Difference between these two near identical Superwave synths

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The Professional and Trance-Pro by SuperWave are two fantastic synths. They are created with SynthEdit. I always wondered what the real difference was between these two. So I created two identical init saw patches (notably -> LP filter open, resonance off) and played 3 notes with them. Left (= white) the Professional, right (= red) the Trance-Pro.

The results are obvious. The Trance-Pro has more higher frequencies. Now I wonder why that is? The filters are identical and were open so don't play a role at all. So it must be at the oscillators. I heard something about the Gibbs effect. Does that mean the creator put an additional LP filter between the visible filter and the oscillator at the Professional? It is strange, because for low notes they are identical, see the first diagram. The difference becomes bigger at higher keys. So the hidden LP filter was fixed at a given frequency? Would love to know what is going on.

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+2 octaves up

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another +2 octaves up

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I am not 100% sure the filters in both synths are identical. So I could try to sample them with the filters turned to fully open HP filters. Wonder if that would make a big difference.
Dúnedain

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Here's a recent thread about the phenomenom with many good replies

viewtopic.php?f=1&t=474767

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<delete>
Last edited by egbert101 on Sun Feb 04, 2018 11:48 am, edited 1 time in total.
<List your stupid gear here>

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Dúnedain wrote: The filters are identical and were open so don't play a role at all.
...you blindly assume...
my other modular synth is a bugbrand

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whyterabbyt wrote:
Dúnedain wrote: The filters are identical and were open so don't play a role at all.
...you blindly assume...
... you blindly replied .... if you better read I suggest to record them using HP filters, at the end of my post.

Also: the dev told me they were identical
Dúnedain

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Dúnedain wrote:
whyterabbyt wrote:
Dúnedain wrote: The filters are identical and were open so don't play a role at all.
...you blindly assume...
... you blindly replied .... if you better read I suggest to record them using HP filters, at the end of my post.
Which would blindly make no difference.
Also: the dev told me they were identical
So why did you say otherwise?
I am not 100% sure the filters in both synths are identical.
my other modular synth is a bugbrand

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I used to own them as well, they are indeed identical except for the Gibbs effect turned on on the Professional. On the Trance-Pro you can also hear higher frequencies on very low octaves, while they are missing on the Professional (which is a good thing).

https://en.wikipedia.org/wiki/Gibbs_phenomenon

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fluffy_little_something wrote:I used to own them as well, they are indeed identical except for the Gibbs effect turned on on the Professional.
Yes I saw your extensive review on this site.
On the Trance-Pro you can also hear higher frequencies on very low octaves, while they are missing on the Professional (which is a good thing).
This is just partly true I think. If you look at the first diagram the harmonics are almost identical. Despite that: the Trance-pro plays every note one octave higher compared to the Professional, giving you the illusion it sounds more bright. So you should compensate for that. Despite that it does sound more bright if you go up the keyboard. This is obviously the Gibbs effect thing at the Professional. It clearly isn't there for low notes, see the first print screen. So what did Superwave do? Did they put an extra (hidden) filter element between the osc and the visible filter?

Keep in mind this is a SynthEdit synth. So SuperWave is somewhat limited in what they can do.
Dúnedain

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No, it has nothing to do with pitch. On the same very low notes there is no alien high-frequency content on the Professional.
I think the Gibbs thingy is just a switch in one of the SynthEdit modules. I remember the developer made a custom version of one of his other synths for me, where I asked him to turn the Gibbs thingy off as well.

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fluffy_little_something wrote:No, it has nothing to do with pitch. On the same very low notes there is no alien high-frequency content on the Professional.
But then why do they look identical at the first freq plot ?

I think the Gibbs thingy is just a switch in one of the SynthEdit modules. I remember the developer made a custom version of one of his other synths for me, where I asked him to turn the Gibbs thingy off as well.
Wow great! :)
Well I think I know enough. After all any synth should be able to create the Gibbs effect by doing a key follow for the filter.
Dúnedain

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I don't know how you measured, but no, you can't produce the same brightness on the Professional, nor the warmer sound on the Trance-Pro, no matter how you set the controls.

But I no longer use those two synths, the sound is just not at the same level as that of good non-SE synths.

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