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Manual Dolby Laboratories DP564

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  • Dolby Laboratories DP564 - page 1

    Model DP564 Multichannel Audio Decoder User’s Manual Issue 1 Part Number 91830 ...

  • Dolby Laboratories DP564 - page 2

    DP564 Multichannel Audio Decod er ii Dolby Laboratories, Inc. Corporate Headquarters Dolby Laboratories, Inc. 100 Potrero Avenue San Francisco, CA 94103-4813 Telephone 415-558-0200 Fax 415-863-1373 www.dolby.com European Headquarters Dolby Laboratories, Inc. Wootton Bassett Wiltshire, SN4 8QJ, England Telephone (44) 1793-842100 Fax (44) 1793-842101 ...

  • Dolby Laboratories DP564 - page 3

    DP564 Multichannel Audio Decod er iii Table of Contents List of Figures ............................................................................................................................ vi List of Tables .............................................................................................................................. v i Regu ...

  • Dolby Laboratories DP564 - page 4

    DP564 Multichannel Audio Decod er iv 4.4 Setup Menu .............................................................................................. 4-6 4.4.1 Operating Mode ........................................................................... 4-7 4.4.2 Monitor Control ........................................................................... ...

  • Dolby Laboratories DP564 - page 5

    DP564 Multichannel Audio Decod er v Chapter 8 Streaming Server and Remote Software ............................................ 8-1 8.1 DolbyRemote 564 .................................................................................... 8-1 8.2 Hardware Connection .............................................................................. 8-1 8. ...

  • Dolby Laboratories DP564 - page 6

    DP564 Multichannel Audio Decod er vi List of Figures Figure 1-1 DP564 System Block Diagram .................................................................................. 1-3 Figure 2-1 Connection Ports for Digital Signals ......................................................................... 2-1 Figure 2-2 Connection Ports for Optical , Ethe ...

  • Dolby Laboratories DP564 - page 7

    DP564 Multichannel Audio Decod er vii Regulatory Notices and Fusing Information FCC This equipment has been tested and found to comp ly with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limit s are designed to provide reasonable protection against harmful interference when the equipment is ope rated in a comm ...

  • Dolby Laboratories DP564 - page 8

    DP564 Multichannel Audio Decod er viii EU This equipment complies with the EMC requirements of EN55103 -1 and EN5510 3-2 when op erated in an E2 environment in accorda nce with this manual. IMPORTANT SAFETY NOTICE This unit complies with the safety sta ndard EN60065. The unit shall not be exposed to drippi ng or splashing and no objects fill ed wit ...

  • Dolby Laboratories DP564 - page 9

    DP564 Multichannel Audio Decod er ix Fusing Information WARNING: To reduce the risk of fire, replace fuses only with the same type and rating. The DP564 uses a universal sw itching power supply that handles the full range of nominal mains voltages between 90 and 264 VAC and any frequency between 50 and 60 Hz. Main Fuse The main fuse rating is: T 1A ...

  • Dolby Laboratories DP564 - page 10

    Virtual Dolb y Techn ologies Tes t DVD Tr ack Lis t iv ...

  • Dolby Laboratories DP564 - page 11

    DP564 Multichannel Audio Decod er 1-1 Chapter 1 Introduction The DP564 Multichannel Audio Decoder gi ves studio professi onals unparalleled ability to monitor different audio programs in a variety of listening m odes. Critical monitoring is essential to ensure that the highest quality audio reaches your listeners at home. The DP564 Multichannel Aud ...

  • Dolby Laboratories DP564 - page 12

    DP564 Multichannel Audio Decod er Introduction 1-2 Note: The processing sequence is not identical to th at of a consumer decoder. To efficiently deliver all the available features, downm ixi ng is separated from the decoding block. Input S elect AES1 (AES3 BNC) AES2 (AES3 BNC) Optical (TOSLINK ) Strea ming (RTP 1 00BASE- T) Dolby Digital Decoder Do ...

  • Dolby Laboratories DP564 - page 13

    DP564 Multichannel Audio Decod er Introduction 1-3 Figure 1-1 DP564 System Block Diagram The 2-U rack-mount unit features multiple inpu ts including two AES3 inputs, a Toslink optical input, and an Ethernet port for RTP-streaming Dolby Digital audio. The inputs are easily selected with dedicated front-panel buttons. The front panel also incorporate ...

  • Dolby Laboratories DP564 - page 14

    Virtual Dolb y Techn ologies Tes t DVD Tr ack Lis t iv ...

