How do decibels scale with wave amplitude?

1. How is decibels related to amplitude?
2. How are decibels related to sound waves?
3. How do you scale decibels?

How is decibels related to amplitude?

Decibels measure sound intensity (amplitude)

It can be measured in two ways: frequency and amplitude. Frequency, reported in Hertz (Hz), measures the number of sound vibrations in one second. In daily life, this corresponds to how low- or high-pitched something is.

How are decibels related to sound waves?

Loudness of sound is measured in decibels (dB). This is actually a measure of intensity, which relates to how much energy the pressure wave has. Decibels are a relative measurement. They relate the intensity of a pressure wave to a normal or standard pressure.

How do you scale decibels?

Step 1: Find out the difference between two noise levels and then find the corresponding row in the left-hand column. Step 2: Find the corresponding number in dB in the right-hand column. Step 3: Add the number in the right-hand column to the highest of the two-decibel measurements you have.