IAN-W, excellent post. It fits well with the aerodynamic noise.
Alcorfr, very sad and totally believable. With warnings all over the place and funky airspeed indications, you grab for cues wherever you can, but your interpretation of what you are perceiving, although intuitive, can be very incorrect.
The source of noise is probably the air rushing by the fuselage itself and becoming turbulent around the crown of the aircraft.
But that does not explain, the initial nose up leading to a stall.