That would be quite a feat without updating the quality of the voice transmissions. When you listen to some recordings of ATC, it becomes clear pretty quickly that context clues is paramount to being able to communicate with ATC. Some of the transmissions are so difficult to hear it amazes me that humans can even communicate through it.
Perhaps a lot of that is cabin noise, and without it, the transmissions would become a lot clearer.
For what it’s worth the radio transmissions sound quite a bit more clear (usually) in the plane. LiveATC uses ground stations which don’t always have great reception and they compress the audio like crazy. I can barely make out what they say on LiveATC sometimes but in the air it’s rarely a problem.
Perhaps a lot of that is cabin noise, and without it, the transmissions would become a lot clearer.