WTF Oscillator

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PaulaM
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Post by PaulaM » Tue Sep 11, 2018 5:04 am

Grumble wrote:So... actually this is a generator, not an oscillator :mrgreen:
Not sure I follow. Care to elaborate?
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Grumble
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Post by Grumble » Tue Sep 11, 2018 8:34 am

it’s purely semantics.
An oscillator oscillates what means that there is an amplifier with a gain >1 and a phaseshift of 180’ (could also be in software) and a generator generates its signal, by means of a wavetable.

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Post by PaulaM » Tue Sep 11, 2018 8:55 am

Grumble wrote:it’s purely semantics.
An oscillator oscillates what means that there is an amplifier with a gain >1 and a phaseshift of 180’ (could also be in software) and a generator generates its signal, by means of a wavetable.
So, in your definition a DCO isn't an oscillator as it relies on the CPU to reset the ramp to generate the frequency.

Your definition would also mean that any sawtooth core oscillator would also not be classified as an oscillator as it uses a FET to reset the ramp.

Wikipedia defines an oscillator like this "An electronic oscillator is an electronic circuit that produces a periodic, oscillating electronic signal"

OED defines oscillator as "A device for generating oscillatory electric currents or voltages by non-mechanical means."

so, for me personally either of the OED or Wikipedia version are what I use for oscillator.

You're of course entitled to your own opinion :)

Hope that helps clarify.
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Post by josaka » Tue Sep 11, 2018 9:45 am

PaulaM wrote:
josaka wrote:Quite curious to hear What AM would sound like fed into different CV inputs.. or all at the same time !!
How do you mean AM?

Do you mean a high speed LFO driving the width and/or wave inputs?

Paula
audio rate modulation.. :)

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Post by Grumble » Tue Sep 11, 2018 9:48 am

So, in your definition a DCO isn't an oscillator as it relies on the CPU to reset the ramp to generate the frequency.
Correct.
Wikipedia defines an oscillator like this "An electronic oscillator is an electronic circuit that produces a periodic, oscillating electronic signal"
The keyword is oscillating :mrgreen:

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Post by PaulaM » Tue Sep 11, 2018 9:55 am

Grumble wrote:
So, in your definition a DCO isn't an oscillator as it relies on the CPU to reset the ramp to generate the frequency.
Correct.
and the sawtooth core too, interesting.
Grumble wrote:
Wikipedia defines an oscillator like this "An electronic oscillator is an electronic circuit that produces a periodic, oscillating electronic signal"
The keyword is oscillating :mrgreen:
Agreed, but note; it does not describe an oscillator as you do.

:)
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Post by PaulaM » Tue Sep 11, 2018 9:55 am

josaka wrote: audio rate modulation.. :)
It gets quite knarly, I'll try and do some recordings in the next few days.

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Post by josaka » Tue Sep 11, 2018 10:13 am

PaulaM wrote:
josaka wrote: audio rate modulation.. :)
It gets quite knarly, I'll try and do some recordings in the next few days.

Paula
:tu:

and its not already ..? :)

also.. will you have 'stock' ready to buy off the shelf as it were ..? or is it strictly a build to order thing?

..stick it up on Modular Grid ! :) fantasy is half this gig. :tu:

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Post by cornutt » Tue Sep 11, 2018 1:54 pm

Well, it's a very fine point, but an EE would separate oscillators into "resonant" and "relaxation" types. A resonant oscillator amplifies the natural resonance of an LC circuit, or a crystal, or something else that resonates naturally. Everything else, including sawtooth-core VCOs, triangle-core VCOs, and DCOs, is a relaxation oscillator.
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Post by daveholiday » Tue Sep 11, 2018 6:30 pm

Awww for fucks sake.....


Oscillator.... Generator.... it's digital folks, AND... I think it sounds damn good!!

So set the semantics aside and just think of it as another waveform source.

I have no EE type knowledge that would allow me to even get into debates like these so please don't come after me!! But the main thing that appeals to me about this module, is that it provides a newbie like myself a clear, easy to understand way to create complex evolving waveforms. I did have slight reservations about digital artifacts rearing their ugly head, but in my demo this thing sounded smooth as silk!

Don't get me wrong I love analog gear, but I also see the future of hybrid technology. I am so ready to drive this module with digitally generated LFOs (PRO 2) run through my lovely C101 mk2 filter....or fuck so shit up running through the dual wasp or Polyvoks (fun vcf)!!

