Decibels to Gain

Decibels

Decibels (dB) measure sound level on a logarithmic scale, matching how human hearing perceives loudness.

dB to Linear Gain

The Web Audio API's GainNode expects a linear gain value (0 to 1+). Convert from dB:

gain = 10^(dB / 20)

Key Reference Points

Why Logarithmic?

A 6 dB increase always doubles the amplitude, regardless of the starting level. This matches how we perceive sound — each doubling of loudness feels like a similar step up.

Your Task

Implement dBToGain(db) that converts decibels to linear gain.

Run your code to hear the same note played at 0 dB and −12 dB.