When 90dB is LOUDER than 120dB

The video explains that decibels measure the intensity of sound waves but not loudness. Loudness is influenced by frequency and human ear sensitivity, which varies across different frequencies. Decibels are used as a practical approximation for loudness in everyday situations, but they don't accurately measure loudness for all frequencies.

Why might someone choose a sound measuring 120 decibels over one measuring 90 decibels?

What is the relationship between decibels and the perception of loudness?

How do the frequency and pressure changes of sound waves affect our hearing?

What role do hair cells in the ear play in the perception of sound?

In what situations might decibels not be a good measure of loudness?