jack runs at 44099 instead of 44100

  • stratojaune
Posted: Wed, 06/10/2009 - 05:40
Hi all, The pc runs with 64Studio 2.1, and everything is ok. Except, since 2 days when use qjackctl, the applet appears and jackd starts, but it runs at 44099 Hz, instead of 44100 like it's set in its config panel. Search this on web and forums, but can't find anything. Somebody have an idea ?

Output

  • Quentin Harley
  • 05/24/07
  • Sat, 08/08/2009 - 18:25
I have an original RME Hammerfall 9632 card, feeding a DDX3216 via an ADAT TOSLINK expansion port, and the SPDIF I/O Gives me 18ch in and out to the DDX3216.

Just what was noted here

  • stratojaune
  • 09/10/08
  • Sat, 08/08/2009 - 05:36
Just what was noted here with 2outs, Plugwh: seems to be fine to rec but not to read. Maybe you wish to save several settings for Jack I'm curious : 18 outputs, what hardware are you feeding with that Quentin ?

Many thanks for the link !

  • stratojaune
  • 09/10/08
  • Thu, 08/06/2009 - 05:30
This site seems cool, and contains a lot of interesting things. Hehe, something... I was looking for initials... Search The Holy Graal or "sthg" like !! Thanks again for plugin.org

Guess what!

  • Quentin Harley
  • 05/24/07
  • Wed, 08/05/2009 - 18:46
Changing the setting actually improved the performance of my system as well! Thanks for sharing, Quentin

Ok perhaps not...

  • Quentin Harley
  • 05/24/07
  • Thu, 08/06/2009 - 15:51
It worked fine until I opened up a complex ardour session. I saw my 18ch out device has been reduced to 2...

Stratojaune, did you fix

  • pleasebeus
  • 06/12/09
  • Tue, 08/04/2009 - 14:15
Stratojaune, did you fix this? My problem is similar but could be for a different reason; I often find Jack running at 48000 on boot up even if qjackctrl reports 44100. I have to switch jack to sthg other than the reported 44100, start, stop and then select 44100 again to get it right. Any ideas? AMD Athlon 2400+, 3GB, nVidia GeForce4 MX 440-8X, twin monitors, M-Audio 1010LT

Yes, have fixed that !

  • stratojaune
  • 09/10/08
  • Tue, 08/04/2009 - 20:28
Paul Davis suggest to change in QJack the card from hw: to plughw: FOR OUTPUT, and of course ;-)) it rocks !! Since, one says it improves CPU use, but when you record who cares if you switch off plugins ? Just save 2 settings in QJack, one for rec and one for mix will do the job, as far as I can be sure. I can't understand how Jack can run 48 and QJack report 44 ? Doesn't Q read J's verbose ? And, what is "sthg" please ? Do you have anything from "winblowsTM" in your machine ? Hope that help, except for the line above which was only for this smile on your face ! By curiosity, cause I plan to buy some more RAM, with "3GB" are you able to do everything you like, and how many tracks and plugins can you read in Ardour ?? Like to know to see if 2 GB could be enough for waiting to win plenty of cash in lotto and go to Electric Ladyland to mix tunes...

Of course, now I try to

  • pleasebeus
  • 06/12/09
  • Wed, 08/05/2009 - 12:54
Of course, now I try to repeat my JAck 44/48 issue it's not happening... but it does happen a lot! I don't know what I can check to see which app is causing the problem or where to trace the real value via the command line. Maybe it's Ardour not reading properly... sthg = something With my current setup, I haven't had a DSP% problem for a long time in Ardour. I bus plugins as much as possible and I avoid certain high load plugins - take a look at [plugin.org's faq](http://plugin.org.uk/faq.php) which covers the Steve Harris lapsda plugins. The FAQ gives you a rough guide to processor loads for each one. I typically have a dozen tracks going with maybe 20-25 plugins either on the track for EQ or bussed for plate, delay etc. hth AMD Athlon 2400+, 3GB, nVidia GeForce4 MX 440-8X, twin monitors, M-Audio 1010LT