IR microphone

Hi,
I in the process of researching an design for an infrared ( IR ) wireless mircrophone and a receiver. I found some designs but none of them are too good. Does anyone know how to implement the transmitter with a 555 frequency modulation?
Thank you,
Albert

Re

check this website out and I will bet you'll find something good

also I have seen a couple of wireless mic's on this website

https://www.commlinx.com.au/schematics.htm