Dolby Laboratories DP570 User Manual
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Dolby Laboratories DP570 User Manual

Dolby Laboratories DP570 User Manual

Multichannel audio tool
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Model DP570
Multichannel Audio Tool
User's Manual
Issue 2
Part Number 91753

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  • Page 1 Model DP570 Multichannel Audio Tool User’s Manual Issue 2 Part Number 91753...
  • Page 2 Wiltshire, SN4 8QJ, England Telephone (44) 1793-842100 Fax (44) 1793-842101 Dolby, Dolby Pro Logic, and the double-D symbol are registered trademarks of Dolby Laboratories. Surround EX and AC-3 are trademarks of Dolby Laboratories. All other trademarks remain the property of their respective owners.

  • Page 3: Table Of Contents

    Model DP570 User’s Manual Table of Contents List of Figures ..........................vi List of Tables..........................vii Regulatory Notices and Fusing Information..............viii Fusing Information ....................x Chapter 1 Introduction Principles of Operation ..................1-1 Chapter 2 Setting Up Unpacking and Inspection................ 2-1 Installing ....................2-1 The Back Panel ..................
  • Page 4 Model DP570 User’s Manual Input Router Settings................4-10 Using the GPI/O Port ................4-10 4.7.1 Using an External Shaft Encoder to Control Master Volume..4-15 4.7.2 Solo Input Mode................. 4-15 Chapter 5 Front-Panel Interface Hot Button Menus ..................5-1 The Setup Menu ..................5-2 5.2.1 Selecting Parameters ..............
  • Page 5 Model DP570 User’s Manual 7.7.2 Audio Processing ............... 7-11 7.7.3 Dynamic Range................7-12 7.7.4 Bitstream Info ................7-13 7.7.5 Extended BSI ................7-14 Monitor Window..................7-15 7.8.1 Volume..................7-15 7.8.2 Speakers ..................7-16 Input Lock....................7-16 7.10 Level Meters ..................7-16 7.11...

  • Page 6: List Of Figures

    List of Figures Figure 1 Checking the Main Fuse....................x Figure 1-1 Audio Block Diagram ....................1-2 Figure 2-1 Connecting the DP570....................2-2 Figure 2-2 Connections: Signal In and Out.................. 2-3 Figure 2-3 Connections: Analog Outputs, GPI/O, and Ethernet..........2-4 Figure 2-4 Connections: Metadata In and Out, Serial Remote ............
  • Page 7 Model DP570 User’s Manual List of Tables Table 4-1 Metadata Defaults......................4-6 Table 4-2 Channel Mapping according to Program Configuration ..........4-9 Table 4-3 Factory Preset Input Assignments ................4-10 Table 4-4 GPI/O Pin Assignments..................... 4-11 Table 4-5 Functions available for GPO Pin Assignment............4-12 Table 4-6 Assigned GPO Pins (not user-definable)..............

  • Page 8: Regulatory Notices And Fusing Information

    Model DP570 User’s Manual Regulatory Notices and Fusing Information This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
  • Page 9 Model DP570 User’s Manual This equipment complies with the EMC requirements of EN55103-1 and EN55103-2 when operated in an E2 environment in accordance with this manual. IMPORTANT SAFETY NOTICE This unit complies with the safety standard EN60065. The unit shall not be exposed to dripping or splashing and no objects filled with liquids, such as coffee cups, shall be placed on the equipment.

  • Page 10: Fusing Information

    Model DP570 User’s Manual Fusing Information WARNING: To reduce the risk of fire, replace fuses only with the same type and rating. Both units use a universal switching power supply that handles the full range of nominal mains voltages between 90 and 264 VAC and any frequency between 50 Hz and 60 Hz.

  • Page 11: Chapter 1 Introduction

    Until now, the only way to hear the effect of metadata on audio during mastering was to pass the audio through the Dolby Digital encode/decode chain. This procedure could not be achieved in real time and offered an unwieldy interface. The DP570 provides this function in real time by applying metadata parameters to base-band PCM audio.
  • Page 13 Model DP570 User’s Manual Introduction Digital audio input on the DP570 is via four female BNC connectors, allowing a total of eight channels. The emulator section of the DP570 (like the Dolby DP571) requires the input channel assignment to conform to a fixed definition based upon the program configuration selected (as designated in SMPTE 320M).

  • Page 15: Chapter 2 Setting Up

    Model DP570 User’s Manual Chapter 2 Setting Up This chapter covers all connection requirements for the DP570. To quickly begin using the DP570 in your system, see Section 2.4, Quick Start Guide. 2.1 Unpacking and Inspection Before unpacking the unit, inspect the outer carton for shipping damage. If the carton shows damage, inspect the unit in those areas.

