Path: utzoo!utgpu!watmath!watcgl!ksbooth
From: ksbooth@watcgl.waterloo.edu (Kelly Booth)
Newsgroups: comp.graphics
Subject: Re: More Sound Tracing
Message-ID: <7558@watcgl.waterloo.edu>
Date: 5 Jan 89 15:40:49 GMT
References: <3458@uoregon.uoregon.edu>
Reply-To: ksbooth@watcgl.waterloo.edu (Kelly Booth)
Organization: U. of Waterloo, Ontario
Lines: 20

In article <3458@uoregon.uoregon.edu> markv@drizzle.UUCP (Mark VandeWettering) writes:
>
>		1.	how to handle diffraction and interference?
>		2.	how to handle "relativistic effects" (caused by
>			the relatively slow speed of sound)
>	
>	The common solution to 1 in computer graphics is to ignore it.

Hans P. Moravec,
"3D Graphics and Wave Theory"
Computer Graphics 15:3 (August, 1981) pp. 289-296.
(SIGGRAPH '81 Proceedings)

[Trivia Question:  Why does the index for the proceedings list this as
starting on page 269?]

Also, something akin to 2 has been tackled in some ray tracers where
dispersion is taken into account (this is caused by the refractive index
depending on the frequency, which is basically a differential speed of
light).