Hey, I have some success to report !!!! > I record regularly (and play back) using JACKD, Audacity and a UCA202. I'm > using Debian Sid WITHOUT PULSEAUDIO or an RT kernel. > > I use QJackCTL to start JACK with these settings: > Server prefix: "/usr/bin/jackd -S --realtime > Realtime box: checked > Priority: DEFAULT > Frames/period: 1024 > Sample Rate: 48000 > Periods/buffer: 3 > Dither: None > Audio: Duplex > Input device: hw:1 > Output device: hw:1 > Channels I/O: 2 (for both) > Latency I/O: Default (for both) Okay, this is a start. I tried it and it sort of works. Problem is that on playback I get motorboat sound. Not what we want. I also get a bunch of dbus errors while jack is trying to start. So, decided to give it one last try :) I have pulse running, etc. From a command line: pasuspender -- jackd -d alsa -d hw:1 jackdmp 1.9.8 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2011 Grame. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK server starting in realtime mode with priority 10 Cannot lock down 82241434 byte memory area (Cannot allocate memory) control device hw:1 control device hw:1 audio_reservation_init Acquire audio card Audio1 creating alsa driver ... hw:1|hw:1|1024|2|48000|0|0|nomon|swmeter|-|32bit control device hw:1 configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods ALSA: final selected sample format for capture: 16bit little-endian ALSA: use 2 periods for capture ALSA: final selected sample format for playback: 16bit little-endian ALSA: use 2 periods for playback Start up audacity ... and it works! Using audacity setting Overdub On I get the background playing out of the usb headphone jack. And recording seems to be fine. Just spoke some <this is a test> stuff into the mic, but that seems to work. I'll try my sax later. I have no idea why the qjackctl is barfing. Versions? > Settings in Audacity: > Set your project rate to 48000Hz. Does this make a difference? I have jack running now at 48000 and audacity at 44100 and it sounds fine. So, some progress on a cold winter's day. Wonderful. -- **** Listen to my CD at http://www.mellowood.ca/music/cedars **** Bob van der Poel ** Wynndel, British Columbia, CANADA ** EMAIL: bob@xxxxxxxxxxxx WWW: http://www.mellowood.ca _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