  • Page 16: The Back Panel

    You can use the same cable type for the stereo/mono/solo connector by replacing an XLR connector (exchanging the male for a female) to account for the solo bus input to the DP570. Pinout information for this connector is in Section 8.11.

  • Page 17: Figure 2-2 Connections: Signal In And Out

    Model DP570 User’s Manual Setting Up WARNING: Before applying power, check the main fuse using the procedure on page x. Connection Ports The following three figures show the connection ports. Definitions of each port follow each figure. Model DP570 Model DP570...

  • Page 18: Figure 2-3 Connections: Analog Outputs, Gpi/O, And Ethernet

    Figure 2-4 Connections: Metadata In and Out, Serial Remote Figure 2-4 definitions: 1. Metadata 1. Input port for external metadata. This input source is identified as Ext 1 on DP570 menus. 2. Metadata Out. Output port for metadata. Connect to a downstream Dolby E or Dolby Digital encoder.

  • Page 19: Quick Start Guide

    Once you make the physical connections, use the Quick Start Guide to get your system ready to use. Quick Start Guide After powering up, the DP570 displays the current status menu. 2.4.1 Viewing Current Status Menu The factory default is: 5.1+2...

  • Page 20: Setting Up Monitors

    Model DP570 User’s Manual Setting Up To run the remote software, connect a computer to the DP570 via either the RS-485 port on the rear panel, or the RS-232 port on the front panel. For details on installing and using the remote software, see Chapter 7, DolbyRemote 570. To begin remote software operation, on the front panel press Shift once so that the button illuminates, then ←.
  • Page 21 L or R, set center delay to –3 ms. If C=L=R, set center delay to 0 ms. If you set a negative time value for center delay, the DP570 actually sets center delay to 0 and adds corresponding delay time to the left, right, and surround outputs.
  • Page 22 Model DP570 User’s Manual Setting Up To enter the center delay setting using the front-panel buttons: 1. From the Emulator Config menu, press the → button to change the second line to Center Delay, then press Enter. 2. Press the arrow buttons to change the value of the center delay to the setting you want, then press Enter.

  • Page 23: Figure 2-5 Bass Management Menu Options

    Model DP570 User’s Manual Setting Up If you have any other configuration of speakers, you should choose the bass management setting appropriate to your system. Bass management involves selecting options from both the Bass Management and SW Xover Freq menus. For example: •...
  • Page 24 Model DP570 User’s Manual Setting Up To adjust the bass management setting using the front-panel buttons: 1. From the Emulator Config menu, press the → button to change the second-line display to Bass Management, then press Enter. 2. Use the arrow buttons to scroll through the menu. When you find the setting you want to use, press Enter.
  • Page 25 Adjust your amplifiers, self-powered speakers, or mixer, not the DP570. Beware that if the playback level is very high, you may risk damaging your speakers or possibly your hearing. The default test noise level from the DP570 is –20 dBFS to the digital outputs (+4 dBu to the analog monitor outputs).
  • Page 26 Model DP570 User’s Manual Setting Up To generate test noise to the analog outputs using the front-panel buttons: 1. From the Monitor Config menu, press the → button to change the second-line display to Test Noise, then press Enter. 2. Press the arrow buttons to select either Pink (if your bass management setting is none) or Filtered (if you are using any other bass management setting), then press Enter.

  • Page 27: Figure 2-7 Real Time Analyzer (Rta) Display

    When you have set trim levels for all your speakers, return to the Monitor Config menu, scroll to Test Noise, select Off, and press Enter. Calibrating Emulator Output If your DP570 does not include the Cat. No. 548 Analog Option Card, you need to calibrate your speaker system using the emulator outputs. 2-13...
  • Page 28 Model DP570 User’s Manual Setting Up To generate a test noise to the emulator outputs using the front-panel buttons: 1. From the Emulator Config menu, press the → button to change the second-line display to Test Noise, then press Enter.

  • Page 29: Applications

    Model DP570 User’s Manual Chapter 3 Applications The DP570 can be used in many environments. In this chapter we discuss specific examples for: • Content creation • Postproduction • Live broadcast We also provide a section on output signal information.

  • Page 30: Content Creation

    Chapter 7, DolbyRemote 570. Content Creation When creating content for television distribution, you can use the DP570 to: • Downmix (describes a listening environment that has fewer speakers than channels in the audio program, such as a 5.1-channel movie playing on a stereo system) •...

  • Page 31: Setting Dialogue Level

    Applications Using Metadata to Improve a Downmix One of the great advantages of the DP570 is that it allows you to monitor a downmix as you alter specific metadata parameter settings, so you can improve a downmix without altering your source multichannel mix.
  • Page 32 Dialogue Level slider to the setting you want. If the DP570 measures more than a 4 dB difference in the audio clips, reconsider the clips you have chosen, recalling that these clips should represent normal speech level in your content.

