MeasuredEstablished
What hertz says, and what it does not
Audible frequency · A rate, not a promise
Hertz counts cycles per second. It helps describe pitch, but does not by itself specify level, timbre, or emotional effect.MeasuredEstablished
Frequency and sound level are different quantities: sound level is described in decibels on a logarithmic scale.
Sources for this claim
Thought experimentHear two tones at the same level: what does the body interpret beyond the number?