What do you hear (research project)?

Question:

What do you hear (research project)?

Hello, I am conducting a research project. could you please participate by listening to the sound on this website

http://www.acoustics.org/press/152nd/sou...

what sound pattern did you hear? (ex. da daahh, or daahh da)

Thank you very much

Best Answer - Chosen by Asker:

'twas a twirling, ambience - dudududuh
addition: what is the reasearch about