  • Dolby Laboratories DP564 - page 15

    DP564 Multichannel Audio Decod er 2-1 Chapter 2 Installation This chapter covers the physical conn ections necessary to operate the DP564. 2.1 Mounting The DP564 occupies 2U of rack space. The unit operates at ambient temperatures up to 122° F (50° C) and vents from front to rear. Caution: Do not mount the DP564 directly above heat-generating equ ...

  • Dolby Laboratories DP564 - page 16

    DP564 Multichannel Audio Decod er Installation 2-2 signal on to another unit; if pass-through is not n ecessary, this connector should be fitted with a 75-ohm term inator. The Digital In connectors, AES 1 and AES 2 , can receive both Dolby ® Digital and PCM signals. The decoder recognizes each signal type and processes the signal appropriately. Di ...

  • Dolby Laboratories DP564 - page 17

    DP564 Multichannel Audio Decod er Installation 2-3 2.2.3 Analog Outputs The +4 dBu balanced Analog Audio Outpu ts connect directly to your m o nitoring system. Each connector is labeled acc ording to the channe l signal it sends. If your system includes a single sp eaker for Back Surround, use only the Bsl output, and leave the Bsr output open. 2.2 ...

  • Dolby Laboratories DP564 - page 18

    Virtual Dolb y Techn ologies Tes t DVD Tr ack Lis t iv ...

  • Dolby Laboratories DP564 - page 19

    DP564 Multichannel Audio Decod er 3-1 Chapter 3 Front-Panel Controls Every function of the DP564, ex cept control of streaming a udio, is accessible using the front-panel buttons in combination w ith the information on the display screen. This chapter covers • Front-panel layout • Button functions • LED indicators • The RS-232 connection St ...

  • Dolby Laboratories DP564 - page 20

    DP564 Multichannel Audio Decod er Front-Panel Controls 3-2 one-touch recall of a complete se t of parameter settings prev iously stored as a preset. Output-level controls set the volume level for your listening environm ent. Detailed explanations of each button function follow. 3.2 Button Functions Each button on the front panel controls a function ...

  • Dolby Laboratories DP564 - page 21

    DP564 Multichannel Audio Decod er Front-Panel Controls 3-3 menu. If you are in a setup menu, Status changes the display to a status menu. If you are in a setup menu, Setup brings up the top-level setup menu. If you are in a status menu, Status brings up the main status m enu. ▲ moves the item selection in the display to the next item up. In the s ...

  • Dolby Laboratories DP564 - page 22

    DP564 Multichannel Audio Decod er Front-Panel Controls 3-4 Decode Use the Decode buttons to select a speci fic surround-decoding mode. Note: Dolby Digital decoding is applied wh enever a Dolby Digital signal is received. The Decode buttons off er additional processing options. EX activates Dolby Digital Surround EX ™ decoding. It is available onl ...

  • Dolby Laboratories DP564 - page 23

    DP564 Multichannel Audio Decod er Front-Panel Controls 3-5 3.2.3 Input Use the Input buttons to select the source for th e input signal. Only one of these buttons is lit at a time, i ndicating the selected source: AES1 , AES2 , Optical , or Streaming . If the selected source rec eives an invalid signal, the Error LED turns red. 3.2.4 Preset Preset ...

  • Dolby Laboratories DP564 - page 24

    DP564 Multichannel Audio Decod er Front-Panel Controls 3-6 3.2.6 Special Button Functions Under certain conditions, you may need to reset the DP564. Table 3-1 shows the button combinations to use in those cases. Table 3-1 Special Button Functions Function Action; Result Hardware Reset Press Shift + Esc + ► simultaneously; the DP564 reboots. Firmw ...

  • Dolby Laboratories DP564 - page 25

    DP564 Multichannel Audio Decod er Front-Panel Controls 3-7 3.4 RS-232 Connection The Remote RS-232 connection port can be used to c onnect for software updates, or to a computer running DolbyRemote 564. The DolbyRemote 564 application is far m ore efficient, however, when connected via the 100 BASE-T port. For details, see Chapter 8, Streaming Serv ...

  • Dolby Laboratories DP564 - page 26

    Virtual Dolb y Techn ologies Tes t DVD Tr ack Lis t iv ...

  • Dolby Laboratories DP564 - page 27

    DP564 Multichannel Audio Decod er 4-1 Chapter 4 Menus Much of the versatility and power of th e DP564 lies in its menu structure. This chapter covers: • Menu basics • Hot-key function • Status menu • Setup menu 4.1 Menu Basics The screen shows information on the current operating status via the status menu, and lets you adjust operational s ...

