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.
https://www.aes.org/e-lib/browse.cfm?elib=3081
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.
Learn more about the AES E-Library
Start a discussion about this paper!