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Many kinds of instruments measure signals in decibels (dB). Since dB represents nothing more than a log ratio of two quantities, anything that can be quantized could be measured in dB. The most common things measured that way, however, are: * Sound Levels (an SPL Meter)
* Electrical power levels (a Network Analyser, a Spectrum Analyser, Power Meters)
* Light levels (an Optical Spectrum analyser or Power Meter). Note that dB is always a relative term, however figures are often quoted with respect to some reference such as 'dB(SPL)" used for sound where the reference is the quietest sound a human can hear, or dBm for electrical power where the reference is 1 mW.

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Q: What machine measures decibels?
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Related questions

What is a machine that measures decibels?

An SPLOIUYTR machine measures decibels.


What are waves measured in?

•Sound can be measured in many ways such as decibels. There is a special machine which you can by that measures how many decibels something makes. A pin makes 10 decibels where as a loud persons or a stereo can make up to 80 decibels. Volume is measured in decibels. So Frequency is measured in hertz


What units are waves measured in?

•Sound can be measured in many ways such as decibels. There is a special machine which you can by that measures how many decibels something makes. A pin makes 10 decibels where as a loud persons or a stereo can make up to 80 decibels. Volume is measured in decibels. So Frequency is measured in hertz


What unit are sound waves measured in?

•Sound can be measured in many ways such as decibels. There is a special machine which you can by that measures how many decibels something makes. A pin makes 10 decibels where as a loud persons or a stereo can make up to 80 decibels. Volume is measured in decibels. So Frequency is measured in hertz


What measures the loudness of a sound wave?

decibels


What is the logarithmic scale that measures sound level?

deciBels


How loud is a washing machine in decibels?

Aome machines claim to spin at 74 decibels. Is that loud?


How loud does a pig scream?

A jet enjine at take-off measures 113 decibels, while a surprised pig can squeal at 115 decibels.


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What is the unit that measures relative loudness?

i would say decibels but this is a guess its what sound is measured in


What db level is a whisper?

A whisper typically measures around 20-30 decibels.