Greenwood, D D Combination bands of even order: masking effects and estimations of level of the difference bands (f h -f 1 ) and 2(f h -f 1 ). [electronic resource] - The Journal of the Acoustical Society of America Oct 1972 - 1155-67 p. digital Publication Type: Journal Article ISSN: 0001-4966 Standard No.: 10.1121/1.1913228 doi Subjects--Topical Terms: Auditory ThresholdNoisePerceptual Masking