  • Page 33: Setting Dynamic Range Control

    As with the remote software-based procedure, if you have more than one audio clip, repeat these steps with the other clips. The DP570 should return similar values for each of the clips. If the variation between clips is 4 dB or less, select a value for the dialogue level parameter within that range that best indicates the average level of the program content.

  • Page 34: Postproduction

    DP571 output. For playback of the recorded tape, the VTR audio outputs are fed to a DP572. The DP572 outputs are then fed to the DP570 for monitoring. This basic setup should work for creation and editing of Dolby E recorded media.

  • Page 35: Replacing One Or More Values Within A Metadata Stream

    Figure 3-3 shows the flow of audio and metadata using the DP570 for audio monitoring and parameter replacement. DP569...

  • Page 36: Live Broadcast

    DP570. A seasoned engineer can save presets for the live events to be produced, and a DP570 with those presets can be sent out with a less-experienced engineer who has only to select the appropriate preset for the event, and is then free to focus on other issues.

  • Page 37: Using External Metadata

    Model DP570 User’s Manual Chapter 4 Unique Features The DP570 provides features not found in other devices. In this chapter, we discuss: • Using external metadata • Internal metadata default settings • User presets • Using Lt/Rt input mode • Channel mapping •...

  • Page 38: Choosing The Source

    If there is no video input, the DP570 generates a default frame based on 1,536 samples at the current audio clock rate, to match Dolby Digital frame rates. The structure imposes some restrictions regarding how external metadata can be used;...

  • Page 39: Figure 4-2 Overriding Individual Parameter Values

    Signal and metadata flow from this example are shown in Figure 4-2. You are using an external metadata stream. The output of the DP570 is feeding a DP571 or DP569. You want to change the compression profile because none was originally included.

  • Page 40: Limitations When Using External Metadata

    Model DP570 User’s Manual Unique Features Example 2—Adding a second program (or changing a program) Signal and metadata flow from this example are shown in Figure 4-3. You receive a 5.1-channel program encoded in Dolby E, and you want to create a stereo-compatible mix for it and re-encode both onto another Dolby E master.

  • Page 41: Troubleshooting Metadata Problems

    Note: If the DP570 is using external metadata and there is a temporary error in the metadata stream, the unit continues to use the last valid metadata values. When the error clears, the DP570 resumes using the stream from the external port.

  • Page 42: User Presets

    The DP570 lets you store a subset of system settings as emulator-only, authoring-only, or combinations that recall both emulator and authoring settings at...

  • Page 43: Emulator-Only

    4.3.1 Emulator-Only You can save a listening environment setup for quick recall easily with the DP570. Once you select the listening parameters, choose a preset number under User Presets, and under Type choose Emulator. Emulator presets display an E after the preset number, so you will be able to recognize them easily as emulator-only presets.

  • Page 44: Using Different Preset Types To Audition Settings

    When you activate the Lt/Rt input mode, the emulator is fed only by the Lt/Rt input, and the DP570 sends a Pro Logic decoded signal to your monitor system. You cannot alter settings for the signal from the Lt/Rt input, but you can use the input to ensure that an Lt/Rt mix is performing as expected.

  • Page 45: Channel Mapping

    Channel mapping changes automatically according to the program configuration, and reflects how the channels will be connected to a Dolby Digital encoder. The DP570 input router enables you to reroute input channels to conform to the automatically assigned channel mapping. See Section 4.6, Input Router Settings, for details.

  • Page 46: Input Router Settings

    Model DP570 User’s Manual Unique Features Input Router Settings The DP570 input router enables you to reroute input channels to conform to the automatically assigned channel mapping. The input router is active even when Emulator Bypass is enabled. The Setup Router window in the DolbyRemote 570 shows the current router settings as well as how each output channel will be identified given the current program configuration.

  • Page 47: Table 4-4 Gpi/O Pin Assignments

    By assigning specific functions to the user-definable pins, you can provide simple control of, or status display from, the DP570. Many functions also allow defining the type and polarity of the input or output logic, thereby allowing you to adapt the DP570 to your existing environment.

  • Page 48: Table 4-5 Functions Available For Gpo Pin Assignment

    Model DP570 User’s Manual Unique Features In this example, when the DP570 enters Emulator Bypass mode the GPO pin goes high. When the unit is no longer in Bypass mode, the pin goes to the low state. Table 4-5 Functions available for GPO Pin Assignment...

  • Page 49: Table 4-6 Assigned Gpo Pins (Not User-Definable)

    If so, this is indicated in Table 4-7. GPI functions that are mutually exclusive are restricted to edge-triggering. In Table 4-7, the column indicates the DP570 state that results when the Active State pin is forced to the logic level indicated, if it is level-triggered.

