The RCA Quadulator
Cutting of master lacquers for discrete quadraphonic (CD-4) records requires a device for obtaining sum and difference signals, a method of angular modulation of the 30 kHz carrier and associated signal processors. A new modulation system using phase-lock loop circuitry will be described which results in wider dynamic range and lower distortion than previous techniques, and is of far simpler construction. Careful examination of the subjective effect of individual signal processors has led to a further reduction in size and complexity.
Click to purchase paper 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 $20 for non-members, $5 for AES members and is free for E-Library subscribers.