Re: [Linuxsampler-devel] LinuxSampler BUGS to fix (Christian & others)

[Mark K. <mar...@co...>]

Hi Benno,
   I built CVS this morning and gave it a shot. Sustain is working.
Still big clicks on each key release, so I guess no release samples or
default envelope yet. (I think that's expected, but just in case it's
supposed to be there I'll report it's not working for me.)

   This version seems to load very much faster for me. Have you done
something in that area?

   I am not hearing the high pitched noise on my system, and I'm never
getting very high on CPU usage. I never see about about 3% on gkrellm
even at close to 64 voices.

   I do see the segfault when I get to 64 voices. (I thought LS wasn't
going to have a voice limitation?)

   I am also seeing a stranger, and different segfault. I hold the
sustain pedal and just arpeggiate a C major chord and let the voices
build up, but only to about 55-60 voices. Next I hold the sustain pedal
and let the voice count decay back to 0. Now, with the sustain pedal
still held, I start the arpeggio again, it segfaults immediately and
differently:

The first is a voice overload segfault:

Wizard root # linuxsampler --numfragments 2 --gig
/mnt/samples/Gigs/Pianos/Bardstown\ Audio/The\ Bosendorfer\ Imperial\
Grand\ Version\ 2.2.gig 
Loading gig file...OK
LinuxSampler initialization completed.
Segmentation faultms: 060  

This one is the other segfault:

Wizard root # linuxsampler --numfragments 2 --gig
/mnt/samples/Gigs/Pianos/Bardstown\ Audio/The\ Bosendorfer\ Imperial\
Grand\ Version\ 2.2.gig 
Loading gig file...OK
LinuxSampler initialization completed.
Segmentation faultms: 014  
Wizard root # 

Request: Could you possibly put the plughw:0 hack instructions in a
README that gets downloaded with the code?

Thanks,
Mark


On Sat, 2003-11-15 at 09:39, be...@ga... wrote:
> Christian told me that he wants to begin to implement the event system 
> but I'd prefer that we fix a few bugs first, otherwise it will harder and
> harder to find them.
> 
> - LS crashes when the maximum voice count is achieved
> - when you hold a voices till the sample terminates you hear a continuing high
> pitched noise. I guess this is the buffer of the voice still being mixed
> to the sum buffer. Plus in that case the CPU usage goes up.
> - sometimes a voice gets cut off and only the RAM part is played.
> 
> So folks (particularly Christian) check out the latest CVS and start finding
> the bugs. (I have no time for the next few days)_
> 
> regarding the event system I will post a message tonite or tomorrow because
> I have a few questions for David how to optimize the system.
> 
> regarding the polyphony of my VIA with crappy FPU machine:
> I tested a piano .MID file that makes heavy use of sustain pedal. 
> My box is able to keep up with peaks of 100 stereo voices.
> = 200 voices expressed gigasampler terminology :-)
> Better not imagine what an Athlon 3000 can deliver :-)
> So basically it means that a mini-itx VIA box has enough horsepower
> to ne turned into a high polyphony, high quality piano expander.
> :-)
> 
> Let me know (on the list) if you find the bugs mentioned above, and
> then let's start with the event sysyem.
> 
> cheers,
> Benno
> http://www.linuxsampler.org
> 
> 
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