21 Jan
2017
21 Jan
'17
12:41 a.m.
Ralf, here is the output from dpkg:
i jack-capture 0.9.71-1 amd64 program
for recording soundfiles with jack
ii jackass 1:20140520-1kxstudio1 amd64
JACK-MIDI support for VST hosts
ii jackd 5 all JACK
Audio Connection Kit (default server package)
ii jackd1 2:0.124.2~20151211-2~xenial1 amd64 JACK
Audio Connection Kit (server and example clients)
ii jackd1-firewire 2:0.124.2~20151211-2~xenial1 amd64 JACK
Audio Connection Kit (FFADO backend)
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
ii libjack-dev 2:0.124.2~20151211-2~xenial1 amd64 JACK
Audio Connection Kit (development files)
ii libjack0:amd64 2:0.124.2~20151211-2~xenial1 amd64 JACK
Audio Connection Kit (libraries)
ii libjack0:i386 2:0.124.2~20151211-2~xenial1 i386 JACK
Audio Connection Kit (libraries)
ii qjackctl 2:0.4.1-1kxstudio2 amd64 User
interface for controlling the JACK sound server
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
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.
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.
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.
Thanks,
John
On Fri, Jan 20, 2017 at 8:07 AM, Ralf Mardorf <ralf.mardorf(a)alice-dsl.net>
wrote:
On Fri, 20 Jan 2017 06:59:50 -0500, john gibby wrote:
I did searches thru install packages and saw
nothing related to jack1
that got installed by mistake.
To list all jack related packages that are installed run
mkdir /tmp/empty_dir
cd /tmp/empty_dir/
dpkg -l *jack* | grep ii
This doesn't ensure that nothing jack related is in a critical path, if
you should have installed something without a package or assuming you
did remove a package without removing all files, that were provided by a
package.
My piano app see's a 128 sample buffer [...] I
seem to feel too much
latency.
You started jack with 128 frames and periods are 2 or 3, for a sample
rate at 44.1 KHz or 48 KHz?
If so, play a note and check if the tuning at the audio output is
correct? Use an external instrument tuner or compare the audio output
with an external instrument or tuning fork.
Regards,
Ralf
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