Sound pressure level definition
Sound pressure level means twenty times the logarithm to the base 10 of the ratio of the effective pressure (µPa) of a sound to the reference pressure of 20 µPa;
Sound pressure level of a sound, in decibels, means twenty (20) times the logarithm to the base ten of the ratio of the pressure of the sound to a reference pressure which shall be explicitly stated.
Sound pressure level means 20 times the logarithm to the base 10 of the ratio of the RMS sound pressure to the reference pressure of 20 micropascals (20x10-6 N/m2). The sound pressure level is denoted Lp or SPL and is expressed in decibels.
Examples of Sound pressure level in a sentence
Sound pressure level measures the air vibrations that comprise sounds, or the average variation in pressure.
More Definitions of Sound pressure level
Sound pressure level means twenty (20) times the logarithm to the base ten (10) of the ratio or the pressure of a sound to the reference pressure of twenty (20) micronewtons per square meter (20 × 106 newtons/meter2), and is expressed in decibels.
Sound pressure level means a sound pressure level of a sound, in decibels, as defined in ANSI Standards 51.2-1962 and 51.13-1921; that is, twenty (20) times the logarithm to the base ten
Sound pressure level means the level of a sound measured in dB units with a sound level meter which has a uniform (“flat”) response over the band of frequencies measured.
Sound pressure level means twenty times the logarithm to the base ten of the ratio of the RMS sound pressure to the reference pressure, which shall be twenty micropascals, denoted LP or SPL.
Sound pressure level means a sound pressure level of a sound, in decibels, as defined in ANSI Standards 51.2-1962 and 51.13-1921; that is, twenty times the logarithm to the base ten of the ratio of the pressure of the sound to a reference pressure, which reference pressure shall be explicitly stated.
Sound pressure level in decibels means 20 times the logarithm to the base 10 of the ratio of the pressure of this sound to the reference pressure, which reference pressure shall be explicitly stated.
Sound pressure level expressed in decibels, means the pressure fluctuations in air calculated as 20 times the logarithm to the base 10 of the ratio of the root mean square sound pressure (in pascals) to the reference sound pressure of 20 micropascals;