Hi I have a question

#1

I have a question about voice processing.
I have constructed a voice amplification system (microphone - codec - earphones).
The voices from television or radio are clear.
But when I talk to a friend, my friend and my voice are not clean.
I don’t know why.
Please, what is the reason?

Thank you.

#2

It’s hard to troubleshoot your problem without knowing more about the setup.
What specific hardware are you using?
What is the physical setup?
What is the code? Please provide a link.

#3

I have a link with hearing aid supplies maybe it’s gonna be useful for you