I highly recommend playing with one...even a eurorack version!!

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Post by Grumble » Wed Sep 12, 2018 1:14 am

FUN is the keyword :hihi:

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Post by daveholiday » Wed Sep 12, 2018 6:10 am

I also love the waveform display! I use a VST plugin in Cubase with my modular just to "see" what it sounds like! So this is a nice visual cue as to what is going on. I bet it would make some nice eye candy with audio rate modulation!

Grumble, HOLY SHIT! just watched your videos...very nice work! I have always wondered if the arduino platform would get used more in DIY synths.

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Post by PaulaM » Mon Sep 17, 2018 4:21 pm

josaka wrote:
PaulaM wrote:
josaka wrote: audio rate modulation.. :)
It gets quite knarly, I'll try and do some recordings in the next few days.
:tu:

and its not already ..? :)
A different kind of Gnarly, see below ;)
josaka wrote:also.. will you have 'stock' ready to buy off the shelf as it were ..? or is it strictly a build to order thing?
it'll be available to order from end of October


Hope the video below answers your questions
https://youtu.be/L2vqCuxief4
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PaulaM
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Post by PaulaM » Mon Sep 17, 2018 4:22 pm

daveholiday wrote:I also love the waveform display! I use a VST plugin in Cubase with my modular just to "see" what it sounds like! So this is a nice visual cue as to what is going on. I bet it would make some nice eye candy with audio rate modulation!

Grumble, HOLY SHIT! just watched your videos...very nice work! I have always wondered if the arduino platform would get used more in DIY synths.
Thank you for your kind words, though it's not an Arduino :)

Paula
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Post by Grumble » Mon Sep 17, 2018 4:32 pm

Thank you for your kind words, though it's not an Arduino smile
the arduino part was directed @ me :hihi:
Thanks daveholiday :mrgreen:

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Post by PaulaM » Tue Sep 18, 2018 2:10 am

Ahh, my bad :)
Nice sounding synths Grumble.
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Post by Grumble » Tue Sep 18, 2018 2:17 am

NP and Thank you!

JohnLRice

Post by JohnLRice » Tue Sep 18, 2018 2:18 am

Sounds tasty! :tu:
PaulaM wrote:Hope the video below answers your questions
[video][/video]

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Grumble
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Post by Grumble » Tue Sep 18, 2018 2:26 am

it does! Do you care to explain how morphing from one signal into the other works?
(no problem getting technical :hyper: )

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Post by Dr Gris » Tue Sep 18, 2018 12:05 pm

Don't know how this differs sound wise from a morphing wavetable oscillator but it sure sounds cool!!!
A future must buy!

//M

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Post by josaka » Tue Sep 18, 2018 4:11 pm

Cheers Paula! sounds very nice.. I will be getting one as soon as funds allow.. :)

[video][/video]

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Post by PaulaM » Tue Sep 18, 2018 4:14 pm

Grumble wrote:it does! Do you care to explain how morphing from one signal into the other works?
(no problem getting technical :hyper: )
There's a series of videos on the kickstarter page and the you tube channel.
Essentially you can open a "window" and insert a portion of a second wave into the first, this video explains it quite well - https://youtu.be/vOhqTYfrli0?t=54s
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Post by PaulaM » Tue Sep 18, 2018 4:16 pm

Dr Gris wrote:Don't know how this differs sound wise from a morphing wavetable oscillator but it sure sounds cool!!!
A future must buy!

//M
Well, it's quite a bit different, see the previous message with an explanation, but also here's a video with the front and rear waveforms morphing and the window morphing.. you can't do this with a regular mophing wavetable :)


https://youtu.be/AKDnfZXonRw?t=1m12s
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Post by Grumble » Tue Sep 18, 2018 4:23 pm

Thanks, I will check out your kickstarter page :tu:

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Post by daveholiday » Tue Sep 18, 2018 8:17 pm

WELL THANK YOU PAULA......damn it....*sigh*

One would do, but now I am thinking about the possibilities of having 2. Thanks to you, I am rebuilding my case to accommodate more modules. I really am looking forward to the release.

This does bring a thought to my head.....WTF LFO with BPM sync to note structure? I love a "true" clocked digital LFO...might be worth looking into....

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