A PLL demodulation is commonly applied to retrieve FM carriers from the CD-4 carrier disc on which the carriers are superimposed on the audio base-band signals. In the demodulation, distortion is often introduced because of nonlinearity in the recording and playback chain of the CD-4 system. This paper describes a method for measuring the distortion using a band noise, by which the demodulator distortion can be quantitatively determined, and an approach to its reduction is also discussed.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=3081
(713KB)
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.
