What instrument measures sound intensity?

Answer 1

An oscilloscope measures electrical signal amplitude and wavelength.

A decibel or sound-level meter. A cheap one is available at your local Walmart for about $20 located in the car audio section. If not instore, online. They make much better ones, but if you are looking to just get a rough idea, this is the way to go.

Answer 2

loudness of sound is subjective quantity and depends upon the sensitivity of the person hearing the sound whereas intensity of sound is a physical quantity and can be measured accurately.

Sound intensity is measureable by the compression of air wrought by the soundwave. Use a "sound pressure level meter", available from most hardware stores, to measure the intensity of sound.
Your ears and the sound pressure level meter measure the sound pressure of a sound wave.

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.

Wellknown is a sound pressure level meter = SPL meter. Our ear drums are moved by sound pressure variations and so are microphone diaphragms. Forget the intensity!
Wellknown is a sound pressure level meter = SPL meter. Our ear drums are moved by sound pressure variations and so are microphone diaphragms. Forget the intensity!

Answer 3

There is not only "one" amplitude.

There is an amplitude of particle displacement ξ, or displacement amplitude,

an amplitude of sound pressure p or pressure amplitude,

an amplitude of sound particle velocity v, or particle velocity amplitude,

an amplitude of pressure gradient Δ p, or pressure gradient amplitude.

If the "sound" inceases, the "amplitude" also increases.

Answer 4

The amplitude of a sound wave is the measure of the intensity of the sound, such as loudness.Amplitude measure how forceful the wave is,It is measured in decibels or dBA.

Answer 5

A sound level meter measures sound intensity in decibels. It consists of a microphone to pick up sound, an amplifier, and a display to show the level of sound.

Answer 6

There are various instruments that are used to measure the sound waves. Some of these instruments are the Decibilometer, Oscilloscope and the Sound Level Meter.

Answer 7

A sound level meter measures the loudness of sound.

A dosimeter measures how much sound a person is exposed to.

Take your pick.

Answer 8

Wellknown is a sound pressure level meter = SPL meter. Our ear drums are moved by sound pressure variations and so are microphone diaphragms. Forget the intensity!

Answer 9

echo is used to measure the velocity of sound

Answer 10

The amplitude of sound is measured in N per square meter ( N / m^2 ) or in Pascals ,since
1.0 Pa = 1.0 N/m^2.