Abstract:
An algorithm for auralisation of sound insulation in buildings was developed. It allows the influence of sound transmission paths through building structures and of the receiving room to be modelled. The auralisation tool is added to a PC programme for determination of the sound insulation of buildings from the performance of building products in accordance with EN 12354 part1. Consequently the one-third octave band input data of the standardised prediction model are used as input data.. Elementary data processing like filter theory, binaural technology and convolution with source signals are used. The specific receiving room situation was considered to have only secondary importance and was approximated. The auralised sound gives an absolutely natural binaural impression both concerning loudness and coloration. Generation of a receiving room signal requires in total 10 seconds on a Pentium II PC with 233 MHz. Replay is performed via the plug-in PC sound card. The auralisation allows sound insulation to be evaluated by sound examples rather than just by single numbers. It is, therefore, a very efficient tool for the building designer and the acoustic consultant.