[SOLVED] jack ardour scarlett 2i2 feedback

[nixit]

Good afternoon all,

I am a voiceover artist and have been using audacity. My VO mentors suggest using a DAW, so I recently installed Jack2 and ardour.

I've gone through many sites on setting up jack, ardour and even audacity, and results vary.

I have my mic in my booth with my scarlett 2i2, so I would like to set that up with jack as input. I would then like my Audigy card on my desktop to be output, since that's what I will be using when I edit the audio. I also set this up in jack (using Cadence and qtjackctl).

However, when I load up Ardour and add a track, I all of a sudden get feedback through my speakers. The feedback goes away when I record or play, but not just sitting there.

Do I have something set up incorrectly? is it possible to have jack use 1 audio device (scarlett 2i2) as input and 1 audio device (audigy) as output?

I would also like to get audacity to use jack, and have also had mixed results, which I'll post in a different thread.

I do appreciate all the help, and let me know what specific information you may need from my setup.

cheers,

--nixIT

[rghvdberg]

http://jackaudio.org/faq/multiple_devices.html

The feedback might/must be a routing thing. Hard to tell without looking at the actual session.

When recording with a microphone you'll need headphones. I presume you use that.

[nixit]

Thanx, I believe it is a routing thing, and when I have it set up, I have qjackctl (and cadence) set up for line in to be my scarlett 2i2, and line out to be the audigy.

When I record, I do get the recording through the scarlett, and when playing back it is through my audigy, so I am guessing routing is correct. It's just when ardour is sitting idle, I am assuming ardour keeps line in and line out open (monitoring?) which is causing feedback. I'm not sure where to turn monitoring off in ardour to see if that's causing it.

When I plug headphones into my audigy I do not get the feedback when it's sitting idle.

question is, is there a way to eliminate the feedback without keeping the headphones plugged into the audigy? I would hate to keep stopping and starting jack, which will then require a relaunch of ardour to change input and outputs withing qjackctl.

I'm fairly new to this, and am trying to learn all I can.

Thanx for the URL, I've read that page a half dozen times and I'm still trying to understand everything on it.

--nixIT

[finotti]

This is a bit off-topic, but I had a lot of trouble configuring my 2i2 as input and my sound card (Xonar) as output. I had a lot of xruns when recording. I'd recommend you use the 2i2 for output also. I don't understand what you mean

I would then like my Audigy card on my desktop to be output, since that's what I will be using when I edit the audio.

I have my 2i2 as the only "sound card". It works just fine, and most likely with much better AD/DA converters...

As for the feedback: what does Edit -> Preferences -> Audio -> Record Monitoring Handled By say?

Also, a screenshot of Candence my help debug.

[nixit]

I found it under Signal Flow.

It is currently set to Ardour. Should it be set to audio hardware?

--nixIT

[finotti]

OK, reading your post more carefully:

It's just when ardour is sitting idle, I am assuming ardour keeps line in and line out open (monitoring?) which is causing feedback. I'm not sure where to turn monitoring off in ardour to see if that's causing it.

On the voice track in the mixer window there are "IN" and "DISK" buttons (besides the record button). Click on DISK. (It should become solid orange.) This tells Ardour to only play what is on disk (recorded) for this track, so, basically, monitoring is off. (When IN is solid orange, it always plays what is coming from the mic. When its orange on the border, the default, it plays the recorded version on play, and the mic when stopped or recording, if I am not mistaken.)

And I would leave the monitoring set to Ardour.

I hope this helps.

[nixit]

Thanx, I will give this a shot.

Appreciate your help!

-nixIT

[nixit]

w00t! That does help, THANX! finally, no more feedback through my speakers. Now I just need to remember to make sure disk is selected.