Impairment created when two frequencies interact to create an erroneous frequency, in turn distorting the data signal representation.
Distortion generated by the faulty mixture of different input frequencies. This is a primary cause of harshness and lack of intelligibility in a hearing aid.
(in loudspeakers) Is the distortion generated in single cone speakers when the cone is reproducing a high and low frequency simultaneously. The high frequency peaks will be flattened off if the low frequency is distorted in any way. also see: AKA: Antonym: Source: http://www.the12volt.com/glossary/glossary.asp