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Sample rate of class compliant bluetooth devices fail to be auto-recognized correctly in Windows 11

Anonymous
2022-12-27T14:15:36+00:00

Windows 11 has a well documented issue rwhereby the OS fails to recognizing the correct sample rate off some class compliant bluetooth earbuds and headphone devices (playback). There are multiple threads here, that are exploding all with the same issue and it is not certain that Microsoft has even acknowledging that this issue exists.

Devices are falsely recognized as 48 Khz sample rate, instead of 44.1. Hence, the bluetooth connection is established correctly, but the playback fails. In many instances, the only solution is to go hands-free, but this will set the sample rate to 12 khz (telephone quality).

Either Microsoft will acknowledge and fix the issue or Microsoft needs to tell us how to manually set the correct sample rate in the registry. This auto feature, whereby the OS will determine the sample rate is obviously not working as it should. It has been documented elsewhere in the forums, so I will not go into it.

PLEASE, give us a way to manually set the sample rate. There is no use of a drop down menu in "Settings > Sound" if the sample rate is not recognized correctly prior / in advance by Windows and the drop down menu therefore is not populates with the correct option of 44.1kHz.

Please don't post your standard troubleshooting tips for bluettooth devices.

Only post if you know how to set the sample rate manually IN THE REGISTRY or you are an MS engineer with knowledge of the issue !!!!!!!

Thank you.

Windows for home | Windows 11 | Devices and drivers

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  1. Anonymous
    2022-12-29T08:35:06+00:00

    Hi WalterHildebrand，

    Welcome to Microsoft Community.

    The problem may have something to do with the Bluetooth protocol.

    I recommend visiting the official website of your Bluetooth headset manufacturer to see what Bluetooth protocols it supports.

    Here I will give you a step to enable the ApTX protocol through the registry. You can try to modify the registry to see if "hands-free mode" reappears.

    Steps:

    1. Right click on the desktop and select New - Notepad Document
    2. Copy and paste the following: 
       Windows Registry Editor Version 5.00

 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BthA2dp\Parameters]

 "BluetoothAacEnable"=dword:00000000
    3. Set the document save file type to "All files" and name it AtpTX.reg.

    Then double-click on the reg file to import the registry key and restart your computer to see if the Bluetooth headset works with hands-free.

    Disclaimer: Generally, modifying registry subkeys or work group is intended for advanced users, administrators, and IT Professionals. It can help fix some problems, however, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For further protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, clickhere to view the article.

    If there is anything not clear, please do not hesitate to let me know.

    Best Regards,

    Manson - MSFT | Microsoft Community Support Specialist

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