Zebra2 Latest Version: 2.1 - Jan 19 2007

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The same thing can be tested on Acid...it happens the same?

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raikard233 wrote:Urs, what about over the thing on restarting sound on sequencer loop mode?
<snip>
I've asked this thing some time ago but I never saw this on the buglist..
Do you think that this thing will be fixed on the final release??
Good you asked! It's such a simple thing that I think it can easily be fixed. I must admit I forgot about that one.

(it's in here as a detection for playback start on hosts that don't send such message, but it gets corrupted when teh song position pointer jumps back in a loop, so I just have to make it 2 lines of code smarter)

Cheers,

;) Urs

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raikard233 wrote:In FLStudio when I make a "midi" piano roll loop using Zebra2 the sound restart when the loop return to the first note....this is more audible when you use a delay...
Hmm. I tried this with energyXT with a simple clicking sound and audible delay in Zebra2.
When repeating the loop of notes in eXT the delay just keeps playing as it should. No problem at the beginning of the loop.

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spritex wrote:
raikard233 wrote:In FLStudio when I make a "midi" piano roll loop using Zebra2 the sound restart when the loop return to the first note....this is more audible when you use a delay...
Hmm. I tried this with energyXT with a simple clicking sound and audible delay in Zebra2.
When repeating the loop of notes in eXT the delay just keeps playing as it should. No problem at the beginning of the loop.
It depends on how the host works.

When I implemented that stuff I worked with Logic mostly. Logic used to just increase the song position upon loops even though the it obviously jumps back (has changed in 7.2 I think). Other hosts let the song position indeed snap back.

It's gonna be a simple fix I think. - I even think I already implemented it for the ltmLabs, so I just have to look it up there...

Cheers,

;) Urs

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Super!
Alles klar,
und so viel danke fur die schnelle antwort!! :D

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Urs wrote:Uh oh...

is that all new? Did that happen with previous versions?

My stuff should not experience any difference wheather your audio buffers are 64 samples or more.

What I suspect is that there are short cpu spikes every now and then when several oscillators need to recalculate wavetables at once. This effect may be stronger on Win than on Mac as I use different libraries for FFT and stuff there. - I already worked out some concepts to distribute the heavy osc parts more evenly across rendering, so I may try this within the next couple of days.

MoodyBat, when the PC crashed after an hour, was that with the Z2 GUI open?

Yes it was all the time
Later,

;) Urs

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MoodyBat wrote:
Urs wrote:Uh oh...

is that all new? Did that happen with previous versions?

My stuff should not experience any difference wheather your audio buffers are 64 samples or more.

What I suspect is that there are short cpu spikes every now and then when several oscillators need to recalculate wavetables at once. This effect may be stronger on Win than on Mac as I use different libraries for FFT and stuff there. - I already worked out some concepts to distribute the heavy osc parts more evenly across rendering, so I may try this within the next couple of days.

MoodyBat, when the PC crashed after an hour, was that with the Z2 GUI open?

Yes it was all the time
Later,

;) Urs
May be I wasn't that clear, PC was fine just zebra didn't responded to midi activity at all -no sound. sorry for misunderstanding

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MoodyBat wrote:
MoodyBat wrote:
Urs wrote:MoodyBat, when the PC crashed after an hour, was that with the Z2 GUI open?
Yes it was all the time
May be I wasn't that clear, PC was fine just zebra didn't responded to midi activity at all -no sound. sorry for misunderstanding
Okay... that sounds much better...

Does that only happen with Zebra?

(I have similar problems when waking up a Mac after it fell asleep, when the drivers or something just went nuts occasionally)

;) Urs

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Urs wrote:
MoodyBat wrote:
MoodyBat wrote:
Urs wrote:MoodyBat, when the PC crashed after an hour, was that with the Z2 GUI open?
Yes it was all the time
May be I wasn't that clear, PC was fine just zebra didn't responded to midi activity at all -no sound. sorry for misunderstanding
Okay... that sounds much better...

Does that only happen with Zebra?

(I have similar problems when waking up a Mac after it fell asleep, when the drivers or something just went nuts occasionally)

;) Urs
yes I haven't noticed something like that before with other plugins, after I reloded zebra it worked just like before.

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I think this may be the same thing as the glitch bug we have been talking about. Like, at least with multiple instances, sometimes patches don't sound at all, or they sound like digital crackles.

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Okay, I'm working my way through the list...

LFO Random Glide - fixed
Denormals on Shapers and RingMod - fixed
Resets on looped regions in some hosts - probably fixed, must be tested

Will look after the Arpeggiator bug now...

Later,

;) Urs

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Sounds similar to the problems I had with my latest product: when using multiple instances there would be crackle or glitches in audio. Urs, you might want to check that your third party libs are thread safe (even if they do something trivial and intermittent). One way of confirming this is to turn off hyperthreading or dual-cpu support on the machines that are getting this problem.

Sorry if I'm stating something obvious to you..!

Best,

Mike

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Mike Janney wrote:Sounds similar to the problems I had with my latest product: when using multiple instances there would be crackle or glitches in audio. Urs, you might want to check that your third party libs are thread safe (even if they do something trivial and intermittent). One way of confirming this is to turn off hyperthreading or dual-cpu support on the machines that are getting this problem.

Sorry if I'm stating something obvious to you..!
Hey Mike,

Yeah, sounds like it. I just don't use any external libraries (except for graphics)... well, maybe I confused a setting in the compiler... we'll see...

Cheers,

;) Urs

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Well, I had glitches even with hyperthreading OFF. But at that point the "processor scheduling" was at the "background processes" position.

I'll try without hyperthreading and processor scheduling at "programs" position just for the sake of it...

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I just don't use any external libraries

Not even any standard C/C++ library?

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