  • Dolby Laboratories DP564 - page 28

    DP564 Multichannel Audio Decod er Menus 4-2 4.2 Hot-Key Functions Certain front-panel buttons activate a special function when you press and hold the button for two seconds. We refer to that function as the hot-key func tion . No matter what menu you are viewing, there ar e three front-panel buttons that display the setup menu for that function whe ...

  • Dolby Laboratories DP564 - page 29

    DP564 Multichannel Audio Decod er Menus 4-3 If the selected input is receiving a valid Dolby ® Digital signal, the display conveys important information about the input str eam and the decoding status, as shown in Figure 4-3. Dolby Digital 48kHz Data Rate 448 Chan Mode 3/2L 00:00:00:00 29ND PL EX Preset 1 EB DH Dialog Level -27 Figure 4-3 Main Sta ...

  • Dolby Laboratories DP564 - page 30

    DP564 Multichannel Audio Decod er Menus 4-4 PCM Audio 44.1 kHz 20 Bit Consumer Preset 1 Figure 4-4 Main Status Menu with a Valid PCM Input The space above the line displays the type of input, sam ple rate, bit depth, and mode ( Professional or Consumer ) of the stream. The DP564 accepts inputs up to 96 kHz, downsampling higher sample rates for proc ...

  • Dolby Laboratories DP564 - page 31

    DP564 Multichannel Audio Decod er Menus 4-5 4.3.6 Input Status The input status menu identifies the sele cted input in the m enu title line. When a valid signal is present, inform ati on displays for signal lock, sample rate, signal type, and Emphasis , Bit-0 , and Bit-1 informational bits. Emphasis reflects the setting of the channel status emphas ...

  • Dolby Laboratories DP564 - page 32

    DP564 Multichannel Audio Decod er Menus 4-6 4.3.8 Timecode Status The Timecode Status menu includes: • A large timecode readout • Frame rate • Timestamp delay word The main status display also shows tim ecode information, according to settings in the Timecode Display setup menu. 4.3.9 Error Statistics When an error occurs, the front-panel Err ...

  • Dolby Laboratories DP564 - page 33

    DP564 Multichannel Audio Decod er Menus 4-7 Unit Setup Operating Mode Monitor Control User Presets I/O Control Monitor Configuration System Settings Figure 4-5 Main Setup Menu Scroll to select a menu item and press Enter or ► to display that item ’s submenu. To change a parameter value, enter the parameter adjustment menu, and press ▲ or ▼ ...

  • Dolby Laboratories DP564 - page 34

    DP564 Multichannel Audio Decod er Menus 4-8 Detection Detection offers two options: Normal and Silent Switch . In Normal mode, an input that switches from PCM to Dolby Digital (if, for example, the complete bitstream inf ormation carried in a Dolby Digital sig nal is interrupted for some reason) may produce a short burs t of noise at the transition ...

  • Dolby Laboratories DP564 - page 35

    DP564 Multichannel Audio Decod er Menus 4-9 • Speaker Mutes • LFE Mon Mode Pro Logic Pro Logic is set either to Manual or Automatic . In Automatic , the DP564 applies Pro Logic ® decoding according to the setting of the Dolby Srnd metadata parameter in a Dolby Digital 2/0 signal. Y ou can use the front-panel buttons to apply Pro Logic II as so ...

  • Dolby Laboratories DP564 - page 36

    DP564 Multichannel Audio Decod er Menus 4-10 Pro Logic II The DP564 supports four Pro Logic II modes: Movie , Music , Pro Logic , and Matrix . Additional menus under Pro Logic II give you control over settings for Panorama , Dimension , and Center Width , which offer a variety of settings activated when in Music mode. Movie mode is the standard se ...

  • Dolby Laboratories DP564 - page 37

    DP564 Multichannel Audio Decod er Menus 4-11 Karaoke The DP564 can process karaoke informati on in a Dolby Digital bitstream. In a karaoke bitstream, the standard Center, Left Surround, and Right Surround channels are replaced with a music channel and tw o vocal channels. Karaoke processing may only be applied to a karaoke bitstream. The Karaoke me ...

  • Dolby Laboratories DP564 - page 38

    DP564 Multichannel Audio Decod er Menus 4-12 4.4.3 User Presets The DP564 stores up to 32 presets. Each pr eset includes all ac tive settings. If you recall a preset, then change one param eter, the configuration with the one changed parameter is not stored unless you save it as a separate preset. Presets 29–32 are reserved by the factor y config ...