  • Page 50: Table 4-7 Functions Available For Gpi Pin Assignment

    Model DP570 User’s Manual Unique Features Table 4-7 Functions Available for GPI Pin Assignment Function Polarity Trigger Active State Description Emulator Bypass Either Either Bypass Activates emulator bypass Router Delay Either Either One frame Not implemented Lt/Rt Input Either Either...

  • Page 51: Using An External Shaft Encoder To Control Master Volume

    4.7.2 Solo Input Mode On units with the Cat. No. 548 Analog Option Card installed, the DP570 provides a two-channel analog input that can be routed to the analog outputs. This input is called Solo because the feature was inspired by the need to provide a way to route a standard signal from a mixer (such as the Solo Bus output) into the monitor chain.

  • Page 53: Front-Panel Interface

    The menu system has two independent structures: setup and status. The setup menu lets you configure the DP570 to suit environmental and program requirements, and the status menu displays information regarding the operating status. A complete menu tree is available in Appendix B, Front-Panel Menu Trees.

  • Page 54: The Setup Menu

    Model DP570 User’s Manual Front-Panel Interface Contrast Adjust Press Shift, ↓ to access the contrast control. Use the arrow buttons to adjust the contrast on the LCD. Press Enter or Esc to return to the previous menu. Master Volume Press Shift, Enter to access the master volume control.

  • Page 55: Selecting Parameters

    Model DP570 User’s Manual Front-Panel Interface To return to the setup menu, press Setup. If you engage the remote, to use the front- panel status menu you must first disengage the remote by pressing Shift, ←, then Setup. 5.2.1 Selecting Parameters When line 2 of the display includes a flashing cursor, the parameter displayed on that line is not active.

  • Page 56: Preset/Program Buttons

    Model DP570 User’s Manual Front-Panel Interface Table 5-3 Navigation in Text Entry Menu Command Result ← or → Moves the cursor to the left or right. ↑ Displays the previous character in the character set. ↓ Displays the next character in the character set.

  • Page 57: Listening Mode Selection Buttons

    The front panel allows one-touch access to a range of listening mode options. All the listening mode options apply the active metadata settings to your chosen listening environment emulation. The DP570 enables you to monitor any listening mode while making adjustments to metadata settings. Listening mode selections have no effect on metadata settings, they simply allow you to choose the context in which you evaluate those settings.

  • Page 58: Led Indicators

    Red: No signal or invalid signal. (Check for proper termination.) Note: The DP570 does not require a valid video reference signal in order to produce an output metadata stream. If there is no valid video reference, the output metadata frame rate locks to the audio sample rate at a period of 1536...

  • Page 59: Figure 5-5 Channel Activity Led Indicators

    Model DP570 User’s Manual Front-Panel Interface • Fault Red: A hardware-level fault. Off: No fault. • Error Red: Error condition due to an input signal failure; suggests that the output is invalid (for example, loss of lock on required digital audio inputs, loss of lock on V Ref input, or loss of lock or invalid metadata input).

  • Page 61: Front-Panel Menus

    For a complete list of program configurations, see Table 4-2. 6.1.2 User Presets The DP570 has the capacity to save and recall 32 presets. When the DP570 is shipped from the factory, all the presets are occupied by the default configuration. Creating and Saving Custom Presets To create and save a preset, simply alter as many parameters as you wish from an existing configuration, then save and name your preset.

  • Page 62: Operating Mode

    Model DP570 User’s Manual Front-Panel Menus You can save three different types of presets. Authoring parameter presets include the Dolby E program configuration, all metadata parameters for each program, the external program configuration, and program and parameter source information for each program.

  • Page 63: Program Config

    Model DP570 User’s Manual Front-Panel Menus Emulator Bypass When you enable Emulator Bypass, the front-panel Esc button is illuminated. In this mode, the only settings that affect the output are the router settings. Monitoring options are limited to program selection. If you are using the Lt/Rt input, that signal is sent, without decoding, to the Left and Right emulator outputs.

  • Page 64: Table 6-2 Metadata Params Submenus

    Model DP570 User’s Manual Front-Panel Menus Table 6-2 Metadata Params Submenus Parameter Description Controls dialogue level setting. See Section 3.1.2, Setting Dialogue Dialogue Lev Level, and Appendix A, Metadata, for detail. Designates the number of active channels. The first number is the number of front channels, the second the rear channels.

  • Page 65: Configuration

    Model DP570 User’s Manual Front-Panel Menus Parameter Description Determines if a DC-blocking 3 Hz highpass filter is applied before DC Filter Dolby Digital encoding. Determines if a lowpass filter is applied to the main input channels Lowpass Filt before Dolby Digital encoding.

  • Page 66: Table 6-3 Emulator Config Submenus

    Model DP570 User’s Manual Front-Panel Menus Table 6-3 Emulator Config Submenus Display Select second-line parameter to: Select type or disable. Test Noise Apply a value between –3 and +5 ms. Center Delay Apply a value between 0 and 50 ms.

