Related Clues

• Loudness measure
• Unit of loudness
• Loudness unit
• Sound amount
• Unit of volume
• 40-decibel unit
• It's about 40 decibels
• Volume unit
• Acoustical unit
• Subjective sound unit
• Volume measure
• Acoustic measure
• Sound measure
• ~40-decibel unit
• Unit measuring loudness
• Sound unit
• Aural measure