<div dir="ltr">Ralf, here is the output from dpkg:<div><br></div><div><div>i jack-capture 0.9.71-1 amd64 program for recording soundfiles with jack</div><div>ii jackass 1:20140520-1kxstudio1 amd64 JACK-MIDI support for VST hosts</div><div>ii jackd 5 all JACK Audio Connection Kit (default server package)</div><div>ii jackd1 2:0.124.2~20151211-2~xenial1 amd64 JACK Audio Connection Kit (server and example clients)</div><div>ii jackd1-firewire 2:0.124.2~20151211-2~xenial1 amd64 JACK Audio Connection Kit (FFADO backend)</div><div>ii jackutils-script 0.0.1avlinux6-1 all Simple Start and Stop Scripts to Utilize With QJackctl and Launch a2jmidid and aloop-daemon - Custom AV Linux Package</div><div>ii libjack-dev 2:0.124.2~20151211-2~xenial1 amd64 JACK Audio Connection Kit (development files)</div><div>ii libjack0:amd64 2:0.124.2~20151211-2~xenial1 amd64 JACK Audio Connection Kit (libraries)</div><div>ii libjack0:i386 2:0.124.2~20151211-2~xenial1 i386 JACK Audio Connection Kit (libraries)</div><div>ii qjackctl 2:0.4.1-1kxstudio2 amd64 User interface for controlling the JACK sound server</div><div>ii screencapjack-script 0.1.2avlinux8-1 all A very basic screen capture script using ffmpeg and jack-capture, the script is installed to /usr/local/bin and can edited with a text editor. Custom AV Linux Package</div></div><div><br></div><div><br></div><div>I am using buffer size 128, N=3, 48000hz. When I use N=2, all I hear is some clicking. I don't currently have an external instrument or tuning fork. I think the latency problem may be due to the above - seems I installed things from kxstudio that I didn't realize. I'm not sure why I can't use an even smaller buffer size; I guess pianoteq is too cpu intensive.</div><div><br></div><div>When I take jack out of the equation and play an mp3 file thru ecasound and the 2-way crossover, it works correctly and sounds good.</div><div><br></div><div>By the way, I'm embarrassed to admit that I really have forgotten my admin password, so I think I need to re-install AVL. That would get me back to the correct baseline for Jack in AVL. But then I would have to decide whether to re-install ecasound - which might have been what corrupted jack for me?? Or, to forget ecasound and use zita-Irc.</div><div><br></div><div>Thanks,</div><div>John</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jan 20, 2017 at 8:07 AM, Ralf Mardorf <span dir="ltr"><<a href="mailto:ralf.mardorf@alice-dsl.net" target="_blank">ralf.mardorf@alice-dsl.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Fri, 20 Jan 2017 06:59:50 -0500, john gibby wrote:<br>
>I did searches thru install packages and saw nothing related to jack1<br>
>that got installed by mistake.<br>
<br>
</span>To list all jack related packages that are installed run<br>
<br>
mkdir /tmp/empty_dir<br>
cd /tmp/empty_dir/<br>
dpkg -l *jack* | grep ii<br>
<br>
This doesn't ensure that nothing jack related is in a critical path, if<br>
you should have installed something without a package or assuming you<br>
did remove a package without removing all files, that were provided by a<br>
package.<br>
<br>
>My piano app see's a 128 sample buffer [...] I seem to feel too much<br>
>latency.<br>
<br>
You started jack with 128 frames and periods are 2 or 3, for a sample<br>
rate at 44.1 KHz or 48 KHz?<br>
<br>
If so, play a note and check if the tuning at the audio output is<br>
correct? Use an external instrument tuner or compare the audio output<br>
with an external instrument or tuning fork.<br>
<br>
Regards,<br>
Ralf<br>
<div class="HOEnZb"><div class="h5">______________________________<wbr>_________________<br>
Linux-audio-user mailing list<br>
<a href="mailto:Linux-audio-user@lists.linuxaudio.org">Linux-audio-user@lists.<wbr>linuxaudio.org</a><br>
<a href="http://lists.linuxaudio.org/listinfo/linux-audio-user" rel="noreferrer" target="_blank">http://lists.linuxaudio.org/<wbr>listinfo/linux-audio-user</a><br>
</div></div></blockquote></div><br></div>