  • Page 67: System Settings

    • GPO Setup • GPI Setup Unit Name Enter any name you wish for your DP570 using the commands in Table 5-3. The unit name can include any combination of characters and spaces up to 16 characters long Communications Communications includes a submenu for Remote Setup.
  • Page 68 Model DP570 User’s Manual Front-Panel Menus Note: In the Communications menu, pressing Enter saves the current value without any confirmation dialog. GPO Setup For details on the GPI/O port functions, see Section 4.7, Using the GPI/O Port. Output pins 4 and 7–19 are user-defined, as shown in Table 4-4. See Figure 4-4 to identify pin numbers.

  • Page 69: Status Menu

    Model DP570 User’s Manual Front-Panel Menus Status Menu The main Status menu appears when you turn the power on, when you press the Status button combination (Shift, Setup), and when you activate the remote control. At power-up, the status returns to the active configuration at the preceding power- down.
  • Page 70 Model DP570 User’s Manual...

  • Page 71: Dolbyremote 570

    Use of DolbyRemote 570 allows the DP570 to be located in another room or at a distance from the operator. While DolbyRemote 570 is in operation, the Remote LED on the front panel of the DP570 is lit and access to the setup menu via the front-panel buttons is disabled.

  • Page 72: Launching The Application

    8280 to 82fe, even numbers Figure 7-1 Communications Configuration Before you click OK to begin remote software operation of the DP570, on the DP570 front panel press the Shift button once so that the button illuminates, then ←. (Do not hold down Shift while pressing ←.) To disable remote operation and resume using...

  • Page 73: Display Overview

    (See Figure 7-1). If you are using the DolbyRemote 570 application off line and wish to connect to the DP570, click Connect, click the Off Line box to disable that selection, and click OK. If the device and software do not recognize each other, check the communications menu on the front panel of the DP570 and make sure the parameters match those on the screen.
  • Page 74 Model DP570 User’s Manual DolbyRemote 570 Monitor Tab In addition to the controls involved in the essential steps in the Quick Start Guide, the Monitor tab is where you can choose settings for Dim Gain, and enable or disable Sticky Settings and Extended BSI parameters. All settings on the Monitor tab affect your monitoring system only.

  • Page 75: Router

    DolbyRemote 570 GPI/O Tab You can use the GPI/O tab to configure the DP570 for control by simple contact closures and for providing tally signals to monitor operation. The GPI/O setup tab enables you to select the following on a pin-by-pin basis: •...

  • Page 76: User Presets

    Model DP570 User’s Manual DolbyRemote 570 The audio input channels are identified next to each row of option buttons. The router output assignments are identified above each column. The Program display line shows which output channels are associated with each program in the current program configuration.

  • Page 77: Program Configuration

    Model DP570 User’s Manual DolbyRemote 570 • Dialogue Level • Emulator Figure 7-4 Main Window 7.6.1 Program Configuration Click one of the three available option buttons to select the Program Configuration source as Internal, External 1, or External 2. If you select an external source, that source controls the metadata settings. You can still replace metadata settings with internally generated selections if you choose to, using individual parameter selections in the Metadata window.

  • Page 78: Program Select

    Like all metadata parameters, the source for dialogue level can be either external or internal. The dialogue level parameter source must be internal to adjust the value using the DP570. To set the dialogue level parameter, the first and most important step is selecting an audio sample, or “clip,”...

  • Page 79: Emulator

    Dialogue Level slider to the setting you want. If the DP570 measures more than a 4 dB difference in your dialogue samples, reconsider the clips you have chosen, recalling that these clips should represent normal speech level in your content.

  • Page 80: Metadata Window

    You can select the Internal option button for an individual parameter to override that value from the external source with a parameter value from the DP570. For a list of metadata parameters with basic definitions, see Table 6-2. For more detailed information on metadata, see Appendix A, Metadata.

  • Page 81: Audio Processing

    Model DP570 User’s Manual DolbyRemote 570 7.7.2 Audio Processing Parameters on the Audio Processing tab are enabled and disabled by clicking the check box next to the parameter name, except Channel Mode. The availability of modes in the Channel Mode drop-down list box is controlled by the program configuration.

  • Page 82: Dynamic Range

    Model DP570 User’s Manual DolbyRemote 570 7.7.3 Dynamic Range Dynamic Range Control (DRC) profiles are particularly important because the profiles you select are implemented at the consumer level when the consumer chooses to apply DRC. Before you listen to different profiles, it is essential that Dialogue Level is set accurately.

  • Page 83: Bitstream Info

    Model DP570 User’s Manual DolbyRemote 570 7.7.4 Bitstream Info Choices are available via drop-down lists and check boxes. Note that for Mix Level and Room Type information to be carried downstream, Audio Production Info must be enabled. Figure 7-8 Bitstream Info Tab The values for Center Mix Level and Surround Mix Level display on this tab but cannot be set.

