Solving For Sound Pressure Level SPL

sound wave pressure (P)

= 0

= 0

newton/meter^2

reference or hearing threshold pressure (P_{ref})

= 0

= 0

newton/meter^2

sound pressure level (SPL)

= NOT CALCULATED

Select to solve for a different unknown

Where

SPL | = | sound pressure level, decibels (db) |

P | = | sound wave pressure, newtons/meter^{2} |

P_{ref} | = | reference pressure or hearing threshold, newton/meter^{2} |

IL | = | intensity level, decibel (db) |

I | = | sound intensity, watt |

I_{0} | = | reference intensity or least audible sound level, watts |

P_{AV} | = | average power, watt |

NPL | = | noise pollution level, decibel (db) |

Notes:

- Usually, I

- Usually, P

References - Books:

1) P. Aarne Vesilind, J. Jeffrey Peirce and Ruth F. Weiner. 1994. Environmental Engineering. Butterworth Heinemann. 3rd ed.

2) Tipler, Paul A.. 1995. Physics For Scientists and Engineers. Worth Publishers. 3rd ed.

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