Should we disable "timestretching" to hear correct audio pitch at Cinema 24.000fps?

[mkanet]

Generally, when digital (or analog) audio is sped up, so does the pitch; unless timestretching to digital audio is applied. I am guessing that encoded bluray movies are slowed down from 24.000fps to 23.976fps WITHOUT timestretching; giving a slightly lower pitch that the original audio. Hence, speeding it up by the same amount to the original speed should restore original audio pitch (by using reclock's Cinema 24.000fps mode).

All this time, I've been incorrectly enabling timestretching when changing/restoring Bluray speed to 24.000fps Cinema mode; thinking that bluray audio at 23.976 WAS at the correct pitch. It appear I was wrong. However, I want to be certain... that by disabling reclock's timestretching option will cause audio pitch to playback at it's original pitch as well (otherwise speed will be changed without changing pitch).

If this is all true, that means all bit-perfect people who try very hard to force their display card to play exactly at 23.976hz (without reclock cinema mode), they are basically listening to bitperfect audio at the wrong pitch

[Jong]

All true.

And the timestretching algorithm is, no fault of the author, ugly. There is simply no "good" way to do it. Even if the pitch was wrong @24hz it would still be far far better to listen at that very slightly incorrect pitch rather than let timestretching anywhere near it and in fact, as you correctly suggest, the pitch is right @24Hz, not 23.976Hz.