Sound pressure level – a measure of sound volume
Sound pressure level is a key physical quantity in the field of acoustics and technical sound insulation. It describes the strength of a sound signal and is measured in decibels (dB). The sound pressure level is based on the logarithmic ratio of the measured sound pressure to a reference value of 20 micropascal – the hearing threshold of the human ear at 1,000 Hz.
An increase in sound pressure level means an increase in perceived volume. Even an increase of 10 dB is perceived by the human ear as a doubling of the volume. Therefore, the sound pressure level is a decisive parameter in the assessment of noise pollution in working environments, vehicles, machines or buildings.
Typical applications in sound insulation:
In practice, the sound pressure level is used to assess the effectiveness of sound insulation measures – for example, when selecting sound absorbers, sound insulation materials or enclosures. The aim is to reduce the sound pressure level in sensitive areas and thus ensure acoustic comfort and compliance with statutory noise limits.
Cellofoam products for reducing sound pressure levels
Cellofoam offers a wide range of products specifically designed to reduce sound pressure levels – from PUR and PE foams to PES nonwovens and customised acoustic solutions for industry, automotive engineering and building protection.
Here are a few product examples:
- CELLO® 451: PUR foam with a visually appealing and sound-absorbing fleece. Cello® 451 impresses with its oil- and water-repellent surface and extremely stable mechanical properties.
- CELLO® 491: PUR foam laminated with a thin film (black). Cello® 491 impresses with its oil, water and fuel-repellent surface, which can also be easily wiped clean.
- CELLO® 521: PUR foam with an air-permeable sealed surface in a dimpled form. Cello® 521 impresses with its excellent sound-absorbing properties.
- CELLO® F700 FR HO ALG-01: A water-repellent polyester fleece with an aluminium surface and drainage layer for draining liquids.
- CELLO® F800 FR ALG-01: A white polyester fleece with an aluminium surface that impresses with its high dimensional stability and excellent sound-absorbing properties.
Conclusion
Sound pressure level is a key parameter for assessing noise and acoustic pollution in technical applications. It enables the objective measurement and comparison of sound sources and is therefore an important basis for the planning and implementation of effective noise protection measures.
Targeted products such as sound absorbers and insulation materials from Cellofoam can effectively reduce the sound pressure level in machines, vehicles and buildings – for greater peace, safety and comfort.
If you have any questions about sound pressure levels or selecting suitable sound insulation solutions, please do not hesitate to contact us. Our team of experts will be happy to provide you with competent and individual advice.