I found this clip regarding the Secondary Air Injection System noise:
https://www.youtube.com/watch?v=Q3Zoc2eqxqo
I will concentrate on analyzing that SAIS system, as the WHOO noise does happen more on cold engine when it is cold and damp outside, and eventually does go away after some driving.
Maybe the WHOO noise is OK and is creating a little harmonic noise when the SAIS pump is on until things warm up.
I don't have a Check Engine light on, so no failure codes at this time - yet ...