system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does frequency(Hz) affect loudness(dB)?
gpt
It doesn't, but humans don't have a flat hearing curve so we hear some frequencies louder than others.

Sometimes you see the audio level expressed in dBA which means the A curve was used, giving a closer approximation to actual hearing that raw dB. There's actually many different loudness curves.