Recommendation ITU-R BS.1770-5
Policy on Intellectual Property Right (IPR)
Annex 1 Specification of the objective multichannel loudness measurement
algorithm
Attachment 1 to Annex 1 (informative) Description and development of the
multichannel measurement algorithm
1 Introduction
2 Background
3 Design of the Leq(RLB) algorithm
4 Subjective tests
4.1 Subjective test set-up
4.2 The subjective database
5 Design of the multichannel loudness algorithm
6 Evaluation of the multichannel algorithm
Annex 2 Guidelines for accurate measurement of “true-peak” level
1 Summary
2 Block diagram
3 Detailed description
Attachment 1 to Annex 2 (informative) Considerations for accurate peak
metering of digital audio signals
What is the problem?
How bad can the problem be?
What is the solution?
How should a true-peak meter be implemented?
Annex 3 Extended loudness measurement algorithm for loudspeaker configurations
of advanced sound systems
1 Extension for loudspeaker configurations of advanced sound system
Annex 4 Loudness measurement algorithm for object-based audio signals or
combination of channel- and object-based audio signals
Attachment 1 to Annex 4 (informative) Objective loudness for object-based
audio signals or combination of channel- and object-based audio signals
depending on rendering conditions
1 Difference in objective loudness depending on rendering conditions
2 Subjective tests
2.1 Effects on test materials
2.2 Effects on loudspeaker configurations
2.3 Effects on rendering algorithms