GBC

Sound & Acoustics

Explore the science of sound, from decibels to perceived loudness.

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Explore the science of sound, from the physical pressure of audio waves against an eardrum to the perceived loudness of a roaring stadium.

Sound & Acoustics

Decibel (dB)

A logarithmic scale mapping sound intensity to mimic the human ear’s non-linear perception.

Logarithmic sound ratio unit

Sound & Acoustics

Hertz (Hz) - Audio

A frequency metric tracking physical compression wave cycles per second across the human hearing range.

Cycles per second

Sound & Acoustics

Pascal (Pa) - Acoustic

A unit measuring microscopic atmospheric pressure deviations exerted by passing audio waves.

Newtons per square metre (N/m²)

Sound & Acoustics

Phon

A psychoacoustic metric mapping human perception of loudness across different frequencies.

Equal-loudness level contour unit

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