The DP572 features Dolby E audio coding, developed specifically for the production and distribution of discrete multichannel audio. Unlike Dolby Digital, ideal for one-time transmission to the home, Dolby E audio can withstand ten or more encode/decode cycles without degradation.
With Dolby E, audio frames match video frames, assuring audio-follow-video edits free of mutes, glitches, or aberrations. This enables switching, routing, and performing assemble edits directly on the digital bitstream without decoding and re-encoding.
To accommodate the transition to multichannel audio, the DP572 is easily integrated into a broadcast facility that receives both Dolby E encoded material and stereo PCM signals. The DP572 decodes the Dolby E material and passes along the PCM signal unmodified.
With multichannel programming, a "5.1+2" configuration is typical, with six channels carrying a 5.1 mix, and two channels an matrix surround-encoded (Lt/Rt) or stereo two-channel mix. Other channel configurations are available. Front-panel LEDs indicate configurations of Dolby E signal.
The DP572 provides Dolby E inputs, video black reference, SMPTE timecode. Also, a PCM audio input allows voiceover operations and other advanced features to be performed internally, without additional equipment. Remote-control connectors, an alphanumeric display, channel-activity LEDs, and menu navigation buttons facilitate operation. A front-panel headphone jack provides confidence monitoring.
Dolby Laboratories, Inc., 100 Potrero Avenue, San Francisco, CA 94103-4813. Tel: 415-558-0200; Fax: 415-863-1373.