How do they ensure that during a remote TV interview you can’t hear the interviewer speak through the speakers of the interviewed one?

Question

Even when they talk over each other, we still only hear the interviewer and the guest talk. We don’t hear the speakers. (As argument against noise cancelling)

I know they could wear something like airpods, but I didn’t see anything in their ears so how is it possible without?

For example look up the Piers Morgan interview with Kanye West, thats an example of what I’m curious about.

In: Technology

Answer 1

There’s a few ways. First, appropriate microphones that are directional. Meaning they only pick up sounds within the “cone” the mic is pointed. The audio operator can also throw a “gate” on that audio channel. The speaker has to be at a certain volume before the microphone will “let it through the gate”.