The harmonic, heterodyne (CCIF), and intermodulation (SMPTE) methods of distortion measurement are examined form a mathematical standpoint. It is found that all three methods yield equivalent information when properly applied but that the intermodulation method is most likely to yield objectively valid results in practical applications.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=127
(533KB)
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 Join the AES. If you need to check your member status, login to the Member Portal.
