ITU R BS 775:2012
ITU R BS 775:2012 Multi-Channel Stereophonic Sound System With And Without Accompanying Picture
Table of Contents
Annex1-Hierarchyofcompatiblemultichannelsoundsystemsforbroadcastingandrecording
Annex2-Basicrequirements
Annex3-Compatibility
1Backwardcompatibilitywithexistingreceivers
2Downwardcompatibilitywithlow-costreceivers
Annex4-Downwardmixingofmultichannelaudiosignals
13/2sourcesignals
Annex5-Upwardsconversion
1Frontalchannels
2Surroundchannels
3Datachannel
Annex6-Additionaldata
Annex7-Lowfrequencyeffectschannel(LFE)
Appendix1toAnnex7(informative)-Usageofthelow
frequencyeffectschannel(LFE)
1Introduction
Whatisasubwoofer?
WhatistheLFE?
2Usingasubwoofertoextendfrequencyrange
3UsingtheLFEchanneltomakeanimpact
4ConnectingtheLFEtothesubwoofer
5Down-mixofbroadcastsurroundsound
6DolbyELFEandDolbyAC-3LFE
7Technicalrequirements
Annex8-Compatibilitymatrixinganddownwardmixing