[ardour-dev] Gain automation twitchiness

[Mark Knecht]

Joe,
   I've seen this also. I'm on something earlier than beta22. What I
see is the master fader jumping down to -inf and back to the proper
level. I do not hear any problems so I assume that it's jsut a
graphics problem.

   It often also happen on my system in time with the music - i.e. -
at beat 0 in a new bar. Don't ask me why. Go figure... ;-)

- Mark


On Wed, 22 Dec 2004 06:43:10 -0500, Joe Hartley <jh at brainiac.com> wrote:
> I have 2 tracks in a session that have gain automation on them.  I
> noticed that beta22 introduced a "twitchiness" on playback/export.
> 
> The levels will jump momentarily to levels they were never set to.
> As an example, I have a vocal track set to -2.2dB for a certain
> section of the song, and at -0.9dB for others.  The level jumps up
> to zero once or twice a second in some parts of the song!
> 
> There also seems to me some co-mingling of automation data.  I have
> a gutar track that runs at -5.9dB for parts of the song, and I see
> that level being jumped to by the vocal track.  The vocal track
> ends up at that level every time, even though I just went and re-wrote
> the gain automation, and it was set at -0.9dB at the end.
> 
> This may have something to do with the mis-assignment of gain automation
> data that I'd noticed and reported last night, when the vocal automation
> got assigned to my master track.
> 
> Here's a cut-n-paste of the automation file for the vocal submix.
> There aren't nearly as many data points on here as there were "twitches".
> 
> version 1
> g 11264 1
> g 157696 1
> g 168960 0.902243
> g 180224 0.799211
> g 191488 0.722795
> g 214016 0.722795
> g 225280 0.799211
> g 236544 0.799211
> g 247808 0.741411
> g 270336 0.741411
> g 281600 0.779616
> g 4595712 0.779616
> g 4606976 0.799211
> g 4618240 0.819139
> g 4629504 0.839403
> g 4640768 0.839403
> g 4652032 0.860007
> g 4663296 0.880952
> g 4685824 0.880952
> g 4697088 0.902243
> g 6904832 0.902243
> 
> --
> ======================================================================
>       Joe Hartley - UNIX/network Consultant - jh at brainiac.com
> Without deviation from the norm, "progress" is not possible. - FZappa
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