Answer: sones

AnswerCrossword Clue
SONESDecibel measures
sonesSONE, a unit of loudness
sonesunit for measuring the loudness of sound, equal to the loudness of a sound that, in the judgment of a group of listeners, is equal to that of a 1000-cycle-per-second reference sound having an intensity of 40 decibels
SONESMeasures of loudness
SONESAcoustical measures
SONESAcoustic units
SONESAcoustics measures
SONESAcoustic measures
SONESLoudness measures
SONESLoudness units
SONESUnits of sound
SONESSound units
SONESSound-measuring units
SONESMeasures of volume
SONESDecibel cousins
SONESSound measurements
SONESVolume units
SONESUnits of loudness