I was just listening to bunch of scenes on the website MovieClips, and while watching this Raptor scene from Jurassic Park III I got curious as to how they got that sound whether they actually made the prop so it produces the sound or whether it was designed, any ideas? If you had to do something similar how did/would you approach it?.
If its flute related, I had a bit of experience when working on The Warriors Way of needing the sound of the last air exiting a neck wound after someone was killed by a Samurai - the script referred to it as a 'sad flute' I experimented with a lot of ideas but got the best results by hiring a local guy who is a genius with all sorts of wind instruments. He has a massive collection from many different culture but also is very skilled at various playing techniques (overblowing to create harmonics etc) http://en.wikipedia.org/wiki/Overblowing
Myself and the director got him to try all sorts of musical & non-musical/atonal phrases that I then messed with.. For my use I also filled a few ocarina and bamboo flutes with water and yoghurt, and captured elements to simulate lungs filling with blood etc...
I'm pretty sure it'd just have been sound designed. I don't think there would be time and budget to spend on designing functioning props like that; it would essentially be like designing a musical instrument specifically for use in a couple of scenes!
The design of the sound would probably have involved the use of some flute sounds, the lower parts from blowing across something like a drainpipe.
Old Disney cartoons used a lot of purpose built machines for sound effects, but that is as far as I know very rare now.