Dolby Laboratories 26HFL5830D/27B User Manual

Dolby® Metadata Guide Issue 3

Dolby Laboratories, Inc. Metadata Guide 8 Consumer control of the dynamic range is limited when downmixing. Products with stereo or mono outputs do n

Dolby Laboratories, Inc. Metadata Guide 9 Dynamic Range Control Profiles Six preset DRC profiles are available to content producers: Film Light, Film

Dolby Laboratories, Inc. Metadata Guide 10 • Music Standard Max Boost: 12 dB (below –55 dB) Boost Range: –55 to –31 dB (2:1 ratio) Null Band Width:

Dolby Laboratories, Inc. Metadata Guide 11 It is important to consider the output signals from each piece of equipment that can receive a Dolby Digit

Dolby Laboratories, Inc. Metadata Guide 12 In each of these devices, the analog stereo output is one of two different stereo downmixes. One type is a

Dolby Laboratories, Inc. Metadata Guide 13 5 Parameter Definitions This section explains both professional and consumer metadata parameters in greate

Dolby Laboratories, Inc. Metadata Guide 14 Table 3 Program Configuration Settings Program Configurations 5.1 + 2 4 + 2 5.1 + 2 × 1 4 + 2 × 1 4 + 4

Dolby Laboratories, Inc. Metadata Guide 15 Channel Mode Setting Definition and Data Rate 1+1 Dual mono (not valid for DTV broadcast or DVD production

Dolby Laboratories, Inc. Metadata Guide 16 Bitstream Mode Setting Definition Complete Main (CM) CM flags the bitstream as the main audio service for

Dolby Laboratories, Inc. Metadata Guide 17 RF Overmodulation Protection This parameter is designed to protect against overmodulation when a decoded

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Dolby Laboratories, Inc. Metadata Guide 18 Dolby Surround Mode This parameter indicates to a Dolby Digital decoding product that also contains a Dol

Dolby Laboratories, Inc. Metadata Guide 19 Room Type The Room Type parameter describes the equalization used during the final mixing session at the

Dolby Laboratories, Inc. Metadata Guide 20 Note: The parameters DC Filter, Lowpass Filter, LFE Lowpass Filter, Surround 3 dB Attenuation, and Surrou

Dolby Laboratories, Inc. Metadata Guide 21 mixing rooms (dubbing stages) and consumer mixing rooms (DVD or TV studios). Consumer mixing rooms are cal

Dolby Laboratories, Inc. Metadata Guide 22 Products that allow emulation of the effects of metadata, such as the DP570, normally have a feature that

Dolby Laboratories, Inc. Metadata Guide 23 Lt/Rt Surround Downmix Level This parameter indicates the level shift applied to the Surround channels whe

Dolby Laboratories, Inc. Metadata Guide 24 Lo/Ro Surround Downmix Level This parameter indicates the level shift applied to the Surround channels whe

Dolby Laboratories, Inc. Metadata Guide 25 6 Metadata Combinations Table 4 provides examples of combinations of parameters that could be used as a pr

Dolby Laboratories, Inc. Metadata Guide 26 (Extended Bitstream Information parameters are in italics.) Parameter Action Film (5.1) Drama (Lt/Rt) Lo

Dolby Laboratories, Inc. 1 A Guide to Dolby Metadata Metadata provides unprecedented capability for content producers to deliver the highest qualit

Dolby Laboratories, Inc. Metadata Guide 2 Dolby E is a distribution bitstream capable of carrying up to eight channels of encoded audio and metadata.

Dolby Laboratories, Inc. Metadata Guide 3 Figure 1 shows a 5.1 + 2 Program Config, consisting of a 5.1-channel program and a two-channel secondary au

Dolby Laboratories, Inc. Metadata Guide 4 Both types of metadata can be examined, modified, or passed through during encoding. Table 1 lists the acti

Dolby Laboratories, Inc. Metadata Guide 5 Timecode Dolby E bitstreams carry timecode information in hours:minutes:seconds:frames format. Pitch Shift

Dolby Laboratories, Inc. Metadata Guide 6 The Scale The scale used in the Dialogue Level setting ranges in 1 dB steps from –1 to –31 dB. Contrary to

Dolby Laboratories, Inc. Metadata Guide 7 This metadata can then be applied to the signal by the decoder to reduce the signal’s dynamic range. Throu