In the conventional FM stereo demodulator, interference from adjacent channels is demodulated by the harmonics of a square-wave switching signal resulting in a high-pitched whistle-type noise. In this new demodulator no such noise is generated because the switching square waves are derived from Walsh functions. The low-pass filter can therefore be eliminated, producing a phase-linear composite signal characteristic with high separation and low distortion.
https://www.aes.org/e-lib/browse.cfm?elib=4430
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!