Dark - Bright
A timbral balance descriptor in audio assessment.
Denotes the balance between bass and treble.
Scale applied in listening tests:
• Dark: Excessive bass. Either loud bass or weak treble
• Neutral: Bass and treble are perceived equally loud, there is a balance in the reproduction. This also applies if both bass and treble are equally weak or if the bass and treble are both too loud. If it leads to prominent or soft midrange this is assessed by the Midrange strength
• Bright: Excessive treble. Either loud treble or weak bass
The cause for the sound being dark or light can be deduced from the assessments of Bass Strength and Treble Strength.
[Reference: Report ITU-R BS.2399-0]