This is a small fragment of a human whistling in a special way, with tongue touching the top front teeth (leaving opening for air to flow), producing a sound that resembles a panflute.
This is the sound of an actor, alone on stage, exhaling at the end of her performance before taking the applause in a small, half-full theatre. The audio was then slowed down.
(simulated with wet bread. . . ) with small ( toilet ) ambiance and fan in background. (octava mk012 cardioid, sqn 4s, fostex fr2le 48khz 24 bit, mono).
I'm a student studying sound and i and recording sounds this is one of the recordings. This sound was created with real dry bunny food shuffling around with in a small container.