Strangers on a Train (1951)

The analogue track on the 1987 Warner LaserDisc doesn't sound particularly good, but nor does the track on the Warner blu-ray. Both sound rolled-off and murky, but the blu-ray is (surprisingly) more distorted and has a midrange bump in its EQ. Dialogue on the LaserDisc is fuller and more natural. At the end of the day, the differences are minor.

I suspect the Japanese LaserDisc's digital track (NJL-11062) shares the same mastering as the analogue US disc, but this is obviously just a guess.

The R1 DVD is essentially the same as the blu-ray, though its high frequencies do extend further.

The audio track accompanying the pre-release cut on Warner's 2001 R2 DVD is considerably more detailed. It's a lot less distorted and it has less noise reduction. It is, however, a unique mix with subtly different background effects in several scenes, even those that use the same takes of dialogue that made the theatrical cut.