A3.02
Loudness perception and equal-loudness contours
Cards in this group · 5
- A3.02.1Loudness does not scale linearly with sound pressure, so volume controls should step by loudness, not pressure
- A3.02.2Ambient noise sets the usable loudness floor
- A3.02.3Equal-loudness contours curl up at the low and high ends, making bass and treble harder to notice at low volume
- A3.02.4A brief sound's perceived loudness is lower than a sustained sound at the same sound pressure
- A3.02.5A uniform volume number across devices does not guarantee uniform perceived loudness