intensity, strength, intensity level -- (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")
intensity, intensiveness -- (high level or degree; the property of being intense)
volume, loudness, intensity -- (the magnitude of sound (usually in a specified direction); "the kids played their music at full volume")
saturation, chroma, intensity, vividness -- (chromatic purity: freedom from dilution with white and hence vivid in hue)
(Sound)