  • Page 84: Extended Bsi

    Model DP570 User’s Manual DolbyRemote 570 7.7.5 Extended BSI The setting for Preferred Stereo Downmix designates whether an Lt/Rt or a Lo/Ro downmix is sent to the output of a stereo decoder. Lo/Ro Center Mix Level and Lo/Ro Surround Mix Level control the stereo downmix values in a compliant decoder.

  • Page 85: Monitor Window

    If your DP570 does not include the Cat. No. 548 Analog Option Card, some of the features in the Monitor Window are not available and are grayed out.

  • Page 86: Speakers

    You can mute any individual channel or combination of channels by clicking the Mute button associated with each speaker output. Click the Solo button to mute all but the selected solo channel. The mute and solo functions are not available on the front panel of the DP570. 7-16...

  • Page 87: 7.12 Downmix

    Model DP570 User’s Manual DolbyRemote 570 7.12 Downmix Click any of the available buttons to monitor a downmix or to monitor the full multichannel mix. As with all controls in the Monitor window, selections in this group of controls do not affect the metadata stream or the router output in any way—...

  • Page 89: Chapter 8 Specifications

    Model DP570 User’s Manual Chapter 8 Specifications Electrical Specifications Sampling Rate 48 kHz (±0.1 %), 44.1 kHz (±0.1 %), 32 kHz 30, 29.97, 25, 24, and 23.98 fps Video Frame Rate Router Output Delay 16 samples (min.), optional one frame 11.6 ms (min.), 25 ms, or one frame...

  • Page 90: Front-Panel Rs-232 Remote Connector

    Model DP570 User’s Manual Specifications Front-Panel RS-232 Remote Connector Connection RX asynchronous data out Ground TX asynchronous data in Sense select front panel Digital Audio Inputs (5) BNC unbalanced female connectors compliant with AES-3ID-1995/SMPTE 276M specifications. Two connectors are provided in parallel for the Lt/Rt input to provide loop-through capability.

  • Page 91: Metadata Input Ports (2)

    Model DP570 User’s Manual Specifications Metadata Input Ports (2) 9-pin female D-connector with full-duplex RS-485 protocol running at 115 kbps. Pinout is SMPTE 207M compatible. Connection Shield TX A asynchronous data out – RX B asynchronous data in + Ground...

  • Page 92: Rear-Panel Remote Port

    Model DP570 User’s Manual Specifications Rear-Panel Remote Port 9-pin female D-connector with RS-485 protocol. Pinout is SMPTE 207M electrical/mechanical specification compatible Connection Shield TX B asynchronous data out – RX A asynchronous data in + Ground Ground TX A asynchronous data out + RX B asynchronous data in –...

  • Page 93: 8.10 Multichannel Analog Output

    Model DP570 User’s Manual Specifications 8.10 Multichannel Analog Output 25-pin female D-connector. Uses similar pinout as DA-88 connector except that output channels are referred to speakers instead of channel numbers. Connection Connection Bsr + Out Bsr – Out Bsr Ground Bsl + Out Bsl –...

  • Page 94: 8.12 Mechanical Specifications

    Model DP570 User’s Manual Specifications 8.12 Mechanical Specifications Dimensions 8.8 × 48.3 × 33 cm (3.5 × 19 × 13 inches) Net Weight 4 kg (8.5 lb) approx. Shipping Weight 6 kg (13 lb) approx. Power Requirements 90–264 VAC, 50–60 Hz...

  • Page 95: Metadata Overview

    Model DP570 User’s Manual Appendix A Metadata Metadata provides unprecedented capability for content producers to deliver the highest quality audio to consumers in a range of listening environments. It also provides choices that allow consumers to adjust their settings to best suit their listening environments.
  • Page 96 Model DP570 User’s Manual Appendix A: Metadata Dolby E is a distribution bitstream capable of carrying up to eight channels of encoded audio and metadata. The number of programs ranges from one single program (Program Config: 5.1) to eight individual programs on a single Dolby E stream (Program Config: 8 ×...

  • Page 97: Figure A-1 Metadata Flow From Production To Consumer

    Model DP570 User’s Manual Appendix A: Metadata Figure A-1 shows a 5.1 + 2 Program Config consisting of a 5.1-channel program and a two-channel Secondary Audio Program (SAP). Multichannel Monitor System The Dolby E bitstream contains both the 5.1- and Metadata two-channel programs’...

