QUESTION:

Where did all the image-method and ray-tracing analysis functions go that were in Version 3.0 ?

ANSWER:

In all the time that v3 was being used, I didn't get a single question or query on the acoustic ray-tracing functions in ECOTECT. Either the help file was perfect and answered everything that anyone could have wanted to know, or no-one was using them. If figured the latter. I was going to write a specifically acoustic version of ECOTECT as I though these were some of its best analysis functions however thought better of it. However, v5 sees the return of many of the geometric acoustics functions of v3 as well as a whole range of updated acoustic analysis and animation routines.