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Silent way calibration with modular oscillator issue
Posted: Tue Nov 15, 2016 10:50 am
by JoPo
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 (2.58 KiB) Viewed 9257 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 !
) :
- ES ok.jpg (2.96 KiB) Viewed 9257 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 !
Re: Silent way calibration with modular oscillator issue
Posted: Tue Nov 15, 2016 12:09 pm
by jksuperstar
V/Oct or Hz/V?
Try attenuating the oscillator output to avoid any overdriving of the calibration routine.
Re: Silent way calibration with modular oscillator issue
Posted: Tue Nov 15, 2016 1:10 pm
by JoPo
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...
Re: Silent way calibration with modular oscillator issue
Posted: Tue Nov 15, 2016 11:06 pm
by ShogunSpy
Re: Silent way calibration with modular oscillator issue
Posted: Wed Nov 16, 2016 2:19 am
by DragonSF
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).
Re: Silent way calibration with modular oscillator issue
Posted: Wed Nov 16, 2016 6:11 am
by JoPo
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 !
I'm wondering if I'm not completly idiot...
Re: Silent way calibration with modular oscillator issue
Posted: Wed Nov 16, 2016 6:25 am
by JoPo
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 !
Re: Silent way calibration with modular oscillator issue
Posted: Wed Nov 16, 2016 2:01 pm
by ShogunSpy
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 !
Re: Silent way calibration with modular oscillator issue
Posted: Wed Nov 16, 2016 3:14 pm
by JoPo
Yahoo !! Thanks a lot !!
How did you register at muffwiggler ?? I tried 10 times --> nada !
Re: Silent way calibration with modular oscillator issue
Posted: Wed Nov 16, 2016 4:13 pm
by DragonSF
JoPo wrote: 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 !
I'm wondering if I'm not completly idiot...
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.
Re: Silent way calibration with modular oscillator issue
Posted: Thu Nov 17, 2016 9:13 am
by JoPo
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 !
Anyway... ShogunSpy gave me the calibration file which works perfectly for all midi octave ! Very useful !
Re: Silent way calibration with modular oscillator issue
Posted: Fri Nov 18, 2016 1:02 am
by Liquid EDGE
Re: Silent way calibration with modular oscillator issue
Posted: Fri Nov 18, 2016 8:24 pm
by DragonSF
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 !
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)
- snth.JPG (287.74 KiB) Viewed 9108 times
Re: Silent way calibration with modular oscillator issue
Posted: Sun Nov 20, 2016 5:19 am
by JoPo
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 !
Re: Silent way calibration with modular oscillator issue
Posted: Sun Nov 20, 2016 2:41 pm
by dawman
Bet that synth is a FAT Basrard.
Re: Silent way calibration with modular oscillator issue
Posted: Sun Nov 20, 2016 3:29 pm
by DragonSF
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).
Re: Silent way calibration with modular oscillator issue
Posted: Mon Nov 21, 2016 9:03 pm
by ShogunSpy
looks like the granddad of fat Bastards!!
..nice rig DragonSF
Re: Silent way calibration with modular oscillator issue
Posted: Mon Nov 21, 2016 11:32 pm
by DragonSF
ShogunSpy wrote:looks like the granddad of fat Bastards!!
..nice rig DragonSF
Thanks. You should see my guitar rig!
Re: Silent way calibration with modular oscillator issue
Posted: Tue Nov 22, 2016 8:55 am
by faxinadu
wow man nice rack!!!!
