Physical input stuck to mono (right input only)

#1

I bought a board a while ago from somebody else and I just noticed that the input is only read from the physical right audio input, which then shows up as both left and right input in the editor..
The left input does nothing..
Is there some mod somewhere, that has been used by the previous user, that changes how the axoloti receives inputs??

#2

Just a stab in the dark - could this be to do with it being set up as a balanced input? I think one of the inconfig objects has a balanced option.

#3

And keep in mind that such settings will persist even on patch change sometimes, so be sure to set or unset them actively in your patch

#4

ah ok, there was actually a module left that I never noticed before.. haha
but... I've tried every setting, but the left input just won't work, it just only copies the right physical input to both left and right in the patcher..

#5

I could still use the board as the first-in-line-of-several and connect a microphone or something to record some new sounds in mono, but it's weird that it's doing this... Hope it doesn't give up some day as things might get hot from some short-circuit if that's the problem..

#6

Do you have a multimeter?

#7

yes, but I don't think it's a hardware problem. If it would be the case that the left input just isn't working, the left input in the patcher should show no input instead of showing the right input, right?

And I just checked it using the two seperate mono input modules (left and right mono), which work correctly...
So the left audio input dóes work, but somehow just doesn't show up in the stereo input module....even while it's set to stereo with the config module...whaaaat?? :face_with_raised_eyebrow: :thinking:

#8

seriously, this makes no sense at all....
I got all 3 input modules in the same patch, 2 mono and 1 stereo. They're all reading the same buffers called
"AudioInputLeft[j]" and "AudioInputRight[j]", but while in the same patch, the mono input doés receive the left input, the stereo input only receives the right one... So while they're reading the same buffers, they're getting different results?!?!?!

ps. it's even weirder then I thought...it's not the board itself.. I just tried it out with another board and it's doing the same thing wrong... Changed cable, same problem. Changed the output board, same problem. Changed the input board, same problem..

#9

wait...whut...what?? I changed nothing except connecting two different oscillators to the left and right outputs instead of using a single one connected just to either left ór right.. and it suddenly switched back to two working seperate inputs..

So changing the setup in the board that's sending the audio, changed the response of the board that receives the audio....
And it's not the audio-sending module that was the problem, I already cóuld receive both left and right on my audio-card.
I seriously don't get what was going wrong...
The problem insisted on several different boards and was definitely at the side of the audio-receiving end, but to change it, I needed to connect a saw and square to the left&right outputs of the sending module...?!?!?!??!?!!?!
This doesn't make any sense at all! :exploding_head:

#10

at this point i think it is some magic from johannes, that if no source is connected (i.e. the input is mono) the stereo input automagically switches to mono (in the sense of both stereo channels receive the same signal) from a user perspective this would make sense, since it can be hard to know which input is which on a stereo cable...

#11

no, it's not that... now I can connect a single source again and it shows up at the right inputs... so sómething has changed in how it responds to the inputs.. but what?!?
As it was doing the same thing in different boards, even when starting a fresh new patch multiple times, it has to be something at the patcher-software-settings side that has suddenly changed..

I seriously don't understand what could have changed.. it would be pretty weird if I have made the same mistake for several weeks and now suddenly do something different and right while thinking I'm doing the same thing..

#12

Don't know man...really weird.

Only other thing I can think of would be a bad/half broken cable between your axoloties (if I read your posts correctly, you were testing across boards, right?) that is now in a functional state again.

#13

I tried different cables as a first.. And the moment it suddenly worked again, I didn't switch any cable, so that's not it.
It happened both on the sending as well as the receiving part (checked that out just before it sorted itself out again), as I changed between multiple boards for both sending and receiving. At first I thought it was just this new board I bought, but at the end I found out that suddenly, all my boards acted this way..