Distortion measures obtained with a single sine wave (harmonic distortion), two sine waves (intermodulation distortion) and wide band noise all indicates the magnitude of the harmonics and other frequencies produced in non-linear systems, but, correlate poorly with intelligibility tests. At the present time, none of these measures is suitable for predicting relative speech intelligibility scores for a mixed group of non-linear systems. Measurements, analysis and intelligibility scores are compared for four non-linear elements.

Authors: Peters, Richard W.; Burkhard, Mahlon D.
Affiliation: Industrial Research Products, Inc., Elk Grove Village, IL
AES Convention: 35 (October 1968) Paper Number: 616
Publication Date: October 1, 1968

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