  • Dolby Laboratories DP564 - page 39

    DP564 Multichannel Audio Decod er Menus 4-13 viewing, but if you activat e any preset using the User Presets menu, the display goes to the main stat us menu upon activation. Save Preset Saving a preset stores every active setting. Be sure you have all parameters set correctly, then enter the Save Preset m enu and choose the preset number you want t ...

  • Dolby Laboratories DP564 - page 40

    DP564 Multichannel Audio Decod er Menus 4-14 Clock Use the Clock menu to select the clock source for the DP564. Digital In locks the system to the currently selected digital input (AES1, AES2 or Optical). Ref In locks the system to the reference inpu t ( AES Ref ) 1 . When locking to the reference input, sample rate converters are available if the ...

  • Dolby Laboratories DP564 - page 41

    DP564 Multichannel Audio Decod er Menus 4-15 4.4.5 Monitor Configuration The Monitor Configuration menu is used primarily to configure your listening environment for accurate monitoring of all content. For details on how to set up your listening room, see Chapter 5, Li stening Room Calibration, which covers Digital Ref , Dim Gain , Channel Trims , ...

  • Dolby Laboratories DP564 - page 42

    DP564 Multichannel Audio Decod er Menus 4-16 To enter text: 1. Press ► to select Del , then Enter to delete the text to the lef t of the flashing cursor. When the letter characters appear uppercase, ↓ ch anges them to lowercase. From the lowercase display, ↑ changes the letters to uppercase. Space inserts a single character space, Clear erase ...

  • Dolby Laboratories DP564 - page 43

    DP564 Multichannel Audio Decod er Menus 4-17 The first line on this menu is IP Config , which lets you choose Manual or Automatic configuration. If you choose Automatic , the DP564 uses DHCP protocol to request an IP addr ess from the network server. Note: Dynamic DNS updates must be enabled at the DHCP server for the DP564 automatic mode to regist ...

  • Dolby Laboratories DP564 - page 44

    Virtual Dolb y Techn ologies Tes t DVD Tr ack Lis t iv ...

  • Dolby Laboratories DP564 - page 45

    DP564 Multichannel Audio Decod er 5-1 Chapter 5 Listening Room Calibration Setting up your listening environment is a crucial elem ent in enabling you to properly evaluate content. Follow the procedures in this chapter caref ully. You should only need to do this once for each monitor sy stem or room; however, quick checks are advised before each se ...

  • Dolby Laboratories DP564 - page 46

    DP564 Multichannel Audio Decod er Listening Room Calibration 5-2 80 Hz , but if any of those speakers is particularly small, choose the highest frequency, 120 Hz . This setting not only produces better response from your system, but also protects small speakers from damage. In a system that includes a subwoofer, with all speakers set to Large , the ...

  • Dolby Laboratories DP564 - page 47

    DP564 Multichannel Audio Decod er Listening Room Calibration 5-3 Note: Left and Right speakers should be equi distant from the reference listening position. If they are not, ad just the speaker positions. In the calculations that f ollow: L = the distance from the Left speaker to the reference listen ing position C = the distance from the Center sp ...

  • Dolby Laboratories DP564 - page 48

    DP564 Multichannel Audio Decod er Listening Room Calibration 5-4 3. Use the ▲▼ buttons to change the setting to match the value you calculated, then press Enter . 5.2.3 Back Surround Delay To calculate the setting for Back Surround delay: C – Bs = setting in ms for Surround delay To enter the Surround delay setting: 1. On the Monitor Configur ...

  • Dolby Laboratories DP564 - page 49

    DP564 Multichannel Audio Decod er Listening Room Calibration 5-5 To enter the Pro Logic delay setting: 1. On the Monitor Configuration menu, select Speaker Delays , then press Enter . 2. Select Pro Logic and press Enter to go to the Pro Logic Delay menu. 3. Use the ▲▼ buttons to change the setting to match the value you calculated, then press E ...

  • Dolby Laboratories DP564 - page 50

    DP564 Multichannel Audio Decod er Listening Room Calibration 5-6 For film work, test noise at reference level should produce an SPL of 85 dBC for each of the main front channels (Left, Ce nter, Right) and 82 dBC for each Surround channel . The lower Surround level is sp ecific to film-style m ixing rooms. For television work, test noi se at referen ...

