Dolby DP570

The DP570 Multichannel Audio Tool greatly simplifies the preparation of content intended for Dolby E and Dolby Digital encoding applications. Its ability to completely configure and control the monitoring environment and set metadata parameters makes it the key product for postproduction, DVD, and DTV facilities that master, author, or broadcast program material with Dolby surround sound audio. Users can monitor exactly what the consumer ultimately hears on these programs.

The DP570 makes it possible to take full advantage of audio metadata, the unique data about the data that Dolby Digital bitstreams deliver to consumer decoders. Metadata ensures that home listeners will hear programs as their producers originally intended. The DP570 enables the user to create new metadata, and to modify any metadata generated throughout the production and distribution process. In addition, it includes the ability to determine and to properly set the dialogue normalization (dialnorm) value using the ITU-R BS.1770-1 algorithm.

The effect audio metadata has upon the reproduced programming can be monitored in real time, without the need for a Dolby Digital encoder and decoder. The DP570 outputs metadata as a separate data stream, to be combined later with the multichannel audio by a Dolby E or Dolby Digital encoder.

The DP570 accepts up to eight audio channels configured as four digital pairs, and it has two independent sets of outputs. One set provides the multichannel program signal in the SMPTE-recommended channel assignment, via a user-controllable builtin router. The second, the emulator set, facilitates monitoring in different listening modes without affecting the main audio path.

The DP570 is particularly useful in conjunction with audio consoles lacking adequate multichannel monitoring facilities. With the addition of the high-performance 24-bit Cat. No. 548 Analog Option Card, 5.1-channel, two-channel, and mono outputs are available to feed three speaker systems independently; the card also gives users control over levels, channel mutes, and channel solos. An additional input and built-in Dolby Pro Logic II and Pro Logic decoders also allow proper monitoring of Lt/Rt sources and downmixes from all other inputs.

The DP570 contains extensive GPI/O control and includes a software remote application for use with a Windows-based PC. Optionally, the Cat. No. 549 GPI/O Controller provides key remote control functions.

Core Measurement Algorithm
ITU-R BS.1770-1

Audio Sampling Rates
32 kHz, 44.1 kHz (

Audio Word Length
Up to 24 bits

Video Frame Rates
29.97 fps (NTSC); 25 fps (PAL); 23.98, 24, 30 fps (requires DP579 Dolby
Tri-Level Sync Interface)

Frequency Response
20 Hz to 20 kHz, 0.5 dB

Audio Processing Delay
27 ms minimum (emulator outputs)

Presets
32 system setting presets can be stored/recalled

Power Requirements
90–264 VAC, 50–60 Hz, auto-sensing, 40 W maximum; designed to operate from a centrally switched power source

Dimensions and Weight
2-U rackmount: 88 × 483 × 330 mm (3.5 × 19 × 13 inches)
Net: 4.8 kg (10.5 lb)

Regulatory Notices
North America: This unit complies with the limits for a Class A digital device pursuant to Part 15 of the FCC rules and Industry Canada ICES-003 Class A requirements, and is UL Listed for the US and Canada.
Europe: This unit complies with the requirements of Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC and carries the CE marking accordingly.

Warranty
One-year limited, parts and labor; see disclaimer.
Specifications subject to change without notice.

Disclaimer of Warranties
Equipment manufactured by Dolby Laboratories is warranted against defects in materials and workmanship for a period of one year from the date of purchase. There are no other express or implied warranties and no warranty of merchantability or fitness for a particular purpose, or of noninfringement of third-party rights (including, but not limited to, copyright and patent rights).

Limitation of Liability
It is understood and agreed that Dolby Laboratories liability whether in contract, in tort, under any warranty, in negligence, or otherwise shall not exceed the cost of repair or replacement of the defective components or accused infringing devices, and under no circumstances shall Dolby Laboratories be liable for incidental, special, direct, indirect, or consequential damages (including, but not limited to, damage to software or recorded audio or visual material), cost of defense, or loss of use, revenue, or profit even if Dolby Laboratories or its agents have been advised, orally or in writing, of the possibility of such damages.