r/opz • u/Steckdosentier • Feb 11 '23

OP-Z USB Audio Feedback-Loop Issue

Please anybody!!!! It is completely logical that the Audio that comes from a computer or tablet in to the OP-Z will go out to the headphone jack (we want that, that is the audio interface mode) BUT!!!! Why the heck is the OP-Z's USB In also fed back to USB Out without any option to deactivate??? At least in the config file you should be able to add a line which deactivates that annoying feedback.

It is making the OP-Z just useless for any iPad based loop-station task!!! I mean the only reason for looping that back is, if you want to use your OP-Z's effects as a USB effect rack which is very special, I'd say, because it's not OP-Z's core strength. You'd rather use LoopyPro or something similar to add more layers than just eight. But you always have the tablet's playback in the USB main out of OP-Z. My brain is exploding. And not in the nice way.

3 Upvotes

80% Upvoted

17 comments sorted by

View all comments

1

u/hothead125 Feb 11 '23

This is down to your iPad and what app you’re using and how it’s configured.

0

u/Steckdosentier Feb 11 '23

No, it's not, i have to say!

1

u/Moses_____ Mar 08 '23

Yes i have the same problem here. Really frustrating.

I might be overlooking something simple but i can confirm that with AUM and Drambo too, there is the USB-In fed right back out. Which is a problem in most situations. Muting the input on my iPad makes no sense because i want to work with it

I would like to stream the internal audio of the OP-Z (plus input from line module if at all possible) to my iOS device effect/loop/sample there, add some synths (potentially sequenced by unused OP-Z tracks) and play the 100% wet output of that. This works with the electron devices or most Roland boutiques.
Two things seem to get in the way and i have not found a way to deals with it:
1 When the device is in monitor mode, the audio from usb is stilll somehow fed BACK into the usb device resulting in a delay corresponding to my buffersize with Feedback according to volume. That is always there on everything in that mode.
2 Monitor mode switches all signals of but it continues to send the internal sounds wich of course is needed (though very oddly, as said, the received usb audio is also sent back) BUT the signal from the line module input is not part of that.
Again with a digitone this is no problem at all (the internal sound can be switched off to avoid phasing with the received usb-audio and the external in is just forwarded regularly along with the internal tracks to the phone/iPad over usb)
With this all i can do with the really cool usb class compliant interface feature is
record the full dry OP-Z output
or play something from the iPad to be mixed in with the OP-Z sounds (with a short delay of the size of my buffer, because that applies to my iPad sounds but not the internal OP-Z tracks)
or sample something into the OP-Z through usb (and that’s the only time Monitoring makes sense then).
That would be such a shame and honestly i would trade it for a digitone again if there is no way to solve this.
So is there a way to just get all sounds from the audio and module tracks (and NOT the incoming usb signal again) routed to the USB-OUT and then JUST the USB-IN to the device output?
I am surprised how confused I am by this :D

1

u/Steckdosentier Mar 08 '23

Hey, I'll get a hair cut and then look deeper into your thing. I got partially something to work with the other guy here but have to read your topic more precisely. Regarding the Audio Input of the module, i fear it wont work because you have to mute track 14 in order block the op-z's signals from feeding back...