  • Dolby Laboratories DP564 - page 51

    DP564 Multichannel Audio Decod er Listening Room Calibration 5-7 Measuring SPL Before generating test noise, press Ref to check that the master volum e level is set to 0 dB. Master volume should remain at 0 dB while you set channel trim levels. The Ref button remains lit as long as th e master volume level is s et to 0 dB. If the Ref light turns of ...

  • Dolby Laboratories DP564 - page 52

    DP564 Multichannel Audio Decod er Listening Room Calibration 5-8 3. Keep the SPL meter in this position. Ma ke sure that the m eter is aimed at the center speaker as you take readings for the Left, Center, and Right speakers. 4. To take the SPL readings for the Left Surround or Right Surround speakers, keep the meter at the same angle and position ...

  • Dolby Laboratories DP564 - page 53

    DP564 Multichannel Audio Decod er Listening Room Calibration 5-9 For future reference, if you calibrate the subwoofer with an RTA, measure the calibrated level with an SPL meter and note the meter reading for the proper calibration. Use this measured value for quick future checks of th e system calibration. When you have set trim levels fo r all ch ...

  • Dolby Laboratories DP564 - page 54

    Virtual Dolb y Techn ologies Tes t DVD Tr ack Lis t iv ...

  • Dolby Laboratories DP564 - page 55

    DP564 Multichannel Audio Decod er 6-1 Chapter 6 Operating Modes The DP564 offers unique control and mon itoring options. This chapter covers: • Monitoring modes • Hardware remote control 6.1 Monitoring Modes The front panel provides eas y access to different monito ring modes. Control options include: • Downmix • Decoding • Listening • ...

  • Dolby Laboratories DP564 - page 56

    DP564 Multichannel Audio Decod er Operating Modes 6-2 Mono can only be activated when one of th e two-channel downmixes is in use, or when the input is PCM or a 2/0 Dolby Di gital program. We recommend that program mixers designate Lo/Ro as the source for mono downmixes. A m ono output of the Lt/Rt mix is possible, however. Both Lo/Ro and Lt/Rt out ...

  • Dolby Laboratories DP564 - page 57

    DP564 Multichannel Audio Decod er Operating Modes 6-3 6.1.3 Listening The Listening section provides the ability to emul ate different listening environm ents at a single touch. • Full uses all speaker outputs. The signals are routed to the speakers directly. • 3 Stereo routes the Ls and Rs signals to Left and Right outputs, respectively. • P ...

  • Dolby Laboratories DP564 - page 58

    DP564 Multichannel Audio Decod er Operating Modes 6-4 6.2.1 Cat. No. 549 Configuration The Cat. No. 549 Config menu allows you to customize functions controlled by the Cat. No. 549 GPIO Controller. The in itial display identif ies which button is selected for configuration, and the active settings for that button. An example is shown in Figure 6-1. ...

  • Dolby Laboratories DP564 - page 59

    DP564 Multichannel Audio Decod er Operating Modes 6-5 Table 6-1 Cat. No. 549 Default Button and LED Funct ions DP564 GPIO Pin Assignments Button Number Default Function Sw itc h LED 1 AES Input 1 GPI pin 23 GPO pin 4 2 AES Input 2 GPI pin 24 GPO pin 7 3 Optical Input 3 GPI pin 25 GPO pin 8 4 Pro Logic II GPI pin 26 GPO pin 9 5 Pro Logic GPI pin 27 ...

  • Dolby Laboratories DP564 - page 60

    DP564 Multichannel Audio Decod er Operating Modes 6-6 3. Choose the appropriate assignments, and press Ente r to activate each change. 4. When you have configured the pin, press Esc to return to the GPI/O Pin Config menu, and repeat steps 1–3 as needed to configure other pins on the GPI/O Controller. Each pin is designated as an input or output p ...

  • Dolby Laboratories DP564 - page 61

    DP564 Multichannel Audio Decod er Operating Modes 6-7 Table 6-3 Functions Available for Assignment to Input Pins Bypass Streaming Input 4 Preset 1 Stereo Downmix Preset 2 Lt/Rt Downmix Preset 3 Mono Downmix Preset 4 Pro Logic II Preset 5 Pro Logic Preset 6 Surround EX Preset 7 Full Preset 8 3 Stereo Preset 9 Phantom Center Preset 10 Custom Preset 1 ...

  • Dolby Laboratories DP564 - page 62

    DP564 Multichannel Audio Decod er Operating Modes 6-8 Table 6-4 Functions Available for Assignment to Output Pins Error AES Input 2 External AES Ref Optical Input 3 Remote Control Streaming Input 4 Dolby Digital Input Stereo Downmix Bypass Lt/Rt Downmix Preset 1 Mono Downmix Preset 2 Pro Logic II Preset 3 Pro Logic Preset 4 Surround EX Preset 5 Ful ...

