Question

what is noise? write the unit of sound level​

Answer 1

Answer:

dB, decibel - noise of sound measurement is called decibels (dB). Ratio of the sound pressure to reference pressure to something. sone - a unit of perceived loudness equal to the loudness of a 1000-hertz tone at 40 dB above threshold, starting with 1 sone.

Answer 2

Explanation:

decibels

We measure sound intensity (also referred to as sound power or sound pressure) in units called decibels. Decibels (dB) are named in honor of Alexander Graham Bell, the inventor of both the telephone and the audiometer. An audiometer is a device that measures how well a person can hear certain sounds.