Audiovisual Dictionary Get to know the terms of the audiovisual ecosystem ALL0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ D3 Composite Digital video format, developed in 1989 by NHK and Matsushita (Panasonic) on 1/2 ”cassette tape, originally called Dx.Recognized by the SMPTE as D-3. Our Services POPsPlayoutRadio Production SystemsAudiovisual Consulting BACK TO INDEX Composite Digital Cassette Dx ← D2 D5 →