Intensity
This presentation is the property of its rightful owner.
Sponsored Links
1 / 7

Intensity PowerPoint PPT Presentation


  • 67 Views
  • Uploaded on
  • Presentation posted in: General

Intensity. Scales Exponents Logarithms dB dB SPL. Scales. Linear Ratio. Exponents. Shorthand method of displaying very large or small numbers Numbers greater than 1 involve positive exponents Numbers less than 1 involve negative exponents. Logarithms.

Download Presentation

Intensity

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Intensity

Intensity

  • Scales

  • Exponents

  • Logarithms

  • dB

  • dB SPL


Scales

Scales

  • Linear

  • Ratio


Exponents

Exponents

  • Shorthand method of displaying very large or small numbers

  • Numbers greater than 1 involve positive exponents

  • Numbers less than 1 involve negative exponents


Logarithms

Logarithms

  • Base 10 logarithms used in the decibel

  • Examples

    • 1000 = 10 4 = 4

    • 1 = 10 0 = 0

    • .001 = 10 -3 = -3


Decibel

Decibel

  • Standard measure of intensity

  • dB = 20 (log Po / Pr)

    • Where Po = pressure output

    • Where Pr = pressure reference


Db spl

dB SPL

  • Decibel Sound Pressure Level (dB SPL)

  • Standard reference level.

  • dB SPL = 20 (log Po / 20µPa)

    • Where Pa = Pascal (measure of force)

  • dB SPL = 20 (log Po / .0002 dynes/cm2)

    • Where dynes are a measure of force


Summary

Summary


  • Login