Sound Loudness: Increase of 13.98 dB

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SUMMARY

The discussion focuses on calculating the increase in sound loudness when intensity increases by a factor of 25. Using the formula dB = 10 log(Ib/Ia), the correct calculation shows that the loudness increases by 13.98 dB. This conclusion is derived from substituting Ib/Ia with 25, confirming the accuracy of the result.

PREREQUISITES
  • Understanding of logarithmic functions
  • Familiarity with sound intensity concepts
  • Knowledge of decibel (dB) measurement
  • Basic algebra skills for manipulating equations
NEXT STEPS
  • Study the relationship between sound intensity and decibel levels
  • Learn about the decibel scale and its applications in acoustics
  • Explore logarithmic calculations in various scientific contexts
  • Investigate the effects of sound intensity on human perception of loudness
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Students in physics, audio engineers, and anyone interested in sound measurement and acoustics will benefit from this discussion.

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Homework Statement



How many decibels does the loudness of a sound increase if its intensity increases 25 times?

Homework Equations



dB = 10 log\frac{I_{b}}{I_{a}}

The Attempt at a Solution



\frac{I_{b}}{I_{a}} = \frac{25}{1}

dB = 10 log\frac{25}{1}
dB = 13.98
 
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Correct.
 

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