IR AUDIO TRANSMITTER

so as you can see we send music to the receiver but there is no cable connection and if I put my hand in between the music stops so how we do this while using infrared light from this infrared LED and on the other side we have a photo transistor the reason I'm showing you this is because as you remember from last week we have seen how a Tesla coil works and also how it could play sounds so I'm working on a bigger Tesla coil now that will also have sound control but to remove noise and also separate the high voltage from the low voltage sounds and signals from probably a microcontroller I need to send the signals using light instead of electricity today I will show you a simple circuit that I found that will help us to send the data using infrared light we will see how to use a photo transistor and detecting Freret light the maximum frequency we could get with this circuit see if we can