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...

The poor room acoustics situation in many educational institutions has been criticized for years and has been the reason for the revision of the room acoustics standard DIN 18041 on several occasions. This is not only about speech intelligibility...

The version of DIN 4109 – Sound insulation in buildings – introduced under building law only lists average sound pressure levels as a parameter for determining sound insulation in its requirements for sound insulation against external noise,...

The „overall noise assessment“ has recently become increasingly important in the context of authorisation procedures. However, there is no clarity as to what this ‘overall’ means or how the overall should be calculated. As long as the noise...

Sources of climate-friendly and renewable energy are now more important than ever before, simply as a result of global political events. Terms such as energy transition, wind and solar energy, wind turbines and photovoltaics are being discussed in...