decybels
Why do people want to measure the temperature? To tell a number for what they are subjectively feeling - and to tell if it is too hot or too cold Why do people want to measure the loudness of a sound? To tell a number for what they are subjectively hearing - and to tell if it is too loud, but never if it is too soft. The subjective loudness is not measurable. Instead we mostly measure the objective sound pressure in pascals or the sound pressure level SPL in dB, or in dbA if there are weighting filters.
to measure sound from distance use decibels
what machine can be used to measure sound waves
The standard unit of measure for sound is the decibel (dB).
The amplitude of a sound wave is the measure of the intensity of the sound, such as loudness.
A decibel is a measure for sound.
Tools used to measure sound include sound level meters, which measure the intensity of sound in decibels, and spectrum analyzers, which show the frequency components of sound. Other tools include acoustic calibrators for calibrating the measurement equipment and noise dosimeters for monitoring sound exposure over time.
Take a sound pressure level meter (SPL meter). Try to measure the sound pressure p.
You measure the sound pressure with a sound pressure level meter (SPL meter).
People's perceptions of sound intensity is known as loudness.
a Sound Pressure Level Meter is used to measure sound levels.See related link.
Your ears and the sound pressure level meter "measure" the sound pressure of a sound wave. Sound intensity is measured in watts per square meter.Intensity is measured in watts per square meter.Note: Sound power (sound intensity) is the cause -and the sound pressure is the effect.The effect is of particular interest to the sound engineer.