linuxaudio.org

Hey, I have some success to report !!!!
> I record regularly (and play back) using JACKD, Audacity and a UCA202. I'm

quoted text
> 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  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:

quoted text
> 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@mellowood.ca

WWW:   http://www.mellowood.ca

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