Subject: Spreadsheets and/or MATLAB for calculating loudness From: Ralph Muehleisen <muehleisen@xxxxxxxx> Date: Fri, 22 Jan 2010 16:23:14 -0600 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Does anyone have any spreadsheets or, failing that, MATLAB programs for calculating loudness with the various standard methods described in ISO 532 or ANSI S3.4 ? I would like to be able to have students doing some loudness computations in addition to A weighted Lp in my noise control in building course. This is not an audiology or psychoacoustic course so while I will discuss the limitations of the various methods, I'm not going to be going into gory detail on the various computational methods and will not want students to code their own solutions. I don't have anything for ISO 532A. It would be simple to implement if I had a database of the equal loudness index curves but I don't. I have found one MATLAB routine for implementing ISO 532B on the web, but no spreadsheets I have the windows executable that comes with ANSI S3.4-2007, but haven't seen any MATLAB code or spreadsheets. Ideally I'd like to have students using this but I don't have the time to code it up. Spreadsheets are preferred to MATLAB in this course but I'll take anything I can get. Can anyone help me out or point me in the right direction? Thanks in advance, Ralph Ralph Muehleisen, Ph.D., P.E., LEED AP, FASA Assistant Professor and Director of the Miller Acoustics Lab Civil, Architectural and Environmental Engineering Illinois Institute of Technology Chicago, IL 60616 muehleisen@xxxxxxxx tel: 312-567-3545 fax:312-567-3519