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Acoustics

A brief guide to technical aspects of noise measurement including terms, measurements and equations used.

Glossary of Acoustic Terms
What are Frequency Responses?
What are Ln and Percentile Levels?
What are Octave Bands?
What are Time Weightings?
What is Dose?
What is Leq (or Equivalent Continuous Sound Pressure Level)?
What is Lex (or Lepd)?
What is Projected Dose?
What is Sound Exposure Level (SEL)?
What is Sound Pressure Level?
What is the Class System for Sound Meters?
What is the Difference between Lmax, Lmin and Peak?
Why Should I Wear Hearing Protection?
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