Silent way calibration with modular oscillator issue

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JoPo
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Silent way calibration with modular oscillator issue

Post by JoPo » Tue Nov 15, 2016 10:50 am

I'm trying to calibrate as best as possible the 'Voice Controller' module from Expert Sleepers with a simple sine wave modular oscillator and I get a usable pitch signal only on 2.5 octaves. I'd like to have 4 or 5 octaves !

It's a bit special and people who don't have Silent way won't be able to understand what I try to achieve. But maybe some people here is using the 'Voice Controller' module and have better result... Have a look to the curve I obtain :
ES curv.jpg
ES curv.jpg (2.58 KiB) Viewed 2029 times
As you see, the longer part is not very long and it's not straight, which means the pitch is far from be perfect even on those poor 2.5 octaves ! A good curve should looks like this (but that's not mine ! :D ) :
ES ok.jpg
ES ok.jpg (2.96 KiB) Viewed 2029 times
I already tried to low Voice Controller input & output for calibration --> no luck. I really don't know what to try to improve it.

Silent way works perfectly thru asio in Scope, so there is no reason that only pitch CV signal would not work as well via asio into Scope, no ?

Does someone could give me some advice about this specific question, around here ? Thanks !
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jksuperstar
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Re: Silent way calibration with modular oscillator issue

Post by jksuperstar » Tue Nov 15, 2016 12:09 pm

V/Oct or Hz/V?

Try attenuating the oscillator output to avoid any overdriving of the calibration routine.

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Re: Silent way calibration with modular oscillator issue

Post by JoPo » Tue Nov 15, 2016 1:10 pm

Thanks for the advice ! .... But I already tried that. It just shiffted a bit the curve but with the same pitch range : around 2.5 octaves on the biggest curve part...
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DragonSF
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Re: Silent way calibration with modular oscillator issue

Post by DragonSF » Wed Nov 16, 2016 2:19 am

FYI: the frequency value is internally calculated with this formula:pad value=f*2^31/SR. ( So 440Hz will have the pad value of 21426140).
Last edited by DragonSF on Wed Nov 16, 2016 4:01 pm, edited 1 time in total.

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Re: Silent way calibration with modular oscillator issue

Post by JoPo » Wed Nov 16, 2016 6:11 am

:D I'm a little bit confused...
The muffwiggler links is interesting but I'm not able to register to this forum, I give always bad answer to the robot check question about an animal or about a synth ! Now, it refuses to let me try again !
And the text files they are talking about on the topic are not available for non registered people.

:-? DragonSF : I don't understand nothing of what you're saying ! :o I'm wondering if I'm not completly idiot... :roll:
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Re: Silent way calibration with modular oscillator issue

Post by JoPo » Wed Nov 16, 2016 6:25 am

If someone has the privilege to be registered on muffwiggler, please, follow the link and check if the text files from tomylee are still available ! Thanks ! I'm impatient to see how a good calibration file for Modular looks like !
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Re: Silent way calibration with modular oscillator issue

Post by ShogunSpy » Wed Nov 16, 2016 2:01 pm

JoPo wrote:If someone has the privilege to be registered on muffwiggler, please, follow the link and check if the text files from tomylee are still available ! Thanks ! I'm impatient to see how a good calibration file for Modular looks like !
Attachments
Silent Way Voicecontroller Modular III MVC Oscillator FREQ Calibration DATA.txt
(1.86 KiB) Downloaded 62 times

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JoPo
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Re: Silent way calibration with modular oscillator issue

Post by JoPo » Wed Nov 16, 2016 3:14 pm

Yahoo !! Thanks a lot !! :)

How did you register at muffwiggler ?? I tried 10 times --> nada !
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Re: Silent way calibration with modular oscillator issue

Post by DragonSF » Wed Nov 16, 2016 4:13 pm

JoPo wrote::D I'm a little bit confused...
The muffwiggler links is interesting but I'm not able to register to this forum, I give always bad answer to the robot check question about an animal or about a synth ! Now, it refuses to let me try again !
And the text files they are talking about on the topic are not available for non registered people.

:-? DragonSF : I don't understand nothing of what you're saying ! :o I'm wondering if I'm not completly idiot... :roll:
You couldn't understand what I'm saying, because what I wrote was wrong. I corrected that. What I tried to explain was, that you have to keep in mind when you convert a signal from the outside to a module directly (i.e. not using MIDI). So if you get for ex. V/Hz as CV from the outside, you have to convert this voltage (as number) by multiplying this value with the conversion factor). Lets say: 2.2 V represents 440Hz and the S/R is 48000, you need to multiply 2.2 with 8947848 to get the correct pad value. If you have Oct/V, it's a little bit more complicated, but also straight forward.

