The following is a number of simple calculation/simulation tools to help architects to understand basic principles in urban noise, room acoustics and acoustic materials.

• Sound reduction behind an environmental noise barrier

• Sound distribution in a rectangular urban street

• Absorption of micro-perforated panels/membranes

• Reverberation time in a rectangular room

• Acoustic animation in urban streets and squares

For the calculation formulae please look at here.

The above calulations need Java Runtime Environment version 5.0 above intalled in your computer.