Several techniques are currently in use for measuring distortion of audio equipment. These include THD, IM-difference frequency, sine-square, random noise, and recently a three-tone intermodulation distortion test has been proposed. This paper compares the various methods, both theoretically and practically. The effects of changing the test frequencies used in each test on its sensitivity and practicality are discussed. It is found that this yields a significant improvement in sensitivity to many forms of distortion.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=3737
(1954KB)
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.
