I just realized the assumptions underlying your question.
To clarify: Sound is sound. It remains unchanged. And modern scientists do describe it precisely.
But the ancient structure of how sound was structured and arranged into chords and scales has changed. This began after Ptolemy used his weighty reputation to argue against the 'irregular' format Pythagoras had propounded for conveying healing power from the Harmony/Music of the Spheres.
Ptolemy would have been a Ted conference hit!