Microphone limited to very low volume after update to Sonoma.

I had this same issue with my 14 inch 2021 M1 chip. I was able to fix it by following this advice:

1. Go to Applications → Utilities → Terminal
2. Type in “sudo killall coreaudiod” and press Enter
3. This should reset your Core Audio daemon

Try resetting your macOS audio settings or performing a system reset. Apple is aware of this issue reported by other users and may address it in future updates. Keep an eye out for any software updates that may include a fix.

Same issue here with my 13" M1 MacBook Pro with Sonoma. The command helps, but since I have daily meetings I have to execute the same command every day. I'm using MS Teams app for the meetings and wonder if it has something to do with it or it's a general issue. I have another 13" MacBook Pro with Intel Processor upgraded to Sonoma and never experienced the low mic volume issue. I guess it will be beneficial if we list the apps we use the mic with and maybe we can find a common root of the problem? ¯\_(ツ)_/¯

It always happens to me after using Microsoft Teams, either the browser or desktop version. Mic and speaker volume are fine but then drop to ~20% during/after an MS Teams call. I've messed with the apple and MS setting to no avail. This terminal command is super helpful because my only other solution has been rebooting after every call.

I also posted in the Microsoft community, since it's clearly an issue (for me) of what MS is doing with permissions.

Sara you are a genius. This fixed it perfectly. I was having issues with Skype and no one could hear me. I just did a test call and it is louder than ever! Thank you!

For those who are trying it, the password is just the one you use for your computer, not your Apple pw.

Same problem with my brand new 14" macbook with M3 pro on Sonoma! It was first noticed on a Teams call. If I switched to my Apple headphones, all was well, but using the Macbook microphone had almost no audio input. I tried Sara's killall command and BINGO! Now I just hope I dont have to do this after every reboot!

Thank you, Sara!!

I tried your solution.

Terminal is Asking for Password

??

I don’t remember if I was asked that, but I would think it would just be the password you use to log on to your computer, access your keychain passwords, etc.

That command fixed my problem! Thanks for sharing man you just made my day!

I tried this on my Mini M2 with Sonoma 14.5 and it didn't help. Do I need to restart the computer?

I'm using the Voice Memo app to check recording.

have the same issue with mic

I see the request for password but cannot enter it

I've narrowed it down to Teams on my Mac, as well. Zoom, Skype, and Google Meet all work fine. But as soon as I use Teams my input and output volume drop to almost nothing.

"command not found" is what i get when trying this fix. oh well. it does seem to be the only solution on the internet that i can find.

saramrieille - Your solution worked! Thank you!!