DP569 Multichannel Dolby Digital Encoder

The Dolby DP569 is the reference Dolby Digital multichannel audio encoder. It supports encoding bit rates of 56–640 kbps and channel configurations from mono to 5.1 channels. The DP569 is intended for digital TV, cable, satellite (DBS), and DVD mastering.

The DP569 provides three pairs of AES-3 digital audio inputs and a single AES-3 output. Previously-encoded Dolby Digital audio bitstreams pass through unchanged—automatically, if the DP569's bitstream detection feature is activated. One of the AES-3 inputs or the dedicated Reference Input connector can provide the sync reference for the unit.

EBU/SMPTE LTC and VITC timecode inputs make it possible to start and stop the encoder accurately to create separate program segments and soundtrack files for disc authoring. In broadcast, the timecode input can be used to derive the time stamps required by some video encoders for A/V synchronization.

A rear-panel connector provides external metadata input from other Dolby products. Two additional connectors provide general-purpose I/O signals, including status and control signals. Fault-monitoring circuits warn of actual or potential system failure, and bypass connections enable a hot-standby mode for broadcast installations.

The DP569's front panel features an alphanumeric LCD showing status parameters, and LEDs indicate channel activity. Controls include buttons for setting the front-panel display, configuration parameters, default, and preset modes. Front- and rear-panel serial interfaces, along with supplied application software, make it possible to configure and control the DP569 from Windows 95/98/NT-equipped PCs or other remote devices.

Dolby Laboratories, Inc., 100 Potrero Avenue, San Francisco, CA 94103-4813. Tel: 415-558-0200; Fax: 415-863-1373.