Why does the sound disappear in the Bluetooth headset on Windows when the microphone is turned on?

Question

Bluetooth

I have two different Bluetooth adapters for connecting to a USB port, these are respectively the well-known ASUS BT-400 with Bluetooth 4.0 support and now here is some Chinese NoName with Bluetooth 5.0 support

. There are also Bluetooth headsets with headphones and a microphone - SVEN AP -B450MV and JBL T450BT with Bluetooth 4.0 support

When I use these headsets on a smartphone, audio playback and recording work fine, including simultaneously in online conferences. And that's all, even if music from some online audio service or radio station plays in the background, it only starts to slow down due to simultaneous transmission in both directions with several sources, but it works. Naturally, the smartphone uses some kind of built-in Bluetooth adapter.

But in Windows 10 I have some kind of trouble with them.
The standard sound control panel in Windows shows that the same headset is detected as both a Stereo playback device (Headphones), and as a Hands-Free AG Audio playback device (Headphone), and as a Hands-Free AG Audio recording device (Headphone ).

If I turn on the playback of some stereo sound from any source, then Windows uses a stereo output device and this sound normally sounds through a Bluetooth headset in stereo mode. But if after that I open the sound control panel and switch to the "Record" tab in it, or simply launch some kind of sound recording application such as "Voice Recorder" and start recording sound in it, then for some reason the sound playback in the headphones dies , silence in the speakers. Accordingly, if I stop recording sound, then within a second, stereo sound playback in the headset's headphones resumes again. That is, this is clearly some kind of conflict that does not allow simultaneous playback and recording. The "sfc.exe /scannow" command does not find any problems, and all Windows services also work correctly.

When I used my previous wired headphones with a wired connection via a USB connector or regular headphones with a wired connection via the Mini-Jack connectors of the system unit, they worked perfectly both for playing and recording sound, including at the same time. But with Bluetooth headsets such a problem. Tested on all combinations of my USB Bluetooth adapters and my Bluetooth headsets on a licensed 64-bit Windows 10 Pro with all the latest updates.

I looked for advice on the forums and all advice boils down to either completely turning off the Stereo device and listening to sound only in Mono mode, or vice versa turn off these Hands-Free devices and listen to stereo sound without the possibility of sound recording.

But is it possible in Windows to listen to Stereo sound at the same time as recording voice through a microphone in Bluetooth headsets like on a smartphone? Is there really no such possibility?

Answer 1

I think it's about the profiles that your headphones support.
A little more detail below:
What is a Bluetooth profile?
When a connection is established between two Bluetooth devices, they receive information about the protocols of the paired device. Only devices operating on the same protocols can exchange data, just like people must know the same language in order to fully communicate.
While Bluetooth establishes a wireless connection between devices, a Bluetooth profile defines the commands and functionality that these devices can exchange using Bluetooth technology.
The Bluetooth profiles HSP (Handset Profile) and HFP (Hands free Profile) are the profiles required for normal Bluetooth mono headset operation, A2DP and AVRCP are used for stereo headsets.
What profiles are required for Bluetooth headsets?
HSP (Handset Profile) - provides the basic functionality necessary for the interaction of the handset (mobile phone) and headset.
HFP (Hands free Profile) - enhanced functionality compared to HSP, used to control a mobile phone from a station in a hands free car unit.
A2DP (Advanced Audio Distribution Profile) - Provides the transmission of stereo audio signals. (the quality is much better than the mono encoding used for HSP and HFP).
AVRCP(Audio / Video Remote Control Profile) - used to send commands (eg fast forward, pause, play) from the control unit (eg stereo headset) to the desired device (eg PC to Media Player).
NOTE Bluetooth profiles only work if they are supported by the devices (mobile phone/MP3). See your device's user manual for details.
Source

Answer 2

It is possible that when the HSP profile is activated, the A2DP profile is disabled.
To have sound in the headphones, you need to try switching the sound output device. You may have to restart the program that outputs sound and select a different audio output in Windows.

Answer 3

The same problem, threw off the picchu to make it invisible what is happening. There is only an idea to change the software, initially the adapter comes with CRS Bluetooth, but it is not clear whether other software will work with it.

Answer 4

Karoch.
After months of searching, I went out and bought a separate wired microphone.
It's just a stupid lavalier microphone, I connect it when necessary to the mini-jack connector, and attach it to my collar.
And in the headphones, I turn off the microphone through the sound settings.
It turns out that I have separate headphones with stereo sound without a microphone, and a separate microphone.
That's how it works.
Not convenient, of course. Well, here is such insanity.
Note to the authors of the Bluetooth protocol! Stop fucking doing it, make a normal protocol for stereo sound on input and output, well, yo-my.

Answer 5

I'm asking exactly the same question...

Answer 6

I have the same problem! Help her solve it! Ears for 14k do not work humanly.