Dolby Broadcast Products and Technologies:
A Primer

 Four different technologies optimized for different purposes

Dolby Glossary
3

Dolby Glossary

"A digital audio compression technology..."

"A digital audio compression technology..."

Technology 3

3
Lt/Rt Encoding

 Professional Products

Technology

Lt/Rt Encoding

 Professional Products

Technology
1

Technology
1

Dolby Digital nuts and bolts...

1
The Transmission Pipeline

1
Home Theater Reception

Switching
Dolby Digital

1
 Professional Products

Technology

Technology

The Contribution Pipeline

The Contribution Pipeline

Switching
Dolby Digital

Switching
Dolby E

Slide 26

Slide 27

Slide 28

Slide 29

Slide 30

Slide 31

 Dolby Broadcast Products and Technologies
Q&A

and Audio Metadata
Demystified

Dolby Digital nuts and bolts...

What concerns viewers most about television audio?

Metadata to the rescue!

The “Three D’s” of Metadata

The “Three D’s” of Metadata

Loudness Uniformity

Loudness Uniformity

What is the “dialnorm” metadata parameter?

Dialnorm Demystified

Dialnorm Demystified

Dialnorm Demystified

Dialnorm Demystified

Dialnorm Demystified

Dialnorm Demystified

Rx for Loudness Control (without metadata)

Dialnorm Demystified

Dialnorm Demystified

What is the “dialnorm” value?

Dialnorm Demo

Typical Programming
a) without dialnorm
b) with dialnorm

How can we measure dialog level?

The “Three D’s” of Metadata

Dynamic Range Control (DRC)

DRC Demystified

Dynamic Range Control (DRC)

Dynamic Range Control
 Demo

The “Three D’s” of Metadata

From Full,
5.1 Channel
Home Theaters

3 Types of Downmixing

Lt/Rt Compatible Downmix

Lo/Ro Downmix

Mono Downmix (Lo+Ro)

Receiver downmixing options

Downmixing Demo

The “Three D’s” of Metadata

The “Three D’s” of Metadata

The “Three D’s” of Metadata

The “Three D’s” of Metadata

One bitstream for everyone

and Audio Metadata
Demystified

Time for Questions!

Thank You
Mike Babbitt
mgb@dolby.com