  • Dolby Laboratories DP564 - page 63

    DP564 Multichannel Audio Decod er 7-1 Chapter 7 Using New Features This chapter is for users of the DP562, the predecessor to this model. It provides a quick look at the new features in the DP 564, and a quick reference on how to access those features, including: • Multiple inputs • Expanded preset storage • Enhanced monitoring control • De ...

  • Dolby Laboratories DP564 - page 64

    DP564 Multichannel Audio Decod er Using New Features 7-2 7.3 Enhanced Monitoring Control You have enhanced control over monitoring level and output control when using the DP564. The Master Volume knob and the Ref button make this adjustment quick and easy, and if you need to mute one or more channel outputs, you can do so using the menu screen as d ...

  • Dolby Laboratories DP564 - page 65

    DP564 Multichannel Audio Decod er Using New Features 7-3 7.9 Timecode Output The DP564 extracts the timecode from a Dol by Digital stream if timecode is present. This is used to generate a matching linear timecode output signal from the rear-panel LTC connection. This can be used to synchr onize external equipment, such as a videotape machine, to f ...

  • Dolby Laboratories DP564 - page 66

    Virtual Dolb y Techn ologies Tes t DVD Tr ack Lis t iv ...

  • Dolby Laboratories DP564 - page 67

    DP564 Multichannel Audio Decod er 8-1 Chapter 8 Streaming Server and Remote Software To activate the streaming audio input or to use the DolbyRemote 564 software by network connection, you need to configure the DP564 using the Network Settings menu as described starting on page 4-16. 8.1 DolbyRemote 564 DolbyRemote 564 provides quick access to vi r ...

  • Dolby Laboratories DP564 - page 68

    DP564 Multichannel Audio Decod er Streaming Server and Remote Software 8-2 CD-ROM Installation To install DolbyRemote 564 on your computer: 1. Place the CD-ROM in the PC. 2. The installation program should run au tomatically. If nothing happens, open the Run prompt (click the Start menu, then Run ) and type d:setup.exe (where d is the letter of yo ...

  • Dolby Laboratories DP564 - page 69

    DP564 Multichannel Audio Decod er Streaming Server and Remote Software 8-3 8.6 Streaming The Streaming tab enables you to select and c ontrol the streaming input. This functionality includes: • Server location • File selection • Play, Pause, and Stop control • Slide bar control for locating s tarting positions within a file • +10 Seconds ...

  • Dolby Laboratories DP564 - page 70

    DP564 Multichannel Audio Decod er Streaming Server and Remote Software 8-4 8.7 Dolby Streaming Server The Dolby Streaming Server gives functiona lity to the com puter where you store Dolby Digital files you want to decode via the streaming input on your DP564. Note: The DP564 only recognizes f iles that are stored in th e directory defined when you ...

  • Dolby Laboratories DP564 - page 71

    DP564 Multichannel Audio Decod er A-1 Appendix A Metadata Note: This appendix was originally written for users of Dolby ® E products that assign metadata parameter values. The DP564, as a decoder, sim ply uses the metadata parameters included in a Dolby Dig ital bi tstream. However, the detailed explanation of metadata co ncepts and parameters may ...

  • Dolby Laboratories DP564 - page 72

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-2 decoder processes the metadata stream ac cording to parameters set by the program creator, as well as cer tain settings for bass m anagement and dynamic range that are chosen by the consumer to reflect thei r specific home theater equipm ent and environmental conditions. Dolby E is a distri ...

  • Dolby Laboratories DP564 - page 73

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-3 transparent to consumers, certain parameters affect the output of a home decoder, like when downmixing for a specific speaker configuration, or when the consumer chooses Dynamic Range Control to avoi d disturbing family and neighbors. Figure A-1 shows a 5.1 + 2 Program Config consisting of ...

  • Dolby Laboratories DP564 - page 74

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-4 Both types of metadata can be exam ined, modified, or passed through during encoding. Table A-1 lists the active metada ta param eters and indicates if each parameter is inform ational or control. Table A-1 Metadata Parameters Extended Bitstream Information parameters are in italics. Metada ...

  • Dolby Laboratories DP564 - page 75

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-5 When received at the con sumer’s Dolby Digital decoder, this param eter setting determines the level shif t in the decoder that sets, or normalizes, the average audio output of the decoder to a preset level. This aids in matching audio volume between program sources. The proper setting of ...