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Re: Silent way calibration with modular oscillator issue

Post by JoPo » Thu Nov 17, 2016 9:13 am

Thanks, Dragon, to take time to explain. As I don't have any hardware modular, I don't know the voltage value. But now, I get what you're meaning. The relation is linear...
I'd like to know the max voltage value on a modular system... Is it 10v ? So the normalised signal would be 0v --> 10v ? Right ?
... After checking in wikipedia, I can see that there are 3 normalised voltages : +/- 15V ; +/- 12V or +/-18V ! One has to take care to not feed a 12v max module with 18v ! Converters are needed to use several voltages ??
Software are less risky ! And I don't have enough space & money, anyway ! :D

Anyway... ShogunSpy gave me the calibration file which works perfectly for all midi octave ! Very useful !
> > > > > > > > > > > > --- Musica --> here ! ---< < < < < < < < < < < <

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Re: Silent way calibration with modular oscillator issue

Post by Liquid EDGE » Fri Nov 18, 2016 1:02 am

JoPo wrote: :-? DragonSF : I don't understand nothing of what you're saying ! :o I'm wondering if I'm not completly idiot... :roll:
Sorry, I love the way you worded this. Made me laugh a lot. Your a witty guy! :lol: :)

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Re: Silent way calibration with modular oscillator issue

Post by DragonSF » Fri Nov 18, 2016 8:24 pm

JoPo wrote:Thanks, Dragon, to take time to explain. As I don't have any hardware modular, I don't know the voltage value. But now, I get what you're meaning. The relation is linear...
I'd like to know the max voltage value on a modular system... Is it 10v ? So the normalised signal would be 0v --> 10v ? Right ?
... After checking in wikipedia, I can see that there are 3 normalised voltages : +/- 15V ; +/- 12V or +/-18V ! One has to take care to not feed a 12v max module with 18v ! Converters are needed to use several voltages ??
Software are less risky ! And I don't have enough space & money, anyway ! :D

Anyway... ShogunSpy gave me the calibration file which works perfectly for all midi octave ! Very useful !
My modular synth has switchable ranges from -5 to +5V or 0 to 10V. The other ranges are the supply voltages, which are normally not used directly as CV.
It is guaranteed in my system, that no voltage exceeds these limits. SO you can mix audio and control signals without fear off overloading.
You have a choice of input-type (linear or exponential) for most of the modules (VCO,VCF or VCA). Also EG exist, which accept CV as inputs (i.e. definition of A,D, S or R).
With modular synths, yes, space is an issue, but actually no risk.
WOK (wall of knobs): (all cases were designed and built by me)
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Re: Silent way calibration with modular oscillator issue

Post by JoPo » Sun Nov 20, 2016 5:19 am

:) Excellent ! And with some Scope analog I/O and Silent Way, you can make your hardware modular synth play with Scope and vst's ! That must be terrific !
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Re: Silent way calibration with modular oscillator issue

Post by dawman » Sun Nov 20, 2016 2:41 pm

Bet that synth is a FAT Basrard.

DragonSF
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Re: Silent way calibration with modular oscillator issue

Post by DragonSF » Sun Nov 20, 2016 3:29 pm

JoPo wrote::) Excellent ! And with some Scope analog I/O and Silent Way, you can make your hardware modular synth play with Scope and vst's ! That must be terrific !
Even better: imagine an OSC Client (Bela IO) sitting on top of the Synth having 8 analog outs for CV. That's one of my next projects.
And yes, it's FAT. I even haven't tried with my KPA stack (Kemper KPA+Yamaha 1300W monitor).

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Re: Silent way calibration with modular oscillator issue

Post by ShogunSpy » Mon Nov 21, 2016 9:03 pm

looks like the granddad of fat Bastards!! :D ..nice rig DragonSF

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Re: Silent way calibration with modular oscillator issue

Post by DragonSF » Mon Nov 21, 2016 11:32 pm

ShogunSpy wrote:looks like the granddad of fat Bastards!! :D ..nice rig DragonSF
Thanks. You should see my guitar rig!

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Re: Silent way calibration with modular oscillator issue

Post by faxinadu » Tue Nov 22, 2016 8:55 am

wow man nice rack!!!!

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