Interpret Footage changes audio pitch

[MaxAppian]

MacOS Big Sur 11.2.3
Premier Version 15.1.0

3.2 GHz 16-Core Intel Xeon W

MD Radeon Pro W5700X 16 GB

Source footage MP4 30fps

No errors

Hello all,

Trying to modify > interpret my footage to 23.976 from 30 and doing so lowers the audio pitch.  Am I crazy or did this not used to happen?