On 08/02/2014 10:55 AM, Ivan K wrote:
Thanks to everyone whom responded.
Len Ovens <len@xxxxxxxxxxxxx> writes:
Audacity uses the portaudio library to connect to Jackd.. so in the
qjackctl connections window and the audio tab you should see PortAudio on
the right side.
and
"David Jones" <gnome@xxxxxxxxxxxxx> writes:
My experience with recording via Audacity using JACK is that the
PortAudio connection only appears in JACK while Audacity is actually
using it (playing or recording). So I guess you start recording in
Audacity, pause it, tweak the connections in JACK, then continue recording.
Well, no matter if Audacity is recording or playing,
all I see in qjackctl, [Connect], "Audio" tab is:
== == Readable Clients/
== == Output Ports
== == - system
== == capture_1
== == capture_2
on the right, and then on the left, I see:
== == Writable Clients/
== == Input Ports
== == - system
== == playback_1
== == playback_2
== == playback_3
== == playback_4
== == playback_5
== == playback_6
== == playback_7
== == playback_8
I see don't see a mention of audacity or portaudio.
Hmmm, just on off-chance ... you do have Audacity set to use JACK?
Sorry, maybe not being very helpful here.
Also, does "system" refer to my M-Audio card or
the integrated audio on the motherboard?
I believe that JACK's "system" refers to the audio card you've set JACK
to use.
If system does refer to my M-Audio card, I don't
see anything in the under Readable Clients/Output Ports
that distinguishes between the s/pdif input and the
ADC input.
Didn't someone else in this thread already post about that? That SPDIF
was 7 & 8?
On the other hand, when I run mhWaveEdit, as suggested by
Mr. Ovens, I do see the word "mhwe" listed both in
the Readable Clients/Output Ports and Writable Clients/Input Ports.
A lot of audio programs are smarter about working with JACK than Audacity.
At this point, I can continue to work with mhWaveEdit
as audacity appears to be problematic.
----
So running mhWaveEdit, I still cannot create any audio
files with actual sound, or see mhWaveEdit's VU meters
show any volume.
So, does "system" in the connect window of qjackctl
refer to my M-Audio card?
Thank you for your suggestions!
Sorry, I've run out of clues. On my simple setup here, I started JACK,
started Audacity, set Audacity to use JACK (it defaults to ALSA on my
laptop); hit pause, then record, then unpaused. A PortAudio connection
appeared in JACK's writable ports window. It was already connected to my
in ports. I paused recording in Audacity and checked JACK; connection
still there. When I hit Stop button in Audacity, the PortAudio
connection disappeared from JACK.
I have jackdmp (JACK2) 1.9.10, Audacity 2.0.5.
--
David W. Jones
gnome@xxxxxxxxxxxxx
authenticity, honesty, community
http://dancingtreefrog.com
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