  • Dolby Laboratories DP564 - page 76

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-6 The most important point to remember is th at in setting the dialogue level parameter, you are providing your listener with an esse ntial service. For y our listeners, setting this level properly means: • The volume level is consiste nt with other programs. • The DRC profiles you make a ...

  • Dolby Laboratories DP564 - page 77

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-7 Note: While the use of DRC modes during decoding is a consumer-selectable feature, the dialogue level parameter se tting is not. Therefore, the proper setting of the dialogue le vel parameter is essential before previewing a DRC profile. Line Mode Line Mode offers these features: • Low-le ...

  • Dolby Laboratories DP564 - page 78

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-8 Dynamic Range Control Profiles Six preset DRC profiles are available to content producer s: 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. Input Lev ...

  • Dolby Laboratories DP564 - page 79

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-9 • 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) • Speech Max Boost: 15 dB (below –50 dB) Boost Rang ...

  • Dolby Laboratories DP564 - page 80

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-10 It is important to consider the output signals from each piece of equipment that can receive a Dolby Digital program in the hom e. Table A-2 shows the output types from different equipment. Table A-2 Outputs from Various Dolby Digital Signal Processin g Eq uipment Output Equipment Digital ...

  • Dolby Laboratories DP564 - page 81

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-11 In each of these devices, the analog stereo output is one of two different stereo downmixes. One type is a stereo-compatib le Dolby Surround downmix (also called Pro Logic ® , left-total/rig ht-total, or Lt/Rt) of the multichanne l source program that is suitable for Dolby Surround Pro Lo ...

  • Dolby Laboratories DP564 - page 82

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-12 Extended BSI parameters translate seamlessl y to decoders that read only universal parameters. A.5.1 Universal Parameters Universal parameters are present in a ll Dolby Digital encoders and decoders. Dialogue Level The dialogue level parameter is discu ssed in Section A.2, Dialogue Level. ...

  • Dolby Laboratories DP564 - page 83

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-13 LFE Channel The status of the LFE Channel pa rameter indicates to a Dolby Digita l encoder whether an LFE Channel is present within the bitstream . Channel Mode determines whether the LFE Channel parame ter can be set. You must ha ve at least th ree channels in order to be able to add an L ...

  • Dolby Laboratories DP564 - page 84

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-14 Bitstream Mode Setting Definition Complete Main (CM) CM flags the bitstream as the Main Au dio Service for the program and all elements are present to form a c omplete audio program. Currently, this is the most comm on setting. The CM Service may co ntain from one (mono) to six (5.1 ) chan ...

  • Dolby Laboratories DP564 - page 85

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-15 RF Overmodulation Protection This parameter is designed to protect against overmodulation when a decoded Dolby Digital bitstream is RF modulated. When enabled the Dolby Digital encoder includes pre-emphasis in its calculations for RF Mode compression. The param eter has no effect when deco ...

  • Dolby Laboratories DP564 - page 86

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-16 Surround Downmix Level Setting Defini tion 0.707 (–3 dB) default The left and right surround channels are each attenuated 3 dB and sent to the left and right front channels, respectively. 0.5 (–6 dB) Same as above, but the si gnal is attenuated 6 dB. 0 (–999 dB) The surround channel( ...

  • Dolby Laboratories DP564 - page 87

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-17 environment matches that of the m ixing room. This control operates in add ition to the dialogue level control, and is best th ought of as the final volum e setting on the consumer’s equipment. This value can be determ ined by measuring the SPL of pink noise at studio reference level and ...

  • Dolby Laboratories DP564 - page 88

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-18 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 m enus. DC Filter This parameter determines whether a DC bl ocking 3 Hz highpass filte ...

  • Dolby Laboratories DP564 - page 89

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-19 Surround 3 dB Attenuation The Surround 3 dB Attenuation paramete r determines whether the surround channel(s) are attenuated 3 dB before en coding. The attenuation actually takes p lace inside the Dolby Digital encoder. It bala nces the signal levels between theatrical mixing rooms (dubbin ...

  • Dolby Laboratories DP564 - page 90

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-20 Because the revised definitions affect metada ta param eters that were not used by the consumer decoders, all decoders will be co m patible with the revised bitstream . Newer decoders that are programmed to detect and deco de the new parameters will be able to implement the new features th ...

