Are there experts that can hear better than the average person? Experts testifying about how the audio was cleaned up is one thing, but experts interpreting what they hear is highly subjective, I would think.
The jury should be allowed to listen and decide for themselves what they hear. This is how they handled it in the recent
Charlie Adelson trial with a hard-to-hear audio recording, although the two sides did also mutually agree on a transcript for the jurors to see. Maybe they could to that here.
As always, JMO.