The "SPL" refers to the deviation in air pressure over atmospheric pressure, caused by a sound wave.
sounds difficult, it is not. As you know the sound is a traveling wave, which consists of pressure oscillations of the molecules of the means by which advances (air, water or solids). In the case of SPL, these pressure oscillations are measured with respect to atmospheric pressure.
Level Sound pressure is the average logarithmic measure of sound pressure with respect to a reference level. Generally this level is what is considered the sound pressure, the weakest sound audible: 20 micro Pascals.
While the sound pressure is measured in Pascals, Sound Pressure Level measured in decibels SPL, and abbreviated "dB SPL " by the acronym of the Sound Pressure Level. The more decibels SPL has a sound, stronger, or more volume is perceived. Prolonged exposure to levels above 85 dB SPL (approximately) cause temporary hearing loss, but can also cause irreversible damage. Sound pressure levels around 120 dB SPL cause irreversible damage to the ear, and is more or less at this point where the pain threshold. The eardrum must be very tight so as not to break the sound pressure level, your ears hurt.
Above the 194 dB SPL no longer waves become sound and shock waves, such as explosions. They are very destructive.
Below is a table of values \u200b\u200bof Sound Pressure in pascals and sound pressure levels in dB SPL, for some common sound sources.
sounds difficult, it is not. As you know the sound is a traveling wave, which consists of pressure oscillations of the molecules of the means by which advances (air, water or solids). In the case of SPL, these pressure oscillations are measured with respect to atmospheric pressure.
Level Sound pressure is the average logarithmic measure of sound pressure with respect to a reference level. Generally this level is what is considered the sound pressure, the weakest sound audible: 20 micro Pascals.
While the sound pressure is measured in Pascals, Sound Pressure Level measured in decibels SPL, and abbreviated "dB SPL " by the acronym of the Sound Pressure Level. The more decibels SPL has a sound, stronger, or more volume is perceived. Prolonged exposure to levels above 85 dB SPL (approximately) cause temporary hearing loss, but can also cause irreversible damage. Sound pressure levels around 120 dB SPL cause irreversible damage to the ear, and is more or less at this point where the pain threshold. The eardrum must be very tight so as not to break the sound pressure level, your ears hurt.
Above the 194 dB SPL no longer waves become sound and shock waves, such as explosions. They are very destructive.
Below is a table of values \u200b\u200bof Sound Pressure in pascals and sound pressure levels in dB SPL, for some common sound sources.
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