The Loudness Wars And ITU-R BS

1y ago
4.05 MB
28 Pages
Last View : 4m ago
Last Download : 6m ago
Upload by : Kairi Hasson

The Loudness Wars and ITU-R BS.1770Thomas LundTC Electronic A/SDenmarkKBS Seoul June 17, 2015

Before BS.1770

Peak Level MeteringBad for BroadcastBad for Music

Before BS.1770

LoudnessModelsLeq(K) is simpleand performs well

BS.1770 LoudnessPowerGainLeftPre FilterRLB FilterMeanSquare0.0 dBRightPre FilterRLB FilterMeanSquare0.0 dBCenterPre FilterRLB FilterMeanSquare0.0 dBL SrndPre FilterRLB FilterMeanSquare 1.5 dBR SrndPre FilterRLB FilterMeanSquare 1.5 dBLFECurrently not used in Loudness CalculationsWorks for mono, stereo and 5.1Sum

Words: LUFS, LKFS and LULUFS LKFSUnit for absolute loudness levelCompare with [dBFS] for peak level-23.0 LUFS is the same as -23.0 LKFSOnly the spelling is differentLUUnit for relative loudness levelCompare with [dB] for peak levelLoudness at Target Level 0 LU

LUFS and LU0 LU denotes Target LevelIn this exampleTarget Level is -23 LUFSRemember: LUFS is the same as LKFS

Meter Example: LUFS and LUTarget at -23 LUFS

0Program LoudnessLUFS-4-8-12-16Use to normalize programsto a Target Level-20Target: -23 LUFS-24Measure: -28 LUFS-30-36-42-48-54-60IngestCorrected

0Program LoudnessLUFS-4-8-12-16Use to normalize programsto a Target Level-20A simple gain offsetbrings the programon Target-24-30-36-42-48-54-60IngestCorrected

Loudness on three time-scales400 m LoudnessEnd

True-peak LevelAES 23 Nielsen & Lund, 2003Part of BS.1770 alsoEven in a linear audio system, analogand digital level is not the same1Analog Level:Black LineDigital (sample) Level:Red DotsTrue-peak Level:Grey Lines2

Use Loudness meterto set levelsOnly use True-peak meterto avoid overload

Audio TerminologyPLRLRAPeak to Loudness RatioLoudness RangePeak level of a program or trackrelative to its Loudness, [dB]Typical Loudness variationinside a program or track, [LU]program or music tracksystemHeadroomDynamic RangePeak handling capability of a systemrelative to Target Level, [dB]Max/min signal ratio of a system, [dB]Not a relevant term in this context

Audio TerminologyPLR HeightHeadroom Clearance

Audio QualityPLR [dB]7.400 most popular music tracksGermany, UK, ak to Loudness Ratio 1963 - 2011Productions below the dotted line rarely sound good on fine speakers02050811YearOrtner, 2012

Mark KnopflerBritish Grove, London

Japan Loudness Status: TR-B32All programs: BS.1770-3Target Level: -24 LUFSTrue-Peak Max: -2 dBTPITU-R WPC6: Extension of BS.1770 to 22.2

US Loudness Status: ATSC A/85Commercials: BS.1770-3Programs: Speech levelTarget Level: -24 LUFSTrue-Peak Max: -2 dBTPUncertainty when measuring programs.

Results: Cumulative urement0LoudnessSpeech

[LU] 864ATSC A/85 246-8ProgramInterstitialDramaInterstitialFilm

1.2.Count Basie:Imagine Dragons:“Mean Old World”“Demons”Secret stereo recordingby Bruce Swedien1959From albumNight Visions2012Each track loudness-normalized to -18 LKFS/LUFS

ReferencesMore InfoKarl Küpfmüller (1962).Edit by K. Steinbuch ,Springer, BerlinNachrichtenverarbeitung im MenschenBenjamin Libet et al. (1979). PubMed id#427530. Bethesda, MDSubjective Referral of the Timing for a Conscious Sensory ExperienceRudolf Ortner (2012). Donau Universität, KremsJe lauter desto bumm! - The Evolution of LoudNielsen & Lund. (1999 - 2006). AES 23, 107, 109, 111, 121Stop Counting Samples and 0 dBFS LevelSkovenborg & Lund. (2007 - 2014). AES 123, 125, 127, 132, 135, 137Loudness Descriptors to Characterize Programs and Music TracksATSC A/85, EBU R128, ITU-R BS.1770, TR-B32AES 58 June 30 11:00 Prevention of Hearing Loss from the use ofPersonal Music PlayersEnd

The Loudness Wars and ITU-R BS.1770 Thomas Lund TC Electronic A/S Denmark KBS Seoul June 17, 2015. e BS.1770. Peak Level Metering Bad for Broadcast Bad for Music. e BS.1770. Loudness Models Leq(K) is simple and performs well. BS.1770 Loudness Left Pre Filter Mean

Related Documents:

defined in ITU-R BS.1770 [3], introducing the measures LU (Loudness Unit) and LUFS (Loudness Units, referenced to Full Scale)1; f) and that the level-gated measurement of Programme Loudness defined in ITU-R BS.1770 Equation (7) (which hence measures foreground loudness) is advantageous to improve the loudness matching of programmes with a wide .

ITU-R standard BS.1770: –BS.1770 defines a standardized loudness meter that permits the integrated loudness of a given program segment to be measured. –The goal for each program segments is to make its BS.1770 integrated loudness equal to the target loudness. –Because the loudness is integrated over the entire duration of a

For international broadcasting, the ITU-R9 BS.1770-2 standard for loudness measurement has recently been developed.10 It defines the equivalent loudness of an audio signal as its LUFS level, meaning Loudness Units relative to Full Scale.11 BS.1770-2 does a very good job in predicting subjective loudness.12 Loudness normalization based upon BS.1770-

May 02, 2018 · D. Program Evaluation ͟The organization has provided a description of the framework for how each program will be evaluated. The framework should include all the elements below: ͟The evaluation methods are cost-effective for the organization ͟Quantitative and qualitative data is being collected (at Basics tier, data collection must have begun)

̶The leading indicator of employee engagement is based on the quality of the relationship between employee and supervisor Empower your managers! ̶Help them understand the impact on the organization ̶Share important changes, plan options, tasks, and deadlines ̶Provide key messages and talking points ̶Prepare them to answer employee questions

On an exceptional basis, Member States may request UNESCO to provide thé candidates with access to thé platform so they can complète thé form by themselves. Thèse requests must be addressed to esd rize unesco. or by 15 A ril 2021 UNESCO will provide thé nomineewith accessto thé platform via their émail address.

which standard is used for metering. Targets, units, and metering algorithms change depending on the selected preset. At the top of the metering section you can find the reading for Integrated Loudness, the overall loudness in LUFS/ LKFS of the whole programme / track. At the bottom left of the Integrated Loudness section is a Target

English Language Arts: Grade 3 READING Guiding Principle: Students read a wide range of fiction, nonfiction, classic, and contemporary works, to build an understanding of texts, of themselves, and of the cultures of the United States and the world; to acquire new information; to respond to the needs and demands of society and the workplace .