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  #16  
Old 02-04-2012, 21:07
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Join Date: Jul 2005
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gentleclockdivider wrote:
...I can't replicate the sound on a fm capable synth , u-he bazille also does verry high pitch modulation and there the sound can be replicated , but not when using fm synthesis ..
This is probably due to some implementation difference - maybe the fact that utonic uses oversampled oscillators allows it to handle higher frequencies better ?

Anyhow, as Salamanderanagram has shown - you are incorrect in your assertions.

Another simple test is to modify the structure in the image you posted as follows:
Remove the A to E perm, and connect the switch output directly to the + module.
Attach the output of the add to an Expon(F), then connect that to the F input of the sine osc. Remove all connections to the P input.
Notice that the sound is identical, but you have a cleaner structure - no more daft audio rate event stream.
Now, to avoid serious injury, use a spork for the decapitation.
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  #17  
Old 02-04-2012, 22:22
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FM synths vary in implementation.
operator doesn't work like this, for example. i'm not sure what the 'standard' is, if there is one.
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  #18  
Old 03-04-2012, 06:53
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gentleclockdivider wrote:
Herw ..the manual of microtinc says that the lfo can create effects much like fm synthesis when the rate is high enough ..but it is actual pitch modulation .microtonic does not use FM synthesis ..as used in regular fm synthesis and it doesn't use phase synthesis either ..it it just plain linear pitch modulation from a lfo that goes into audio range .
I recreated it in reaktor and the results are identical with microtonic , I chop off my head if anyone here can recreate the results with fm synthesis ...it's all really obvious when you do a side to side comparison and look at the waveforms on osciloscope
I will upload the ens..later , it is just a verry verry simple oscilator ....as I have described above
---
i think you misunderstand the word FM-synthsis and the name of the F- and the P-input:
FM-synthsis is a special methode to modulate oscillators.
Using the F-input of any REAKTOR-oscillator doesn't mean that you are using such synthesis.
P- and F-input determine only the step-width of the basic ramp oscillator inside of every REAKTOR oscillator.
As mostly the P-input is used to change the basic frequency by keyboard it is made as an event input to lower the CPU usage. It is not neccessary.
So using only the F-input of an oscillator, you have to calculate such events to get a proper frequency change (P2F-module). You have to hold in mind that an unconnected P-input means that it is connected to 0 which means a frequency a ca. 8Hz. So if you want to have the „exact” frequency you have to add a -300-constant to the P-input (means a very very low frequency).
The rest is only basic mathematics.
BTW you can test pitch modulation with my uploaded ensemble RUHR.

ciao herw
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