Very old cinema surround sound test noise

[Monkzie]

Does anyone know where I can find an example of the old surround sound test noises that they used to play in cinemas about 5-7 years ago before the movie actually began? One test was of a helicopter flying through a metropolis scene. Another, (the one I'm looking for) is best described as a digital sound that lasts for about 8 seconds and starts off as a real dissonance, kind of like a static sound, and it slowly but surely changes and morphs into a harmonious sound. A weird description I know, but I can't find it anywhere!

[dabees]

Do you mean the LucasArts THX sound check by any chance?

https://www.youtube.com/watch?v=SdQT_9NCJuY

[dabees]

* LucasFilm

[ZXR]

Dolby Digital ?

https://www.youtube.com/watch?v=hAu_2r77-Rg&fea ture=PlayList&p=336457E9638CC41C&playnext=1&pl aynext_from=PL&index=8

[Monkzie]

Oh my God, it was the THX LucasFilm sound that I was looking for! Thank you so much! I know its sad, but I've listened to it about 20 times now!

[whiskeryron]

Thanks I love it, have dowloaded it to my 'phone.Ron.