Weighted sound pressure level
A weighted sound pressure level is used in acoustic measurement technology in order to obtain a quantity that approximates the auditory perception of humans based on the sound pressure level as a physical quantity .
The weighted sound pressure level is neither a physiological nor a physical measured variable . Taking into account certain properties of the human hearing, it is based in an objectively defined and reproducible way on the physical quantity sound pressure level.
A distinction is made between frequency weighting curves and time weighting curves .
Evaluated level values are identified by indices on the sign of the measured variable. Example: L pAF = 60 dB.
In practice, brackets are often used after the level measurement in dB ( decibel ), for example: L AF = 60 dB (A), L p C, peak = 135 dB (C).
See also
literature
- Holger Luczak: ergonomics . 2nd edition, Springer Verlag 1998, ISBN 3-540-59138-9
- Werner Schirmer: Technical noise protection , VDI Verlag 1996, ISBN 3-18-401339-1