FM Modulation FX?

[CinningBao]

For me, well I've always known that running a time-domain object faster results in higher pitch (from mucking around with records and tapes in my younger years) and then when I discovered chorus effects I just wondered "what happens if we make that modulating source massive".. made some nasty-ass modulated delay line things, then realised time-domain pitch shifting is done with short windows, with a small delay (to give the buffer time to fill up so it can be played a little faster than it was recorded) and lots of these short pitch-up 'grains' cross-faded to sound seamless, but that isn't always achieved. (I would point to some terrible pitch-shifters.. but you've probably come across some yourself)

So one day it occurred to me that I could modulate a delay line with a more complex signal (like a real-time input) and adjust it in such a way that the audio signal appears like an LFO to the delay line, not that any of these components have any awareness of what is before or after them; they just want numbers in the right range. And that's FM with a delay line!

Just keeping the numbers in the positive range, and multiplying accordingly is all this is really.

thanks! very clear and with some info that will give some directions to experiment, andcto discover....

Happy to inspire!
The best way to explore this stuff is by experimenting, so have fun rolling your own!

[gentleclockdivider]

why FM by delay, is a question, of course.. some info about this will help discover more possibilties.

i know that you can use delays for all kind of stuff, not that straight forward, but FM i didn't think of.

Why not ?
A delay line is a buffer , data and thus audio is stored in that buffer .
The delay time points to a location in that buffer at that exact point , and plays it back.
So when you modulate the play head you're actually modulating -scanning through that buffer , can go from subtly chorus effects to pitch shifting , fast audio rate sources yield FM like results
Here's a verry simple example ,
It's zebra with a sine osc on the left , and a sine osc on the right channel one octave above , both going into reaktor .
Right channel is modulating the delay line time , left channel is going delay line input , result fm like square wave .
https://app.box.com/s/1m47a4bndo6oascrng1kikw5gdla0qyu

[WasteLand]

why FM by delay, is a question, of course.. some info about this will help discover more possibilties.

i know that you can use delays for all kind of stuff, not that straight forward, but FM i didn't think of.

Why not ?
A delay line is a buffer , data and thus audio is stored in that buffer .
The delay time points to a location in that buffer at that exact point , and plays it back.
So when you modulate the play head you're actually modulating -scanning through that buffer , can go from subtly chorus effects to pitch shifting , fast audio rate sources yield FM like results
Here's a verry simple example ,
It's zebra with a sine osc on the left , and a sine osc on the right channel one octave above , both going into reaktor .
Right channel is modulating the delay line time , left channel is going delay line input , result fm like square wave .
https://app.box.com/s/1m47a4bndo6oascrng1kikw5gdla0qyu

also thanks! indeed, a buffer. grains........ well not, but still..

this is a thread a like, a deeper insigth in synthesis ....

[Tj Shredder]

If you modulate with a saw, you get granular pitch shifting, just without the envelopes (windows).The modulating frequency is very prominent there of course, but its basically half way granular…

[gondii]

I think Phase Mutant does this:
https://www.bleass.com/phasemutant/

Currently 50% off.

[fairlyclose]

I think Phase Mutant does this:
https://www.bleass.com/phasemutant/

Currently 50% off.

but doesnt allow two samples to modulate each other - looks good for the current price tho

[WasteLand]

If you modulate with a saw, you get granular pitch shifting, just without the envelopes (windows).The modulating frequency is very prominent there of course, but its basically half way granular…

that i get! great tip, for further explorations.

i had a discussion how close it was to a granular.... that lead to more insights...

[Tj Shredder]

To get it smoother, you need to have two delay lines with 180 degrees phase offset and amplitude modulate with a (-cosine + 1)… (as a starter…; - )

[jalex]

I wonder if anyone else is interested in this plugin? FM modulator effect with side-chain connection(win/osx/lin)
https://github.com/ryukau/VSTPlugins/di ... nt-5230466
it would be great if you took the time to leave feedback

Have a fun

[aMUSEd]

Can’t you do this with the FM modules in Zebrify? (and don't the sideband modules also do some sort of FM or phase modulation?)

[kidslow]

I wonder if anyone else is interested in this plugin? FM modulator effect with side-chain connection(win/osx/lin)
https://github.com/ryukau/VSTPlugins/di ... nt-5230466
it would be great if you took the time to leave feedback

Have a fun

Not specifically interested in this plugin, but good to mention this way off the beaten path developer with a wide variety of obscure effects and instruments. Here's a complete list.
https://ryukau.github.io/VSTPlugins/

[ultimatesynth]

If you've got Plogue bidule I can send you a patch which does exactly this; frequency modulate one audio signal against the other.

I have Plogue Bidule. Could I please get This Patch from you which FM’s one Audio Signal against another?

[neverbefore]

Imaginando FRMS can be a 4 operator FM where an operator can be a sample, an oscillator or live input ie as fx. It does not get a lot of love on KVR but is quite easy to use with a well designed interface

https://www.imaginando.pt/products/frms ... -tutorials

I was thinking of selling my copy coz I am trying to get rid of half what I own, but at the moment I have decided to keep it and get rid of other things first

[ultimatesynth]

Imaginando FRMS can be a 4 operator FM where an operator can be a sample, an oscillator or live input. It does not get a lot of love on KVR but is quite easy to use with a well designed interface

https://www.imaginando.pt/products/frms ... -tutorials

I was thinking of selling my copy coz I am trying to get rid of half what I own, but at the moment I have decided to keep it and get rid of other things first

I appreciate the quick reply, but I wasn’t looking to spend the amount that the desktop versions of this program cost for this functionality. I do see the Rent-to-Own Option though as a possibility. Still, I already bought Plogue Bidule which is why I was asking if I could still get the patch from Cinningbao.

Do you know if the iOS / iPadOS version of Imaginando FRMS has that Same Functionality of being able to FM one live input against another live input?

[neverbefore]

Imaginando FRMS can be a 4 operator FM where an operator can be a sample, an oscillator or live input. It does not get a lot of love on KVR but is quite easy to use with a well designed interface

https://www.imaginando.pt/products/frms ... -tutorials

I was thinking of selling my copy coz I am trying to get rid of half what I own, but at the moment I have decided to keep it and get rid of other things first

I appreciate the quick reply, but I wasn’t looking to spend the amount that the desktop versions of this program cost for this functionality. I do see the Rent-to-Own Option though as a possibility. Still, I already bought Plogue Bidule which is why I was asking if I could still get the patch from Cinningbao.

Do you know if the iOS / iPadOS version of Imaginando FRMS has that Same Functionality of being able to FM one live input against another live input?

Bidule is definitely on my list of possible purchases and probably a better buy anyway. No idea on the ipad version, you'd have to contact them

I think I made a mistake - live input is not able to be FM'd - rechecking at the moment