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Examining Nonlinear Distortion with Multitone Stimuli

We present some experimental results using multitone stimuli in conjunction with the DFT to analyze distortions caused by some simple nonlinear models. In particular, we compare THD and SMPTE IMD measurements using a multitone signal with those made in the traditional way. To do this we formulate an appropriate set of multitone signals that allow comparison with standard measurements. From the resulting measurements we conclude that there is often no simple quantitative relationship between the numbers obtained from multitone measurements and those from the standard methods.

Authors: Ward, Benjamin; Messing, Dean
Affiliation: TektronixInc., Digital Signal Processing Group, Beaverton, OR
AES Conference:11th International Conference: Test & Measurement (May 1992)
Paper Number:11-006 Import into BibTeX
Subject:Test & Measurement

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