Question

Describe an accurate method of determination of intensity of sound

Answer 1

One method of sound intensity measurement involves the use of two microphones located close to each other, normal to the direction of sound energy flow. A signal analyser is used to compute the crosspower between the measured pressures and the sound intensity is derived from (proportional to) the imaginary part of the crosspower.
For a spherical sound wave, the intensity in the radial direction as a function of distance rfrom the centre of the sphere is given in pictures.

Answer 2

Concept Introduction:

A sound's intensity is calculated by dividing its power, measured in Watts, by the area it covers, measured in square meters. Any given sound's intensity is related to its intensity at the hearing threshold by its loudness. Decibels are used to measure it (dB).

Explanation:

We have been given a question intensity of sound.

We have to write an accurate method of determining the intensity of sound.

Two microphones placed close to one another and oriented in the same direction as the flow of sound energy are one way to assess sound intensity. The crossover between both the observed pressures is calculated using a signal analyzer, as well as the sound pressure level is determined from (commensurate to) the creation of various of the cross power.

Final Answer:

The final answer is by placing two microphones.

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