Noise and echo issue

[rikapsu2018]

I tried to compile and test on my phone.
But there is big noise and echo when I speak via bluetooth microphone.
How can remove this issue?

[lindev0915]

This is good source.
I faced same issue.

[kylecombes]

Hi @rikapsu2018 and @jinguangze. Thank you for your comments. The app is admittedly quite imperfect, in part due to inherent limitations with Bluetooth (a delay of ~300ms is unavoidable) and as well as significant variation in the audio signals coming from Bluetooth microphones (we've been unable to get Apple AirPods to work decently).

It's hard to say exactly what the source of your issue is, but if you have an echo, I would recommend trying to block sound coming from the speaker from reaching the mic. This could be through a combination of physical distancing, placing something between the mic and the speaker (e.g. a mask or your hand), or something else to keep the mic from picking up what comes out of the speaker.

Let me know if this helps at all, of if there's anything else I can do that might be helpful.