LinuxQuestions.org
Latest LQ Deal: Linux Power User Bundle
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices


Reply
  Search this Thread
Old 08-31-2005, 11:55 PM   #1
johnson_steve
Senior Member
 
Registered: Apr 2005
Location: BrewCity, USA (Milwaukee, WI)
Distribution: Xubuntu 9.10, Gentoo 2.6.27 (AMD64), Darwin 9.0.0 (arm)
Posts: 1,152

Rep: Reputation: 46
Can I make jack use 24 bit mode


So I just got a M-Audio Delta 1010LT and everything I read say's the cards max quality is 24bit/96khz. I've got it set up but jack starts in 32bit/96khz mode. it still works just fine but wouldn't this waste disk space if my card doesn't do 32bit mode. is there any way to make jack start in 24bit/96khz?
 
Old 09-01-2005, 12:23 AM   #2
foo_bar_foo
Senior Member
 
Registered: Jun 2004
Posts: 2,553

Rep: Reputation: 52
this is what the jack docs say
The default settings for jack are to run at 48000hz with a buffersize of 1024 frames per second and a period size of 2. Jack currently supports two bitrates. Jack's alsa driver/client tries to use SND_PCM_FMT_S32_LE, which is the format used by all current 24 bit audio cards except for some USB interfaces that actually use 24 bits rather than 24-packed-in-32-bits. If the device can't do that, it tries for SND_PCM_FMT_S16_LE, which every audio interface should/does support. True 24 bit format wouldn't be a lot of work to support, but its not trivial either.
 
Old 09-02-2005, 12:37 PM   #3
johnson_steve
Senior Member
 
Registered: Apr 2005
Location: BrewCity, USA (Milwaukee, WI)
Distribution: Xubuntu 9.10, Gentoo 2.6.27 (AMD64), Darwin 9.0.0 (arm)
Posts: 1,152

Original Poster
Rep: Reputation: 46
So jacks 32bit mode is "24-packed-in-32-bits" ? and I'm not wasting 8bits per sample?
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
JACK audio in realtime mode ... not working :o( dreamtheater Mandriva 4 12-10-2005 05:02 AM
AMD64 run 32 bit mode javierj Linux - Newbie 1 04-14-2005 09:00 PM
xserver in 8 bit mode?? Henry_1 Linux - General 1 09-11-2003 08:22 PM
32 bit or 16 bit mode in XF86Config-4 uglydot Linux - Hardware 4 06-25-2003 02:07 PM
Displaying 8-bit images in 24-bit mode and vice versa yrraja Linux - General 4 04-29-2003 11:54 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Software

All times are GMT -5. The time now is 09:49 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration