[Ardour-Dev] Fwd: Re: "Click of deaf" bug

[Natanael Olaiz]

Hi Christian,

Thanks for your feedback.
I'm forwarding this to the list thinking that you pressed the wrong 
reply button, I hope you don't mind.

I'll try to do some more tests also. It would be nice to have the 
simpler session that reproduces the bug to upload it in the tracker...


Best regards,
Natanael.

-------- Original Message --------
Subject: 	Re: [Ardour-Dev] "Click of deaf" bug
Date: 	Fri, 16 Jul 2010 14:38:43 +0200
From: 	Christian Zollner <osterchrisi at gmx.at>
To: 	Natanael Olaiz <nolaiz at gmail.com>



Same happened to me a few times lately...
I wasn't able to reproduce it in any way but I had the feeling it
happens whenever you split a region, move the second one to another
track without applying any changes to it and later putting it back to
its original position.

When I have more time next week I could try to reproduce it...

Best,
chrisi




Am Freitag, den 16.07.2010, 10:55 +0200 schrieb Natanael Olaiz:
>  Hi,
>
>  We found a strange and harmful bug in Ardour, and unfortunately, it
>  looks difficult to reproduce.
>
>  Description: two regions are one just after the other (so, no crossfade)
>  makes a several hundred dBs click when the playhead pass over the
>  intersection: http://imagebin.ca/view/LSvEnz.html
>
>  Some observations:
>       - It happens even without any plugin or automation on the track
>       - If the gain of the track is 0, it doesn't happens. If it's
>  greater, the bug happens and it looks proportional to the track gain.
>       - Related to the previous?: when there is a plugin applied, the
>  gain bug is happening after the plugin process (1 mono track with 22
>  outputs without plugin: all peaks fall -after several seconds- all
>  together, meanwhile 1 mono track with 22 outputs with a spacialization
>  plugin applied: the peaks fall differently because the process)
>       - It looks to happen only when the starting region have the fade-in
>  deactivated (no matter the state of the previous ending fade-out).
>       - When reloading the session, it doesn't happen. But if you move
>  the second region some times, and put it again snapped to the first one,
>  it usually happens again each time you pass over the region intersection
>  until you close the session again.
>
>  We tried to simplify the session removing all the tracks but the
>  problematic one, and still happens. Then we tried to remove clean the
>  unused sources and move the regions to the begining, and we could not
>  reproduce it again...
>
>
>  Any hint to debug it? Maybe a NaN in the fade-in algorithm?
>
>
>  Thanks in advance.
>
>  Best regards,
>  Natanael.
>
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>  ardour-dev at lists.ardour.org
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