For 1.0 W of electrical input power, a certain loudspeaker produces a sound pressure level of 92 dB at a distance of 1 m from the speaker. When sound is radiated uniformly into a hemisphere, a handy rule is that the sound power level at the source is 8 dB greater than the level at 1 m. For this speaker, the sound power level at the source LW =
dB and the sound power W =
W
Answers: 3
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For 1.0 W of electrical input power, a certain loudspeaker produces a sound pressure level of 92 dB...
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