  • Page 98: Dialogue Level

    Model DP570 User’s Manual Appendix A: Metadata Both types of metadata can be examined, modified, or passed through during encoding. Table A-1 lists the active metadata parameters and indicates if each parameter is informational or control. Table A-1 Metadata Parameters Extended Bitstream Information parameters are in italics.
  • Page 99 Model DP570 User’s Manual Appendix A: Metadata output of the decoder to a preset level. This aids in matching audio volume between program sources. The proper setting of the dialogue level parameter enables the Dynamic Range Control profiles chosen by the content producer to work as intended in less-than-...

  • Page 100: Dynamic Range Control

    Model DP570 User’s Manual Appendix A: Metadata The most important point to remember is that in setting the dialogue level parameter, you are providing your listener with an essential service. For your listeners, setting this level properly means: • The volume level is consistent with other programs.
  • Page 101 Model DP570 User’s Manual Appendix A: Metadata Note: While the use of DRC modes during decoding is a consumer-selectable feature, the dialogue level parameter setting is not. Therefore, the proper setting of the dialogue level parameter is essential before previewing a DRC profile.

  • Page 102: Dynamic Range Control Profiles

    Model DP570 User’s Manual Appendix A: Metadata Dynamic Range Control Profiles Six preset DRC profiles are available to content producers: Film Light, Film Standard, Music Light, Music Standard, Speech, and None. Each is applied in the pattern shown in Figure A-2. All DRC profiles are encoded using a modified B-weighted curve.

  • Page 103: Downmixing

    Model DP570 User’s Manual Appendix A: Metadata • Music Standard Max Boost: 12 dB (below –55 dB) Boost Range: –55 dB to –31 dB (2:1 ratio) Null Band Width: 5 dB (–31 dB to –26 dB) Early Cut Range: –26 dB to –16 dB (2:1 ratio) Cut Range: –16 dB to +4 dB (20:1 ratio)

  • Page 104: Table A-2 Outputs From Various Dolby Digital Signal Processing Equipment

    Model DP570 User’s Manual Appendix A: Metadata It is important to consider the output signals from each piece of equipment that can receive a Dolby Digital program in the home. Table A-2 shows the output types from different equipment. Table A-2 Outputs from Various Dolby Digital Signal Processing Equipment...

  • Page 105: Parameter Definitions

    These previews can be achieved in real time using the DP570 Multichannel Audio Tool. Parameter Definitions Metadata parameters include: •...

  • Page 106: Universal Parameters

    Model DP570 User’s Manual Appendix A: Metadata A.5.1 Universal Parameters Universal parameters are present in all Dolby Digital encoders and decoders. Dialogue Level The dialogue level parameter is discussed in Section A.2, Dialogue Level. Channel Mode This parameter (also known as audio coding mode) indicates the active channels within the encoded bitstream and affects both the encoder and consumer decoder.
  • Page 107 Model DP570 User’s Manual Appendix A: Metadata LFE Channel Setting Enable Disable Bitstream Mode This parameter describes the audio service contained within the Dolby Digital bitstream. A complete audio program may consist of a main audio service (a complete mix of all the program audio), an associated audio service comprising a complete mix, or one main service combined with an associated service.
  • Page 108 Model DP570 User’s Manual Appendix A: Metadata Bitstream Mode Definition Setting When the E Service appears in the bitstream, it is given priority in the decoder and the Main Service is muted. This is a single channel service intended to be decoded and mixed to the Assc.
  • Page 109 Model DP570 User’s Manual Appendix A: Metadata Center Downmix Level When the encoded audio has three front channels (L, C, R), but the consumer has only left and right front speakers, this parameter indicates the nominal downmix level for the center channel with respect to the left and right channels. Dolby Digital decoders use this parameter during downmixing in Lo/Ro mode when Extended BSI parameters are not active.
  • Page 110 Model DP570 User’s Manual Appendix A: Metadata Dolby Surround Mode This parameter indicates to a Dolby Digital decoding product that also contains a Dolby Pro Logic decoder (for example a 5.1-channel amplifier) whether the two- channel encoded bitstream contains a Dolby Surround (Lt/Rt) program that requires Pro Logic decoding.
  • Page 111 Model DP570 User’s Manual Appendix A: Metadata Room Type The Room Type parameter describes the equalization used during the final mixing session at the studio or on the dubbing stage. A Large room is a dubbing stage with the industry standard X-curve equalization; a Small room has flat equalization. This parameter allows an amplifier to set the same equalization as heard in the final mixing environment.
  • Page 112 Model DP570 User’s Manual Appendix A: Metadata Note: The parameters DC Filter, Lowpass Filter, LFE Lowpass Filter, Surround 3 dB Attenuation, and Surround Phase Shift appear after the Extended BSI parameters on Dolby E and Dolby Digital equipment menus. DC Filter This parameter determines whether a DC blocking 3 Hz highpass filter is applied to the main input channels of a Dolby Digital encoder prior to encoding.

