High Noon (1952)

As with Johnny Guitar, the audio track on the new Olive Signature blu-ray is from the same A/D transfer as the track on the old Olive blu-ray.

Differences:

The new track has just a tiny bit more emphasis put on its high frequencies. This is very negligible.

The low frequencies, however, have been attenuated. But the old track is extremely bassy at times, so this adjustment isn't a bad thing, and the intermittent low-frequency warble that is audible throughout the old track is now gone. This sound is very faint on the old track, and probably can't be picked up by most speakers anyway, but its removal is a definite improvement.