LADSPA Multiband EQ

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Gale Andrews
LADSPA Multiband EQ
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Some users have been reporting considerable instabiilty with
Multiband EQ (mbeq_1197.dll) in the Windows port of the
LADSPA plug-ins, causing Audacity to crash. And on both my
XP machines, it won't show in the Effect menu in 1.3.5 release
or CVS HEAD, but does in 1.2.6. Can anyone else replicate
issues with visibility/stability with this plug-in, especially those on
other platforms? A test for instability would be just to run it
two or three times in succession, adjusting a number of the
sliders each time.

Should we contact Steve about this and/or take any other
action?


Thanks

Gale  

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Caecos
Re: LADSPA Multiband EQ
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I'll give a try tonight on my machine running Vista...

Marc

--------------------------------------------------
From: <gale@...>
Sent: Wednesday, July 02, 2008 3:39 PM
To: <audacity-devel@...>
Subject: [Audacity-devel] LADSPA Multiband EQ

>
> Some users have been reporting considerable instabiilty with
> Multiband EQ (mbeq_1197.dll) in the Windows port of the
> LADSPA plug-ins, causing Audacity to crash. And on both my
> XP machines, it won't show in the Effect menu in 1.3.5 release
> or CVS HEAD, but does in 1.2.6. Can anyone else replicate
> issues with visibility/stability with this plug-in, especially those on
> other platforms? A test for instability would be just to run it
> two or three times in succession, adjusting a number of the
> sliders each time.
>
> Should we contact Steve about this and/or take any other
> action?
>
>
> Thanks
>
> Gale  
>
> -------------------------------------------------------------------------
> Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
> Studies have shown that voting for your favorite open source project,
> along with a healthy diet, reduces your potential for chronic lameness
> and boredom. Vote Now at http://www.sourceforge.net/community/cca08
> _______________________________________________
> Audacity-devel mailing list
> Audacity-devel@...
> https://lists.sourceforge.net/lists/listinfo/audacity-devel
>

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Steve Harris-2
Re: LADSPA Multiband EQ
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In reply to this post by Gale Andrews
On 2 Jul 2008, at 20:39, gale@... wrote:

>
> Some users have been reporting considerable instabiilty with
> Multiband EQ (mbeq_1197.dll) in the Windows port of the
> LADSPA plug-ins, causing Audacity to crash. And on both my
> XP machines, it won't show in the Effect menu in 1.3.5 release
> or CVS HEAD, but does in 1.2.6. Can anyone else replicate
> issues with visibility/stability with this plug-in, especially those  
> on
> other platforms? A test for instability would be just to run it
> two or three times in succession, adjusting a number of the
> sliders each time.
>
> Should we contact Steve about this and/or take any other
> action?

Hi,

I'm still sort-of lurking here.

I can't think of anything that might make it appear or not appear, but  
there was a bug that happened not to bite on linux, but could have on  
other platforms. I think it was fixed in one of the latest releases  
though.

- Steve

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Vaughan Johnson
Re: LADSPA Multiband EQ
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In reply to this post by Gale Andrews
Not a bug in the Multiband EQ code. Debugging, I got, in
LadspaEffect.cpp, line 284:

    Run-Time Check Failure #3 - The variable 'rstart' is being used
without being initialized.

So I initialized it and lstart to 0 , but really the logic needs to be
fixed to set rstart to a valid value in all cases, because after
initializing rstart to 0, it crashes in LadspaEffect::ProcessStereo().

- Vaughan


gale@... wrote:

> Some users have been reporting considerable instabiilty with
> Multiband EQ (mbeq_1197.dll) in the Windows port of the
> LADSPA plug-ins, causing Audacity to crash. And on both my
> XP machines, it won't show in the Effect menu in 1.3.5 release
> or CVS HEAD, but does in 1.2.6. Can anyone else replicate
> issues with visibility/stability with this plug-in, especially those on
> other platforms? A test for instability would be just to run it
> two or three times in succession, adjusting a number of the
> sliders each time.
>
> Should we contact Steve about this and/or take any other
> action?
>
>
> Thanks
>
> Gale  
>
>  

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along with a healthy diet, reduces your potential for chronic lameness
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