 Hi there, welcome back to my YouTube channel. This is Daniel Rosel here. So I want to do another video demonstrating how to do something on OBS or today's OBS learning. Now, the differences between how to do something on OBS on Windows and OBS on Linux aren't generally night and day, but there are naturally some differences between different operating systems. And this is something I thought was actually really important. Or I think monitoring audio is very important whether you're using OBS to record or to do live streaming. So I wanted to just show these steps. And as I mentioned on a lot of these videos, I do also record these for my own reference to if I forget how to do something. So that's another reason for this. So let me just go and show you how to set up audio monitoring on Ubuntu OBS. Now, what I'm going to be doing is actually trying to get a two microphone, to monitor two microphones, right? So microphone one is the USB microphone that I'm wearing here on my shirt. And the second microphone would be, let's say, we have another guest here in my home studio. Now, if you're going to be in monitoring, then you're going to want some monitor headphones or just regular headphones, sort of have to be specifically studio headphones, but some interface that you don't want to monitor over that say, for example, the monitors in front of me here have HDMI speakers built into them. So that's typically what I actually use day to day, but I wouldn't want to put my monitor feed there because that would play back. So instead, I've got these studio headphones rigged up to the speakers and that's what I'm going to use so that there's no, the monitor feed is coming into my ears and that's not going to be picked up by the microphone that would create a reverb channel. So here's what I'm going to do. Firstly, let's go over to our OBS. This is a demo OBS, of course. Not the one that is in front of me. And you can see here, I have mic channel. This is the Lavalier microphone, right? So let me now go ahead and attach that exciting second lav mic that I mentioned. That is in the USB port. Now what I always recommend doing for OBS or this is what I found helpful as I'm learning this is to basically always make sure that you check your levels, not just in OBS, but you actually have a look in post audio. This is where the Linux specific stuff is kind of coming in here. So I just like to make sure that the levels are working. Firstly, the right devices are being assigned and everything is looking good just on that basis. So let me now go into post audio here and take a look at what we've got running. And what we have running is this photo so I can see. Now let's just check firstly. Yeah, the second test microphone. Hang on, I need to move myself. This always happens. I need to plan my spot on the screen before I do this. So this one at the bottom, AK5371, that's the test lav. This one above it, the Maono is the lav you're listening to on my lapel. And the other best practice in inverted commas that I always recommend is to mute any channels you don't use because it just gets confusing. Now something else you can do in post audio is once you've got your OBS running, you can actually see the OBS recording channels and the hardware devices associated with the channel. Now the reason you see four times the same channel, and I'm just gonna actually make sure here that I'm actually recording, yeah, it's the recording of the Maono. So this is a bit perplexing because the OBS I'm recording into right now says I'm recording on Maono. Nope, and it's actually recording onto the test one. So this is how finicky, this is how finicky, so I'm actually gonna manually override this here. Yeah, and now you're listening to the actual Maono, so you might have heard some kind of latency. If you wanted just an easy way to test with a lav mic, I always just tap it. You probably already come to the same conclusion. So this is now working, it's a good thing I went into check because we had some difficulties. So I'm gonna say mic aux should be this and I'm gonna just put that down but not away. So this mic aux channel here, I want that to be the lav mic actually, so I'm just gonna check if we have the same issue. Now this is potentially because I added it mid during the recording session and that can have this effect of creating problems. So my lav mic is the only audio source here. That says it's that Maono analog stereo but yeah, you can see that's the test mic again. So I need to also fix this one. So this is kind of a good example of where OBS is not actually reading off the right info from the send card. So it's actually that is now this should be fixed. Now this should be, so now if I do my test, the levels are spiking in both my audio meter so they're actually getting from the USB. Now my next thing I want to do here is add the second mic and I'm doing all this before I even show how to, so I'm gonna go into this audio and for my mic auxiliary audio too, I want to associate this with the AK5371. This is the way that I now add secondary mics. I don't know if this is how you're always supposed to do it or it's acceptable to use the, to use the just direct add audio input source but I've had these troubles the other way and this ones work more reliably. So I'm just gonna do my tap test and you can see did you see the mic aux two level just like shooting all the way up. So that's working. So I have my two levels, my lav mic and my guest mic, let's call it here in OBS and now I need to just figure out a way to set up a monitoring feed for them. So now let me show you how to do that. I'm just gonna figure out somewhere to pop myself while that process is going on. I'm just gonna tuck myself away here in the far recesses of the top left of the screen. Okay, so now you wanna click on the audio properties channel and a little bit messy here but what you can see there's a background channel not using. There is lav mic that I'm also not using and mic aux and I want to add actually firstly a second, 70 millisecond latency on both those channels and this is my mic aux is my main lav mic and mic aux two is the test one, right? So I'm gonna put them both to monitor and output. Now you're getting feedback. Now the reason you heard that horrible squelching noise was because now if you do just monitor, monitor off is obviously there's gonna be no monitor. If you do monitor only, you're not actually going, you're gonna be hearing the monitor feed and not actually getting the microphone into OBS. So the one you're gonna want in virtually all instances is gonna be monitor and output and the same thing because I've configured my HDMI output as the fallback channel they start monitoring there and that was that weird sound. But what I can do now is, so now I've got them to the right source and just to show you exactly what happens here or what you just saw happening, when I set up monitoring, I now get this playback channel in and it's automatically created in plus audio is called OBS monitor and there's actually a separate channel for each monitor feed. So I can put them to the same channel and hear them together or I could actually output each monitor feed to a separate playback device. So now hopefully when I put on my monitor headphones because they're plugged into the computer and that's picking up on built-in audio analog stereo, hopefully now once I listen to this, I'll be able to hear the monitor feed from, hear myself speaking and to do that, I would firstly need to make sure that there we go. It's plugged in. Okay, so now it's great. I can hear myself, hear the monitor feed and I'm getting some kind of a loop back. Let's try muting the test microphone. So now I'm only getting one monitor feed and that's gotten rid of that loop. So there's a bit of latency in the second microphone and as I'm speaking, I'm listening to the monitor feed and that's working perfectly. So I can just put that away now. So that's it basically to set up a monitor in Ubuntu. It's not really any different from how you do it in OBS on different platforms. One thing to be aware of though is that if you just for diagnostic purposes, make sure that the microphones that OBS thinks it's recording are really associated with the correct hardware device and once you've set up a monitor feed in pulse audio, you will get a monitor playback channel for each monitor feed you've got running and then you can just toggle the output device, you can mute them, you can do everything you want with them and change the levels here. And if you have multiple microphones set up running in your OBS, you can choose to monitor all of them on the same device, let's say a pair of headphones or you can put each microphone on its own monitor. If you had a few guests in your studio, you wanted to give each guest a different pair of headphones for monitoring. You can do that here as well. You just need to play around a bit with pulse audio and everything can be done. Hope that video was useful. Thank you for watching. If you'd like to get more videos from me regarding everything to do with OBS Studio and Linux and technology, then feel free to subscribe to this YouTube channel.