  • Page 113: Extended Bitstream Information Parameters

    A.5.2 Extended Bitstream Information Parameters In response to requests from content producers, Dolby Laboratories recently modified the definitions of several metadata parameters from their original definition as described in ATSC document A/52. The original parameters were rarely, if ever used.
  • Page 114 Model DP570 User’s Manual Appendix A: Metadata Products that allow emulation of the effects of metadata, such as the DP570, normally have a feature that allows emulation of a new (or compliant) decoder or a legacy decoder. Preferred Stereo Downmix Mode This parameter allows the producer to select either the Lt/ Rt or the Lo/Ro downmix in a consumer decoder that has stereo outputs.
  • Page 115 Model DP570 User’s Manual Appendix A: Metadata Lt/Rt Surround Mix Level This parameter indicates the level shift applied to the surround channels when downmixing to an Lt/Rt output. Its operation is similar to the surround downmix level in the universal metadata.

  • Page 116: Metadata Combinations

    Model DP570 User’s Manual Appendix A: Metadata Lo/Ro Surround Mix Level This parameter indicates the level shift applied to the surround channels when downmixing to a Lo/Ro output. When Extended BSI parameters are active, this parameter is used, and the Surround Mix Level parameter in the universal parameters is not.

  • Page 117: Table A-3 Examples Of Possible Metadata Settings

    Model DP570 User’s Manual Appendix A: Metadata Note: These parameter settings are provided as examples to demonstrate that different settings can be saved, named, and brought up as needed for quick use in different situations. The settings are not recommendations, but could provide a baseline starting point from which to create your own metadata values.
  • Page 118 Model DP570 User’s Manual Appendix A: Metadata Extended Bitstream Information parameters are in italics. Parameter Action Film Drama Local News Music (5.0) Live (Lt/Rt) (5.1) (Mono) Sporting Events (5.0) A/D Converter Standard Standard Standard Standard Standard Type DC Filter Enable...

  • Page 119: Appendix B Front-Panel Menu Trees

    Model DP570 User’s Manual Appendix B Front-Panel Menu Trees Setup Menu Structure Top Level Menu Node Middle Level Menu Node Parameter Selection Menu Node Text Entry Menu Node Confirmation Menu Node Special Menu Node Pop-Up Menu Node Indicates direction of movement through menu hierarchy,...
  • Page 120 Model DP570 User’s Manual Appendix B: Front-Panel Menu Trees DP570 Unit Setup Menu DP570 Unit Setup Unit Setup Unit Setup DP570 Unit Setup DP570 Unit Setup DP570 Unit Setup DP570 DP570 DP570 Unit Setup Program Select User Presets Operating Mode...
  • Page 121 Model DP570 User’s Manual Appendix B: Front-Panel Menu Trees User Presets Menu User Presets User Presets Recall Preset Save Preset Recall Preset Save Preset Save Preset 01X Preset Name Preset 01 Preset 32 Enter Type Enter Type Enter Type Authoring...
  • Page 122 Model DP570 User’s Manual Appendix B: Front-Panel Menu Trees Metadata Params Setup Menu Parameter Select Submenu Order Dialogue Lev Channel Mode Metadata Params Metadata Params LFE Channel Dialogue Lev Srnd Ph Shift Bitstrm Mode Line Mode Pro RF Mode Pro...
  • Page 123 Model DP570 User’s Manual Appendix B: Front-Panel Menu Trees Router Configuration Menu from Configuration Menu Router Config Router Config Router Config Router Presets Router Out 1 Router Out 8 Router Presets Router Presets Router Out 1 Recall Router Save Router...
  • Page 124 Model DP570 User’s Manual Appendix B: Front-Panel Menu Trees Monitor Configuration Menu from Configuration Menu Monitor Config Monitor Config Monitor Config Monitor Config Monitor Config Master Trim Dim Gain Speaker Select Speaker Trims Test Noise Dim Gain Speaker Select Test Noise...
  • Page 125 Model DP570 User’s Manual Appendix B: Front-Panel Menu Trees System Settings Setup Menu System Settings System Settings System Settings System Settings Communications GPI Setup GPO Setup Unit Name Unit Name communications Name submenu GPI Setup GPO Setup GPI Setup GPO Setup...
  • Page 126 Model DP570 User’s Manual Appendix B: Front-Panel Menu Trees DP570 Status Menu 5.1 + 2 Internal Metadata Params Preset Status Video Ref Audio Input Prog 1 3/2L 27 ENTER to View None 29.97 fps Locked 48khz to Metadata Params Status Menu...
  • Page 127 Model DP570 User’s Manual Appendix B: Front-Panel Menu Trees Metadata Params Status Menu Metadata Params Status Menu Order Program Descrip Dialogue Lev Channel Mode LFE Channel Program Descrip Dialogue Lev Srnd Ph Shift Bitstrm Mode Prog 1 -27 dB Disable...

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