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Sound Design
Entry #1009
Why an alert tone is pitched to cut through the noise around it
An alert occupies a frequency band the ear is most sensitive to and that ambient noise rarely fills, so the tone is heard even when the environment is loud.
Adept
The hidden part
#1009
An alert is pitched where the ear is sharpest and the noise is thinnest. It cuts through not by being loud but by being in the right gap.