Nonlinear distortion analysis using digital higher-order coherence spectra. - Yong Soo Cho 001; Sung Bae Kim; Elmer L. Hixson; Edward J. Powers (ICASSP, 1990)

A digital technique to estimate second-order distortion using higher order coherence spectra. - Yong Soo Cho 001; Sung Bae Kim; Elmer L. Hixson; Edward J. Powers (IEEE Trans. Signal Process., 1992)