Digital Audio Modulation in the PAL and NTSC Laservision Video Disc Coding Formats
Kees A. Schouhamer Immink, Ad H. Hoogendijk, Joost A. Kahlman · IEEE Transactions on Consumer Electronics · 1983
We present an extension of the current LaserVision video disc format that includes a digital audio signal. We show the feasibility of a combined digital audio signal according to the Compact Disc Digital Audio format and the current analog audio signals in the NTSC video format, enabling the realization of a compatible system. For the PAL and SECAM video formats we show the feasibility of digital audio, but unfortunately it cannot be combined with the analog audio carriers.