# How does dB work?

**dB**. A sound 10 times more powerful is 10

**dB**.

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Likewise, how much louder is 10 dB?

Doubling of the volume (loudness) should be sensed as a level difference of +**10 dB** − acousticians say. Doubling of sound intensity (acoustic energy) belongs to a calculated level change of +3 **dB**. +**10 dB** is the level of twice the perceived volume or twice as **loud** (loudness) in psychoacoustics − mostly sensed.

Likewise, why do we use decibels? The **decibel** (**dB**) is a logarithmic unit **used** to measure sound level. It is also widely **used** in electronics, signals and communication. The **dB** is a logarithmic way of describing a ratio. The ratio may be power, sound pressure, voltage or intensity or several other things.

Simply so, how do you read a dB level?

On a ruler, a distance of 20cm is twice as long as a distance of 10cm and 30cm is three times as long. But the logarithmic **decibel** scale goes up in powers of ten: every increase of 10dB on the scale is equivalent to a 10-fold increase in sound intensity (which broadly corresponds with a doubling in loudness).

What does 30 decibels sound like?

Every day we hear a variety of **sounds**. **Sounds** that are too loud or loud **sounds** over a long time, can damage your hearing. The loudness of **sounds** is measured in **decibels** (dB).

**Decibels** Explained.

Decibel Level | Source |
---|---|

20 dB | Rustling leaves, mosquito |

30 dB | Whisper |

40 dB | Stream, refrigerator humming |

50-60 dB | Quiet office |