As free, open-source software, you are responsible to RTFM. I'd recommend starting with these
OBS Audio related articles as a primer
I need help with obs. I don't want to hear myself talking on the mic.
then leave Monitor Off (ie, Output Only) of that Audio Source
yet if i don't use the output option, other program will not hear my voice to broadcast it.
of course
I use butt radio to broadcast my station. can that be fixed? can i send my voice to butt radio via obs with output my mic without monitoring the mic? i don't see the reason why i need to monitor my mic. Please help with outputing the mic so other program can hear it without monitoring so there is no feedback.
My use case, is such that having OBS General Audio - Desktop Audio enabled is pointless and in the way. My Scene Sources include ONLY those specific Audio sources I desire. For you? it depends.
Also, OBS Studio, for good reason, tends to lock Sources to itself. So, not sure if language translation, or ??, but you need to think clearly and logically about Audio path. And then it all gets somewhat easier.
Per my reply on your other thread, you can't have mic on, with speakers also on, when both the mic and speakers contain audio intended for OBS Output. because you then create an audio loop (echo/feedback, in this case a user induced error)
Monitoring a Mic is NOT on by default i nOBS Studio (I don't think). So couple of thoughts come to mind 1. you changed settings (Advanced Audio properties) in OBS Studio to something that doesn't work for your setup, or 2. The mic is being captured by your hardware driver or Operating System settings, output to Desktop Audio, which you are listening to via speakers. If the later, you have to fix that... nothing in OBS Studio will overcome the issue (except maybe not using Desktop Audio as I mentioned), as problem exists before OBS Studio even gets the audio signal. How exactly to do that? depends on your specific hardware, drivers, operating system settings, etc.