Decibel Meter, Professional Digital Sound Level Meter Noise Decibel Tester 30dB-130dB with LCD Color Display, A/C Frequency Weighting, USB Data Logger, Max/Min/Data Hold, Fast/Slow, Storage Bag HT622B
0:47
Decibel Meter, Professional Digital Sound Level Meter Noise Decibel Tester 30dB-130dB with LCD Color Display, A/C Frequency Weighting, USB Data Logger, Max/Min/Data
Decibel Meter, Professional Digital Sound Level Meter Noise Decibel Tester 30dB-130dB with LCD Color Display, A/C Frequency Weighting, USB Data Logger, Max/Min/Data Hold, Fast/Slow, Storage Bag HT622B: Amazon.com: Industrial & Scientific
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The range of sound intensities that the human ear can detect is so large that a special decibel scale (named after Alexander Graham Bell) is used to measure and compare sound intensities. The decibel level d B of a sound is given by d B(I)=10 log((I)/(I0)) where I0 is the intensity of sound that is barely audible to the human ear. Find the decibel level for the following sounds. Round to the nearest tenth of a decibel. Sound Intensit Intensity a. Automobile traffic I=1.58 ×10^8 ·I0 b. Quiet co
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