Hertz Oscillator

Where is an oscillator (sine) for Reaktor where instead of a pitch input it has a frequency input so that if the connected knob value is 440 the oscillator will output 440 Hz?

 

if you set the pitch to -300 you can use the FM sine oscillator this way.

 

Thanks. Is there a way to get a FM sound going with a couple hertz driven oscillators? I thought this would work as pictured but it doesn't at all.

 

Here is a simple one which i am using in modular x.


ciao herw

 

this is a new question - please open a new thread

 

the FM is not going to work unless the F value is large enough. changing the F by a value of 1 is not going to have an audible difference i don't think.

also with your setup whenever the modulating OSC is negative, the carrier is trying to play at a negative frequency, which probably doesn't work too well.

i'm in the middle of cloning ableton's operator but the tone is off.

 

Just a simple little job, eh!

 

it's surprisingly easy to work on actually, because the INIT patch in operator is literally just a sine tone. from there you can twist knobs and see what they do. i have a working clone of the envelope though, which i will admit took over a day of work on it's own :/

as far as i can tell the tone problem i'm having is that the oscillators in r5 are bandwidth limited so i'm losing the aliasing which may be adding the nice 'buzz' that operator has that my ensemble is missing. when i turn down the tone knob in operator it sounds just like my ensemble, when i turn it up, it adds in all the harsh goodness which i can't emulate :/

sorry for the threadjack!

 

if this is the case, you could do no worse than go with some naive digital osc implementations, hehe.
for example, this fantastic ensemble (which sounds completely fabulous despite the naive approach) also aliases like crazy and, while the structure is slightly spaghetti like, it's actually pretty easy to modify, once you clear it up a bit. the oscillators section should be extractable, I think. even though the oscillator section is almost all there is. oh right, the link: http://co.native-instruments.com/index.php?id=userlibrary&type=0&ulbr=1&plview=detail&patchid=8598

 

Neither of those are the case. I made the values for both F knobs 0-1000 and tried twisting the knobs all around and nothing interesting or FM-like happened.

 

that's a *little* closer to what i want, well i only checked the sine one and it seems to have a little more grit, but still need some more...
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hi ben, unless you've changed the wiring from your first diagram, you certainly are setting the carrier to have a neg freq whenever the mod is negative.

 

None of the knobs are ever set to negative values. I'm pretty confused here now. If my patch is wrong could you show me a better way?

 

look at it this way.
let's say the amplitude of each osc in your diagram is set to one. so the modulator sine is going from -1 to 1. everytime it drops below zero, the output gets multiplied by the FM amount (yielding a negative product) the F input to the carrier signal receives a negative value. added to the pitch which also has a frequency value of 0, you end up with a negative frequency. i'm not even sure what reaktor does in this case.

instead i suggest you hook the pitch input of the carrier signal to a midi input.

i should add that i'm making my first serious attempt at FM right now with the operator clone (from live 7, not all this new fangled stuff they got going on). so i'm not exactly an expert.

 

I am hoping to get a pure frequency based FM with no midi involved, like one test tone oscillator modulating another one. Is this really not possible? *cue twilight zone music*

 

what values are you using for your knobs?
i just rigged this up for the first time and it sounds pretty FM-y to me.

 

The modulator knob can be set to anything between 0 and 1000 and whenever I turn up the mult knob the only thing that happens is the volume gets quieter. The only result I can get out of this patch is a plain sine wave.

Now I'm really feeling twilight zoney.

 

heh, maybe my ears deceive me, they're pretty bad! the freq should be changing tho

 

Reaktor Sin FM will respond to negative frequencies - use a knob and try it - it is symmetrical.

This function is sin( a sin(x)) which looks like this for a = 6 and 20.
Increasing 'a' make the frequency higher (?) linearly.

It seams there are about 'a' cycles for every 360 degrees but it is bumpy, not sinusoidal.

My post here shows what I get:

http://www.native-instruments.com/forum/showpost.php?p=987496&postcount=2

 

Here is an example of the kind of sound I expect to get from this type of synthesis http://soundcloud.com/remote-manipulator-system/car-135hz-mod-369hz-mod-index Carrier 135hz Modulator 369hz Modulator Index envelope climbs from 0-24 (not sure how those 0-24 values translate into Reaktor from maxmsp)
An ultra simple straight forward frequency based FM signal chain with extremely pleasing results.

And the picture of the patch:

Why is this kind of FM vibe so elusive in Reaktor?

 

What'e more elusive for me is to hear Soundcloud play anything. It is always quiet on my computer. Probably something to do with it's audio player scripting.