Greetings All, The idea of recording an IR in an unusual environment* is interesting. When I first read the original post, I wondered how closely a simulation would match a recorded response. Although I'm far from an expert on room acoustics, I have used simulation software (e.g. Sabine, Odeon, CATT-Acoustics, COMSOL, etc). In addition to the absorption coefficient of the metal, the sphere's radius, and the listener's position, one might also wish to add the speed of sound in argon. Pressure and temperature will affect speed of sound (and resulting wavelengths and Eigenmodes) in gas. Is the gaseous environment a mixture of oxygen, nitrogen, and argon that permits one to enter without problem? Would a balloon filled with air pop in the same manner as free space if the compressed air has no place to escape (i.e., you're adding to the net pressure of an enclosed volume, not a place where free expansion can take place). As usual, I'm writing off-the-cuff and my notions may be wrong, but a simulation of the acoustical environment could be interesting when compared to a live recording or IRs made with a Soundfield mic.
*There is a new experiment about to start at the Gran Sasso laboratory (Abruzzo region, central Italy) to detect dark matter (featured on BBC News24 today). The business end appears to be a metal sphere, loosely comparable to a bathroom in size, which will soon be filled with argon. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20130207/f5f173d2/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
