[sdiy] MIDI to CV/Gate APPREGIATOR

[Carsten Tönsmann]

Hi,

in my module the µController computes an 6 bit voltage value from the 
incoming MIDI note sequence. This is converted to the CV analogue voltage by 
a DAC08. This is done for up to 8 channels.

I would realize an appregiator this way:

- Setup a timer interrupt for the note jumps
- Think about a sequence of offsets (octave up or down, stepwise and so on)
- Loop thru your sequence by timer interrupt
- Compute Note values with the offsets
- convert them to analogue CV

This can be done with a monophonic / one channel MIDI2CV/GATE - module.

If you have a polyphonic / multi channel one like my UCVM you can also think 
about switching appregiator sequences depending on the number of keys 
pressed the same time. I have heard some nice appregiator effects on my 
Yamaha CS1 using this effect.

Regards

Carsten
http://www.analog-monster.de


----- Original Message ----- 
From: "Dan Snazelle" <subjectivity at hotmail.com>
To: "Carsten Tönsmann" <carsten at analog-monster.de>; "Robert Lorentz" 
<robert.lorentz at gmail.com>; "SDIY" <synth-diy at dropmix.xs4all.nl>
Sent: Wednesday, August 20, 2008 10:16 AM
Subject: RE: [sdiy] MIDI to CV/Gate APPREGIATOR



id love to know (as stated on the  site) how this could be used for an 
appregiator. a lifelong dream of mine is to have an appregiator module of 
some kind

any ideas on using this microcontroller or any other means to achieve this?

thanks



--------------------------------------------
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(or for techno) http://www.myspace.com/snazelle


> From: carsten at analog-monster.de
> To: robert.lorentz at gmail.com; synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] MIDI to CV/Gate on a microcontroller?
> Date: Wed, 20 Aug 2008 08:47:26 +0200
> CC:
>
> Hi,
>
> I built an 8 voice polyphonic solution with a rather primitve, but working
> MIDI interpretation:
>
> http://www.analog-monster.de/ucvm_en.html
>
> Regards
>
> Carsten
> http://www.analog-monster.de/
>
>
> ----- Original Message -----
> From: "Robert Lorentz"
> To: "SDIY"
> Sent: Wednesday, August 20, 2008 12:04 AM
> Subject: [sdiy] MIDI to CV/Gate on a microcontroller?
>
>
>> I'm looking for compiled or source code (both free to do whatever I
>> want with) to put on any kind of microprocessor (smaller/simpler the
>> better) that can do MIDI note on/off to CV/Gate signals. If it can do
>> 4 note poly then that's (way) better.
>>
>> Can anyone recommend a solution to me? This doesn't need to be
>> nanosecond timing or have a CV up to 0.000001% precision or anything
>> ridiculous like that (I'd just be using CV if it mattered here), just
>> a good lightweight solution up to snuff with say, 1980's commercial
>> gear
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at dropmix.xs4all.nl
>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
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