From trantow@csd4.milw.wisc.edu Wed Jan  4 16:09:56 1989
Path: leah!csd4.milw.wisc.edu!news
From: news@csd4.milw.wisc.edu (Net news owner)
Newsgroups: comp.graphics
Subject: Geometric Acoustics (Sound Tracing)
Summary: Not so easy, but here are some papers
Keywords: Sound, acoustics, ray-trace
Message-ID: <240@csd4.milw.wisc.edu>
Date: 4 Jan 89 21:09:56 GMT
Reply-To: trantow@csd4.milw.wisc.edu (Jerry J Trantow)
Distribution: comp.graphics
Organization: University of Wisconsin-Milwaukee
Lines: 56

exploratory project very similar to the ideas proposed by Kjartan & Dagur.
 
Some of the Articles I have found include
 
Criteria for Quantitative Rating and Optimum Design on Concert Halls
 
Hulbert, G.M.  Baxa, D.E. Seireg, A.
University of Wisconsin - Madison
J Acoust Soc Am v 71 n 3 Mar 83 p 619-629
ISSN 0001-4966, Item Number: 061739
 
Design of room acoustics and a MCR reverberation system for Bjergsted
Concert hall in Stavanger
 
Strom, S.  Krokstad, A.  Sorsdal, S.  Stensby, S.
Appl Acoust v19 n6 1986 p 465-475
Norwegian Inst of Technology, Trondheim, Norw
ISSN 0003-682X, Item Number: 000913
 
 
I am also looking for an English Translation of
 
Ein Strahlverfolgungs-Verafahren Zur Berechnung von Schallfelern in Raemem
[ Ray-Tracing Program for the calculation of sound fields of rooms ]
 
Voralaender, M.
Acoustica v65 n3 Feb 88 p 138-148
ISSN 0001-7884, Item Number: 063350
 
If anyone is interested in doing a translation I can send the German copy
that I have.  It doesn't do an ignorant fool like myself any good and I
have a hard time convincing my wife or friends who know Deutch to do the
translation.
 
A good literature search can discover plenty of articles, quite a few of
which are about architectural design of music halls.  With a large concert
hall, the calculations are easier because of the dimensions.  (the wavelength
is small compared to the dimensions of the hall)
 
The cases I am interested in are complicated by the fact that I want to work
with relatively small rooms, large sources, and to top it off low (60hz)
frequencies.  I vaguely remember
seeing a blurb somewhere about a program done by BOSE ( the speaker
company) that calculated sound fields generated by speakers in a room.  I
would appreciate any information on such a beast.
 
From: trantow@csd4.milw.wisc.edu (Jerry J Trantow)
Path: csd4.milw.wisc.edu!trantow


The simple source for geometric acoustics is described in Beranek's Acoustic
in the chapter on Radiation of Sound.  To better appreciate the complexity 
from diffraction, try the chapter on The Radiation and Scattering of Sound in
Philip Morse's Vibration and Sound ISBN 0-88318-287-4.

I am curious as to the commercial software that is available in this area.  Does anyone have any experience they could comment on???