Intermodulation Distortion. An audio distortion which results when two or more different frequencies are combined within a nonlinear system. The output will then contain not only harmonics of the original frequencies, but also components at sum and difference frequencies that typically aren't harmonics of either input.
Intermodulation distortion - RF impairment where device non-idealities create new frequency components not in the original signal, including the common harmonic and two-tone distortion effects
Intermodulation Distortion. The ratio, in dB, of the total rms signal level of harmonic sum and difference distortion products, to the overall rms signal level. The test signal is two sine waves added together according to the following standards
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