Direct metal mastering
Videos
Direct metal mastering is an analog audio disc mastering technique jointly developed by two German companies, Telefunken-Decca and Georg Neumann GmbH, toward the end of the 20th century after having s
DMM copper disc sitting on the turntable of a Neumann AM32 lacquer cutting lathe, built in the 1930s
Capacitance Electronic Disc
Videos
The Capacitance Electronic Disc is an analog video disc playback system developed by Radio Corporation of America, in which video and audio could be played back on a TV set using a special stylus and
Direct metal mastering
…Telefunken-Decca (Teldec) and Georg Neumann GmbH, toward the end of the 20th century after having seen the same technology used by RCA Princeton Labs for its SelectaVision videodiscs in the late 1970s. Records manufactured with this technology are often marked by a "DMM" logo on the outer record sleeve. Many current…
Exposed CED disc
200× light micrograph of a CED copy of True Grit (1969), showing that in this special case the closing credits of the film are directly visible on the disc itself. Because adjacent tracks on a CED encode the same line in the video signal across different frames, and because the closing credits scroll vertically at a constant rate, the signal produces a coherent image on the disc medium.