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    How to measure decibels?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by ITemplate, Dec 18, 2008.

  1. ITemplate

    ITemplate Notebook Consultant

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    Hi,

    Some reviews and manufacturers display the laptop decibels, for example Lenovo does that in their laptop specs. I cant seem to find any reference about how/where this is measured and if we are talking peak or average noise level...

    Anyone knows some more information about this? Perhaps some links?

    Thanks.
     
    ITemplate, Dec 18, 2008
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  2. DetlevCM

    DetlevCM Notebook Nobel Laureate

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    Physics...
    decibels is - n*log base 10 of presure caused by the soundwave - I believe... its been a while.
     
    DetlevCM, Dec 18, 2008
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  3. Mr._Kubelwagen

    Mr._Kubelwagen More machine now than man

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    Yeah, Detlev, that's the theoretical way, but far from practical. I assume they use a regular microphone at various places on the laptop, and use software to figure out how loud it is.
     
    Mr._Kubelwagen, Dec 18, 2008
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  4. DetlevCM

    DetlevCM Notebook Nobel Laureate

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    Yes - any "decibel measuring device" (about the size of a larger BlackBerry, at least the older ones) will use a microphone.
    And you get a little needle (old one) showing you how much noise there is...

    (Used one in physics in Germany about 2.5-3 years ago...)
     
    DetlevCM, Dec 18, 2008
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