Microphone not working
If your mask is recognized ("METADOX Mask") by your device, but the microphone is not sending any signal, we have found the most possible cause:
Windows USB audio stream bug
In this case, the mask is working in other devices (for example Android/iPhone), and the sidetone is also working (own voice from microphone heard through headphones).
However, there is a bug with some issues with the audio stream with Windows, causing the device to be suspended or muted. For most Windows and drivers versions, this is not a problem, but for some, it causes the microphone to not be heard. Like muted in the background.
Solution: Firmware Update
The issue has been solved in the firmware version 1.5 (Fixed PC microphone connectivity issues and device reboots related to Windows USB power management)
Workaround without firmware update
Although the firmware update is recommended, there is a workaround without it, setting up the following:
Go to Control panel -> Power options -> Edit plan settings -> Change advanced power settings -> USB settings -> USB selective suspend setting: Disabled
Another workaround that has worked for one customer is using a USB hub extender. We don't understand exactly why, but the USB hub seems to stop the issue, kind of stopping some problematic communication to arrive to the PC.
Still not working
This has been the only repeated issue. If your microphone is still not working or have different microphone problems, or not related to Windows, please contact us directly to analyze the case.