  • Dolby Laboratories DP564 - page 91

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-21 Lt/Rt Surround Mix Level This parameter indicates th e level shift applied to th e surround channels w hen downmixing to an Lt/Rt output. Its operati on is sim ilar to the surround downmix level in the universal metadata . Lt/Rt Surround Mix Level Setting 1.414 ( +3.0 dB ) 1.189 ( +1.5 dB ...

  • Dolby Laboratories DP564 - page 92

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-22 Lo/Ro Surround Mix Level This parameter indicates th e level shift applied to th e surround channels w hen downmixing to a Lo/Ro output. When Exte nded BSI param eters are active, this parameter is used, and the Surround Mix Leve l parameter in the universal param eters is not. Lo/Ro Surro ...

  • Dolby Laboratories DP564 - page 93

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-23 A.6 Metadata Combinations Table A-3 provides examples of combinations of parameters that could be used as a preset. Note: These parameter settings are prov ided as examples to dem onstrate that different settings can be saved, named, a nd brought up as needed for quick use in different sit ...

  • Dolby Laboratories DP564 - page 94

    DP564 Multichannel Audio Decod er Appendix A: Metadata A-24 Extended Bitstream Information parameters are in italics. Parameter Action Film (5.1) Drama (Lt/Rt) Local News (Mono) Music (5.0) Live Sporting Events (5.0) Lo/Ro Center Downmix Level N/A N/A N/A N/A 0.707 (–3 dB) Lo/Ro Surround Downmix Level N/A N/A N/A N/A 0.595 (–4.5 dB) Dolby Surro ...

  • Dolby Laboratories DP564 - page 95

    DP564 Multichannel Audio Decod er B-1 Appendix B Latency Values The latency of the DP564 is defined as the difference in time between the beginning of a valid Dolby ® Digital frame entering the DP564 and the output of the first PCM sample represented by that frame. Note: At any sample rate, a Dolby Digital frame represents 1,536 audio samp les. Th ...

  • Dolby Laboratories DP564 - page 96

    DP564 Multichannel Audio Decod er Appendix B: Latency Values B-2 Table B-1 shows the SMPTE Standard specif ied decoder latency with respect to the first word of the Dolby Digital fram e (which is the reference point). Table B-1 SMPTE-Specified Latency Sample Rate Decoder Latency with Respect to Reference Point 48 kHz 32 ms 44.1 kHz 34.83 ms 32 kHz ...

  • Dolby Laboratories DP564 - page 97

    DP564 Multichannel Audio Decod er Appendix B: Latency Values B-3 Table B-2 IEC 61937 Specified Latency, with Respe c t to Beginning of Dolby Digital (AC-3) burst payload Latency in Milliseconds Data Rate in kbps Sample Rate: 48 kHz Sample Rate: 44.1 kHz Sample Rate: 32 kHz 56 6.11 6.73 9.75 64 6.22 6.86 10.00 80 6.44 7.12 10.50 96 6.67 7.38 11.00 1 ...

  • Dolby Laboratories DP564 - page 98

    Virtual Dolb y Techn ologies Tes t DVD Tr ack Lis t iv ...

  • Dolby Laboratories DP564 - page 99

    DP564 Multichannel Audio Decod er C-1 Appendix C Specifications Audio Coding Algorithms Dolby ® Digital, Dolby Surround Pro Logic ® , Dolby Digital Surround EX ™ , Dolby Pro Logic II, Dolby Headphone Audio Input Sampling Rates 32, 44.1, 48, 88.2, or 96 kHz Audio Output Sampling Rates 32, 44.1, or 48 kHz Frequency Response Digital Outputs: 20 Hz ...

  • Dolby Laboratories DP564 - page 100

    DP564 Multichannel Audio Decod e r Appendix C: Specifications C-2 Digital Audio Outputs Four BNC female connectors, unbalanced, 75 Ω per AES-3ID-1995 (SMPTE 276M) Analog Audio Outputs 0 dBFS = +24 dBu; balanced floating; eigh t 3-pin male XLR connectors, 24-bit DAC Headphone Output +7 dBu maximum output into 50 Ω nom inal; 1/4-inch standard ste ...

  • Dolby Laboratories DP564 - page 101

    DP564 Multichannel Audio Decod e r Appendix C: Specifications C-3 Test Noise Auto: Sequences wideband or band-limited pink noise through enabled channels at two-second intervals Manual: Feeds continuous noise to selected channel when unit is in Trim Level mode Power Requirements 90 to 264 VAC, 50 to 60 Hz, auto-sensing, 40 W maximum; this unit is d ...

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