intensity

Noun

• chromatic purity: freedom from dilution with white and hence vivid in hue

• the magnitude of sound (usually in a specified direction)
  • the kids played their music at full volume
    

• high level or degree; the property of being intense

• the amount of energy transmitted (as by acoustic or electromagnetic radiation)
  • he adjusted the intensity of the sound
    
  • they measured the station's signal strength
    

Related words

• Synonyms: 
  saturation , chroma , vividness , volume , loudness , intensiveness , strength , intensity level