on Scotts AD/AR Bridechamber page to read Ian's text on what really happens but my take on this:

If I read the documentation at face value, the AD/AR portion of the circuit appears to be triggerable only by pulse waveshapes pretty standard for any garden variety envelope generator. Oscillating waveshapes can trigger it when your input is connected to the Monostable portion of the circuit to provide conversion of oscillating input to trigger/gate out. Patch that output to trigger the AD/AR section. Again, I don't believe the envelope section will accept anything but squared up pulses/gates, which is why I'd think Ian provides the Monostable section.

The duration or width of the pulse at the envelope input will determine the resulting shape or countour of the output envelope voltage. Hence the distinction between AD or AR, in its name. A narrow trigger gives a more brief AD response, while a Gate at the input will provoke a more prolonged slope of the AR type of response. Attack should be the status quo in either case.

If your keyboard or sequencer or whatever produces only trigger pulses, it is a momentary event even if on say on a keyboard you hold the key down. You can extend the duration of incoming pulses going through the Monostable but without any articulation that you could if you out using a gate output from your keyboard, i.e. the gate is on for the entire time you hold down the key permitting you to change the duration-shape of the envelope created.

I've always been big on cascaded clustered envelopes from multiple triggers for layering timbres. Having an onboard detector [Monostable] as will permit trigger creation, extraction from oscillating waveshapes , as well as control over output pulse duration has been something I had wanted in one package for a while. I recognized the 556 timer implementation in the circuit and said to myself, "this will save me scads of time trying to hack one of these together", preferring finished pcbs to breadboards or hand etching.

I'll probably not have to use as many adsr's or separate trigger delays for a lot of cases when an ADR will do and carries a the Monstable on board. Goes back to system density.

Hope that helps.



-----Original Message-----
>From: andrewlistmayer <andrewlistmayer@...>
>Sent: Sep 11, 2008 8:34 AM
>To: ModularSynthPanels@yahoogroups.com
>Subject: [ModularSynthPanels] Re: Ian Fritz AD/ AR PCBs!
>
>Thanks for the reply, but I still don' think I'm into the 21st century
>yet. Doesn't the envelope trigger when the input rises over a certain
>threshold, meaning anything can trigger it? If so, why does it matter
>how short or long the trigger is?
>
>
>--- In ModularSynthPanels@yahoogroups.com, Scott Deyo <contact@...> wrote:
>>
>> The monostable can do lots of things.
>> It can make your gate into a trigger, or your trigger into a gate. So,
>> if your sequencer sends out short triggers, you can stretch it into a
>> longer gate for filter sweeps and such on slow sequences, and vice
>> versa if your sequencer sends out gates which are a too long.
>> It can make a short trigger into a long AR, and your long gate into a
>> percussive AD, so you can get a little staccato bow on a violin sound
>> or a tonguing to your clarinet sound, while the gate on the note you're
>> holding down is triggering another AR for your filter frequency.
>> You can plug your trigger into both Mono and G/T inputs to get double
>> triggering.
>> You can use it as a simple pulse delay, cascading into your next EG.
>>
>> If you're an ADSR kind of fella, then stick w/ those. I think a lot of
>> folks leave Sustain at 10, and could use an extra bit of versatility in
>> their 1U EG.
>>
>> Scott Deyo
>> The Bridechamber
>> contact@...
>> http://www.bridechamber.com
>> Jealous Edison Record Kompany
>> http://www.jealousedison.com
>>
>>
>> On Sep 10, 2008, at 11:47 PM, andrewlistmayer wrote:
>>
>> > Can someone enlighten me? What is the point of the pulse delay? I
>> > would rather go for another AR envelope, as you could use that as a
>> > trigger delay for your first envelope or as a regular envelope
>itself,
>> > but I'm a noob so set me straight.
>> >
>> > --- In ModularSynthPanels@yahoogroups.com, waveguide@ wrote:
>> > >
>> > > Scott,
>> > >
>> > > Just read the posted docs for this module. Brilliant. I had been
>> > hoping to come across something like this for a long time. The
>> > multifunction utilitarian pulse delay is a superb bonus. I don't
>> > design circuits but these building blocks are ideal and exactly
>what I
>> > would do if I could.
>> > >
>> > > Consider a bank of 5-6 of these, sequenced.
>> > >
>> > > My thanks to Ian and of course you for picking them up for
>> > distribution here. Looks like things may be resolving themselves
>here.
>> > Hopefully I can follow through on my plan on picking up pairs of all
>> > the Fritz pcbs followed by and parts kits.
>> > >
>> > > P.S
>> > > For the knobs buy I may be able to reach for 200.
>> > >
>> > > Regards
>> > > C.Holsey
>> > >
>> > > -----Original Message-----
>> > > >From: Scott Deyo <contact@>
>> > > >Sent: Aug 15, 2008 12:00 PM
>> > > >To: ModularSynthPanels@yahoogroups.com
>> > > >Subject: [ModularSynthPanels] Ian Fritz AD/ AR PCBs!
>> > > >
>> > > >Just in --
>> > > >Ian Fritz's EG!
>> > > >
>> > > >Controls: Attack, Decay/ Release, Pulse Delay, Pulse Width.
>> > > >Jacks: Trig/Gate Input, AD/AR Output, Pulse Input, Pulse Output.
>> > > >LED.
>> > > >
>> > > >Available on the site, panels being worked on.
>> > > >
>> > > >Cheers,
>> > > >Scott Deyo
>> > > >The Bridechamber
>> > > >contact@
>> > > >http://www.bridechamber.com
>> > > >Jealous Edison Record Kompany
>> > > >http://www.jealousedison.com
>> > > >
>> > >
>> >
>> >
>> >
>>
>
>