Zero Delay Feedback Filter (How to test if your synth has a )- Xils-Lab White Paper -

[Lotuzia]

blah blah blah...

Here is a simple test that you can make to figure out if you favorite soft synthesizer has a zero-delay-feedback filter...

blah blah blah

just ask the developer, much less hassle

Just dont read this thread, much less hassle for you.

We propose some test process, you dont need it, its ok, some other posters found it interesting, and its probably merely for this kind of people that this kind of threads might be usefull.

[ariston]

My new Grundig vacuum cleaner has a zero-delay feedback filter. It's a real blessing for those with allergies. Inexplicably, it failed this test, though.
This leaves only two possibilities: either the test is bogus, or Grundig lied about their product. Either way, a filter sweep with full resonance sure sounds sweet on it, but only on parquet flooring. On carpet, it tends to lose too much volume, and the transients are a bit muffled. Haven't tried it on the leather couch yet, but I'm optimistic.

My old Panasonic sure as hell couldn't get that sound, not even with 800W oversampling.

[JoeCat]

+1 ditch the dongle!

[Kriminal]

blah blah blah...

Here is a simple test that you can make to figure out if you favorite soft synthesizer has a zero-delay-feedback filter...

blah blah blah

just ask the developer, much less hassle

Just dont read this thread, much less hassle for you.

We propose some test process, you dont need it, its ok, some other posters found it interesting, and its probably merely for this kind of people that this kind of threads might be usefull.

you mean stupid people?

What exactly is this thread about....trying to ptove xils has zdf and that 'other' companies dont?

Looks to me like very unsubtle trolling....

[Bronto Scorpio]

My new Grundig vacuum cleaner has a zero-delay feedback filter. It's a real blessing for those with allergies. Inexplicably, it failed this test, though.
This leaves only two possibilities: either the test is bogus, or Grundig lied about their product. Either way, a filter sweep with full resonance sure sounds sweet on it, but only on parquet flooring. On carpet, it tends to lose too much volume, and the transients are a bit muffled. Haven't tried it on the leather couch yet, but I'm optimistic.

My old Panasonic sure as hell couldn't get that sound, not even with 800W oversampling.

You need to buy the nonlinear analog summing engine for it to perform better on carpets.

Cheers
Dennis

[ariston]

My new Grundig vacuum cleaner has a zero-delay feedback filter. It's a real blessing for those with allergies. Inexplicably, it failed this test, though.
This leaves only two possibilities: either the test is bogus, or Grundig lied about their product. Either way, a filter sweep with full resonance sure sounds sweet on it, but only on parquet flooring. On carpet, it tends to lose too much volume, and the transients are a bit muffled. Haven't tried it on the leather couch yet, but I'm optimistic.

My old Panasonic sure as hell couldn't get that sound, not even with 800W oversampling.

You need to buy the nonlinear analog summing engine for it to perform better on carpets.

Cheers
Dennis

Really? Damn, it was already expensive... and very taxing on the electrical supply, but as long as we only run one instance, it's okay.
At least we only have one small carpet in the house, so it's no biggie. I'll just vacuum around it.

[Lotuzia]

Since a certain competitor has released a certain synth some developers seem to get a bit paranoid. I, and many others, will judge the sound with their ears. Pretty videos and pictures won't help here.

The saddest thing really is that XILS synths are really good! There is really no need for stuff like this.

The *really* sad thing is that the whole thing is a lie though! This is no accurate test. I don't have synth1 installed at the moment but I'm sure this test would show that it has 0-delay-whatever-latestmarketingphrase-0df filters. Which it doesn't and it sounds great nontheless.

Cheers
Dennis

First : The really sad thing imho is that we did not wait that Saurus ( I can give names if you're too shy ) was released for saying that Xils-Lab synths have 0df filters, just fyi.... So your statement "since a certain competitor .... " is just false from the beginning.

Then : And as for beeing accused to be lying , we're waiting for your Synth1 tests ( because you said you were sure of that ). Then we'll see ........

Its curious like when some other people are mentioning 0df filters for other synths its the alpha and omega of superiority, and when we just say " hey we have some little tests to allow you to see if your synths have it, and btw there are other synths than the ones always mentioned by certain people " we get flamed this way.

Its was very interesting in this regard to see that the Saurus thread just began like this : same people expressing "more than doubts" on the fact they could have done a 0df filter. " Mamma mia did they dare ? they must be lyers " So i dont know who is afraid of "competing products" but eventually these are definitely not people like us

Btw I should not have to say it, but as Richard mentioned this I think I could add some info as well : Of course Xils synths have non linear behaviour.

Then the test is valid for selfosc LPF filters, this is clearly mentioned in the beginning of the OP (not Biquad filters for example ) Even if its very simple, one has still to observe a few minimal rules to run it.

[Nielzie]

Hmmm another thread seems to get derailed from proper gentle discussions.

Shouldn't this just be a normal discussion about how to measure a zdf in digital synths?

Such agressive "anti-marketing" going on these days, why?

[Lotuzia]

blah blah blah...

Here is a simple test that you can make to figure out if you favorite soft synthesizer has a zero-delay-feedback filter...

blah blah blah

just ask the developer, much less hassle

Just dont read this thread, much less hassle for you.

We propose some test process, you dont need it, its ok, some other posters found it interesting, and its probably merely for this kind of people that this kind of threads might be usefull.

you mean stupid people?

What exactly is this thread about....trying to ptove xils has zdf and that 'other' companies dont?

Looks to me like very unsubtle trolling....

Who did mention stupid people ? Just you. SO I'll leave you this statement.

Ours was that people who might be interested in this problem could find some information, together with some audio tests. Use it, dont use it, its beyond us.

So The purpose of this test is to determine if any synth ( with the filter type specidied ) has a 0df filter. You can also make this test with real analog gear btw.

Any synth. ........

[Nielzie]

I want the old KVR (until 2011) back!

[ariston]

Did anyone mention yet that this thread and its devious little intentions are utterly repugnant?

And the sad fact is, most consumers couldn't care less about the tech behind the scenes. We have ears, and we have experience, and no amount of thinly-veiled sand-kicking or pseudo-scientific testing will change that.

Respect to Xavier for his great work, I would very likely already own all three Xils synths were it not for ye dongle (no, I don't appreciate cut-down versions, I want the real deal). But maybe he should get someone else to do his "marketing" here, this boatload of half-digested crap must be hurting the business by now.

[Kriminal]

Ours was that people who might be interested in this problem

what problem is that exactly???

So The purpose of this test is to determine if any synth ( with the filter type specidied ) has a 0df filter. You can also make this test with real analog gear btw.

Any synth. ........

and? your point is? do you really think everyone is going to rush out and test all their synths ??? to what benefit exactly?
funny how you/xils never mentioned this until another company released a synth with zdf.....

too many saurus/diva threads for you recently????

[Kriminal]

Did anyone mention yet that this thread and its devious little intentions are utterly repugnant?

And the sad fact is, most consumers couldn't care less about the tech behind the scenes. We have ears, and we have experience, and no amount of thinly-veiled sand-kicking or pseudo-scientific testing will change that.

Respect to Xavier for his great work, I would very likely already own all three Xils synths were it not for ye dongle (no, I don't appreciate cut-down versions, I want the real deal). But maybe he should get someone else to do his "marketing" here, this boatload of half-digested crap must be hurting the business by now.

[hakey]

The purpose of this test is to determine if any synth has a 0df filter.

And it's a flawed test (as was pointed out almost immediately).

[ChiTown24]