Question

please tell the answer​

Answer 1

Answer

1. self homework

2. idk

please be clear with ur questions it makes no sense

Answer 2

Answer:

A sound unit is any acoustic unit of sound measurement. 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.