Dolby Laboratories DVD- 2OO3 Dokumentacja

Dolby® Professional Loudness SolutionsInformation for Prospective LicenseesIssue 3

8• If the Licensed Product is a le-based transcoder product, the provided test signals in PCM or WAV format are also supplied as Dolby Digital, Dolb

9• For metering products, adherence to the requirements outlined in EBU Tech 3341 is recommended.5 {A reset control for real-time measurement produc

10Real-time functionality is as follows:• Real-time update of the dialnorm, DRC, and CRC bitstream parameters of Dolby Digital and Dolby Digital Plus

11• Dialnorm update: Occasionally, it is necessary to update a Dolby Digital or Dolby Digital Plus stream with a new dialnorm value. This occurs when

12Licensed Product RequirementsLicensed Products must be developed in accordance with the terms in Tables 3 through 19.Table 3 General Requirements an

13Table 5 Loudness Metering ModeParameter Mode Settings DefaultLoudness metering mode (R) ITU-R BS.1770-2 plus Dialogue Intelligence (R)ITU-R BS.1770-

14Table 12 Normalization TargetParameter Setting Values Default SettingNormalization target (R) –31 to–8 LKFS/LUFS/dBFS, in 1 dB increments or ner –2

15Table 15 File-Based Loudness Correction LoggingLog Parameter Description RateNumber of streams (R) Products must report the number of streams found

16Input and output DRC proles:Line mode (R)RF mode (R)Input and output: Products must report both the Line mode and RF mode DRC proles of the input

17Dialnorm Update RequirementsIf implementing dialnorm updating, the requirements in Tables 17 through 19 apply.Table 17 Dialnorm Update User-Interfac

Table of ContentsIntroduction ... 1Technology Overview ...

18Table 19 Log Warnings for Dialnorm UpdateLog Warnings (All Required) DescriptionPartial frame A partial frame was detected in the bitstream.Unsuppor

19General Licensing RequirementsOEM DEVELOPMENT KITSIf the Licensed Product is to be an OEM development kit, either as a board or software library, th

20AppendixDOLBY PROFESSIONAL PRODUCTSDolby Laboratories manufactures a variety of professional products ideally suited for broadcast, DVD mastering, a

21Dolby Media Producer Software SuiteDolby Media Producer is a suite of professional software that supports all Dolby audio codecs used in mastering D

22CORPORATE HEADQUARTERSDolby Laboratories, Inc.Dolby Laboratories Licensing Corporation100 Potrero AvenueSan Francisco, CA 94103-4813 USAT +1-415-5

1IntroductionBroadcasters and content producers use Dolby® Professional Loudness solutions to help ensure consistent audio loudness levels. Because di

2Technology OverviewThe Dolby® Professional Loudness Metering solution combines the use of standards-based loudness estimation algorithms with Dolby D

3License AgreementIf you wish to develop products incorporating Dolby® Professional Loudness Metering and Correction solutions, you are required to en

4License Fees and RoyaltiesThere is a one-time licensing fee for Dolby® Professional Loudness Metering and Correction solutions. The license includes

5Obtaining a LicenseTo obtain approval of your product incorporating Dolby® Professional Loudness Metering and Correction solutions and activate your

6Product Specification for Dolby® Professional Loudness Metering and Dolby Professional Loudness CorrectionThis product specication is in two parts:

7Tools or test materials provided as part of the deliverables may be used only for internal testing and development of the Licensed Product and not fo