An audio engineer takes decibel readings at distances of r$1=13$ m and r$2=21$ m from a concert stage speaker during a sound check. When he is r$1$ from the speaker, the engineer registers a decibel level of $\backslash$beta $1=104$ dB on his loudness meter.

What is the intensity of the sound, I$1,$ in watts per square meter, that is measured by the loudness meter when the engineer is a distance of r$1$ from the speaker?

How much power P$,$ in watts, is coming from the speaker during the sound check at distance r$1?$

Assuming that the speaker output does not change between the two measurements at r$1$ and r$2,$ what sound intensity level $\backslash$beta $2,$ in decibels, will the loudness meter report when the engineer is at a distance r$2$ from the speaker?

Answer rating: 100% (QA)

Given Distance r1 13 m Distance r2 21 m or 2 m Decibel level at r1 1 104 dB We know that the relatio... View the full answer