Three distortion methods, the harmonic, the SMPTE intermodulation, and the difference frequency (CCIF), have been studied mainly on a theoretical basis, as a means of analyzing distortion encountered in phonograph reproduction. The harmonic method is somewhat difficult to apply, and some of the harmonics may be beyond the range of the system. The IM method has been used in the past with considerable success and appears to be a good method of analyzing tracing distortion. The difference frequency method appears to be somewhat insensitive to tracing distortion but offers advantages in that the analysis may be made right up to the cutoff frequency of the system.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.