randomly mute the bluetooth mic on hedset

Hi there,


I use Sennheiser PXC 550-II, after updating OSX to version 12.0.1 on the MacBook Pro 2019 16" i9,

mic randomly get mute in the middle of a call and I can able unmute it, I try with the slack app and google meet browser,


how can I fix it? it looks like related to the nice feature to improve Bluetooth accessories.



Regards


Posted on Nov 16, 2021 7:31 AM

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Question marked as Top-ranking reply

Posted on Jan 6, 2022 3:29 AM

I've been having this problem too (Trekz Air and Aeropex) and I've figured out my problem. Looks like if you reduce the mic input level setting to zero then the Mac tells the headphones to mute. I had my Zoom audio settings set to "Automatically adjust microphone volume" which causes it to reduce the mic input level to zero whenever it thinks you are not speaking, which triggers the headphone mute. I have disabled this option and now I don't get the constant muting. There is a similar setting in Microsoft Teams (Devices --> Automatically adjust mic sensitivity) which you also need to disable.

73 replies

Dec 8, 2021 10:57 AM in response to masoud_soroush

Thank you for reporting this. I can confirm this exact behavior with my pair of Sennheiser CX 6.00BT (bluetooth) earbuds. These worked fine for 5 years, until Monterey (v12.0.1).


Additional details:


  • In Google Meet, they will randomly go into Mute mode (continuous "boop, boop, boop" sound on this model)
  • I am NOT muted in Google Meet -- just the headphones have gone into mute mode
  • Only experienced in Google Meet so far (but have not tried with Slack, Zoom, etc)
  • Maybe mic related, because this has not happened automatically listening to other audio...


... however, I can reproduce the same behavior listening to regular audio. Putting the volume down near zero causes the headphones to start "boop,boop,boop" mute mode, then will power themselves off in a few seconds if the volume is not raised back up!


Detailed steps:


  • Start listening to audio
  • Use volume slider in Mac to lower volume to almost off (or all the way to zero)
  • Headphones start "boop, boop, boop" as if they've been instructed to mute
  • Raise the volume slider back up (there is lag)
  • If this happens "fast enough" the audio will resume as normal
  • Otherwise, the headphones power themselves off after a few seconds


I don't know why the headphones power themselves off after a few seconds of the volume being near zero. It's as if the Mac is instructing them to mute, then power off.


So, listening to audio is tolerable, as long as I don't lower the volume "too much", but meetings are impossible.


Any advice is most welcome, thanks.


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randomly mute the bluetooth mic on hedset

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