Zebra click noise

[hastoy]

Hi,

When I play bass notes I hear a click on the attack of the sound (zebra 2.7), it's very obvious using a simple sine wave. When I use "Smooth Attacks" or a bit of attack fade in of course it helps a bit but you still don't have clean attacks. I'm pretty sure it's a bug and I think what happens is that the oscillators don't start at zero phase. Even if you shift the phase on purpose the shifting amount should have a bit of delay so that you preserve a 0 phase start (they do that in wave editors). Is there any newer version that corrects this ? Thanks !

Cheers

Guillaume

[EvilDragon]

Extremely fast envelope attack times will produce clicks - it's the nature of things.

[hastoy]

I understand that, you're right but if I create a simple 60Hz wave in adobe audition I hear a very small amount of noise on the attack. If I cut a few msec to start out of phase I get one big hugly click and it's exactly the same I get with Zebra ! The "smooth attack" parameter tries to solve that but it does a poor job at it... I guess I'm asking this parameter to be improved. Most people won't complain because they either use slow attacks or rich sounds. Besides that I love Zebra

[EvilDragon]

Did you try toggling the oscillator reset switch? See the manual.

[hastoy]

yes the reset switch is on so that the oscillator always starts at the same phase position. Then by rotating the phase manually the clicking amplitude changes. I think the Smooth Attacks parameter should handle that better. What it does in my opinion is adding a certain fade-in amount in relation to the phase position (and the pitch) which I think is the right thing to do but the fade-in values are simply not good enough... I can do that "manually" in a wave editor and get far better results, much cleaner sounding attacks.

[EvilDragon]

Smooth attacks option changes the shape of the envelope attack curve, I think. Doesn't do anything with phase and pitch.

[hastoy]

yes exactly and it should do it *in relation* with phase and pitch.

[EvilDragon]

Hm, I don't agree with that. Let's see what Urs says, if he chimes in.

[hastoy]

Noise is at max when osc starts at 90° phase and lowest at 0° phase so the fade in should be proportional to that. I could modulate the attack with the modulator that modulates phase but my point is that at 0° phase the osc attack makes more noise than it should (audition is cleaner). I had already complained that a sine in Zebra had a bit of harmonics and it turned out to have been a bug and got corrected (thanks again to Urs I hope this one gets corrected too

[EvilDragon]

You cannot compare a realtime synthesizer with a generated sine in Audition.

[bmrzycki]

Are you using an ENV and not Gate for the module lane? The Gate adds considerable click to the sound's attack.

[pdxindy]

yes the reset switch is on so that the oscillator always starts at the same phase position. Then by rotating the phase manually the clicking amplitude changes. I think the Smooth Attacks parameter should handle that better. What it does in my opinion is adding a certain fade-in amount in relation to the phase position (and the pitch) which I think is the right thing to do but the fade-in values are simply not good enough... I can do that "manually" in a wave editor and get far better results, much cleaner sounding attacks.

I understand you are asking for a smarter attack smoothing function... but there are so many permutations of how to create the initial attack, that inevitably you will get clicks somehow... in the meanwhile, it is easy enough to resolve by adjusting the envelope.

[hastoy]

yes I use the ENV mode on the module lane.

[CandeFan]

Use the attack knob.

[Painmooser]

could you give some sound examples please?