See my MTB vinyl post for the origin of this, again a mono recording.
On side 2, listen to "And I Love Her", then listen to the cd version. The vinyl version is Paul's voice, mostly unadorned by any post processing. The cd version is well, different, like it had an echo effect done to it.
"It is quite possible that societies - much like individuals - collectively repress information, concepts, and ideas which would produce high anxiety levels if dealt with consciously."