Hybrid meeting with interpretation

Hello everybody,

I need your help with this scenario please:

I have an Hybrid meeting with interpretation between two languages. The interpreter is not in the floor but online.

i want to make each participant in the floor able to listen to the language he selects.

I used two PCs in the floor , each of them  listens to a different language and connect each of them to a transmitter that broadcast the selected language on a different channel to a receiver on that channel. each participant in the floor connects his headset to his own receiver and listens to the language of that channel.

the problem now is that when a participant in the floor speaks he hears himself from his headset that is connected to his receiver.

could you please advice a way to prevent speaker from hearing himself or suggest other other solution to accomplish that.

Thanks in advance.