Pablo wrote:I think that it makes more sense for your use case if you use jack with the USB card (capture-only mode seems more adequate if the audio outputs are not in use) and the pulseaudio jack sink for the SB and I will try to explain the reason why.
I assume that the SB live has an internal mixer which alsa can access to, via alsamixer. It could even have more than one internal device in which case things would be more involved. In contrast, the USB card is simpler; it only has a duplex device so it is easy to get it up and running via jack.
The fact is that jack doesn't allow to touch the internal mixer whereas pulseadio does. So it is easy via pavucontrol or general sound configuration to make it work, rather than looking into internal devices and alsamixer, which is what jack understands.
this is exactly what I'm trying to do, and so far not succeeding, no audio is played back in audacity. pulseaudio-jack is installed, and once I start jack2dus and go into qjackctl/connections, I can see the following:
Code: Select all
Readable Clients / Output Ports:
Pulseaudio JACK Sink
Writeable Clients / Input Ports
PulseAudio JACK Source
There is a connections from capture_1 and _2 to front-left / -right.
Audio on my system works this way.
When I go to record from Audacity, I set up the following:
JACKAudio Connection Kit
mic: System (only way I can record)
playback: PulseAudio Jack Source (only option I have)
There is no audio when playing back the recorded track. I check the qjackctl connection window and I see Portaudio readable client make a connection to PulseAudio writable client., yet no sound.
I load pavucontrol thinking I would have to switch the playback to Pulse, but when playing back the recorded track, nothing is displayed in the Playback tab of pavucontrol.
I'm not sure how to get it to playback through pulse?
I even put the following in the execute script after startup:
Code: Select all
zita-j2a -d hw:SB -c 6 -r 48000 &
which should have added a zita-bridge, but I don't see it in connections.
I know I'm doing some trivial thing incorrectly.
any help is appreciated.