- The use of a mask.
- The amount by which the threshold of hearing a sound is increased due to the presence of another, obscuring sound. The level of masking is usually expressed in decibels. Also called masking effect (1), audio masking, or aural masking.
- The manner in which a signal, property, or phenomenon is obscured by another. Also, the extent to which this occurs. Also called masking effect (2).
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