Lärmbekämpfung

The sound power level is the most important parameter for describing the noise emission of machines and other products. It must therefore be possible to determine it with the least possible effort by means of standardised measurement procedures...

Acoustical comfort normally requires a profound design planning and elaborate structural measures in rooms. Both are usually carried out by specialists and rarely in a do-it-yourself manner. Both the planning and the implementation of the measures...

Suspended ceilings have an impact on sound insulations as well as on room acoustics. The suspension height, meaning the space between room ceiling and suspended ceiling, is an important parameter which influences both acoustical effects. According...

The development of speech intelligibility tests began over 80 years ago, originally for the needs of telephone technology. The initial aim was to test the quality of electro-acoustic transmission systems and routes. The indicator for this was the...