General qualities

Quiet/Loud
Low/High
Short/Long
Close/Distant
Non Dynamic/Dynamic
Tonal/Noisy
Natural/Artificial

Timbre

Dull/Bright
Smooth/Rough
Dry/Resonnant
Non Nasal/Nasal
Non Rich/Rich
Non Round/Round
Warm
Strident
Metallic

Morphology

Fast/Slow Attack
Fast/Slow Release
Crescendo/Decrescendo
Ascending/Descending
Constant/Fluctuating
Continuous/Discontinuous

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Crescendo/Decrescendo

Crescendo and decrescendo profiles refer to the direction of intensity variation over time. A crescendo sound increases in intensity over time: it becomes louder and louder. A decrescendo sound decreases in intensity over time: it becomes quieter and quieter.

Musical instruments Female/Male voices Simple sounds Complex sounds