[Linuxsampler-devel] Occasional clicks at the beginning of the played sample

[Holger M. <ho...@ma...>]

Xubuntu 12.04 LTS,
Kernels 3.5, 3.15-lowlatency and 3.14.3 with realtime patch
16 GB RAM, Core i5, SSD (desktop and notebook computer)
linuxsampler svn 2482 (I also tried a recent one yesterday but it crashed)
sfz engine used
jack used

Tested with linuxsampler standalone, linuxsampler-dssi and
linuxsampler-lv2

I experience occasional clicks at the beginning of played notes, about
one every 10-20 seconds, varying in their strength. It doesn't depend of
the soundcard used. It happens even with the dummy sound device when
playing a MIDI track with Rosegarden or Qtractor.

I managed to catch twice the same note/sample, one deformed with click,
one clean:
http://www.marzen.de/tmp/click.jpg

This is another one with click. It can be seen in the waveform:
http://www.marzen.de/tmp/click2.jpg

It seems that some samples simply get lost.

It happens on both of my computers.

There are no problems with JACK processing other audio, at least no that
I ever noticed.

I run out of ideas. This is a big problem for me because with occasional
klicks when using linuxsampler I can't use my sfz-soundfonts for high
quality recording.

Any ideas?