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Dolby Digital Plus for Hi-Def Media Premiers at AES 2004

Dolby will also highlight multichannel audio production tools (October 26, 2004)

Dolby Laboratories is proud to offer the first public demonstration of Dolby Digital Plus its new, highly sophisticated, and versatile audio codec at the 117th AES Convention. Dolby Digital Plus is designed for next-generation audio, video delivery, and audio storage system technologies such HD-DVD and hard-disk-drive (HDD) media. The DVD Forum recently selected Dolby Digital Plus as a standard audio format for HD-DVD. Additionally, at Booth 1402, show attendees can learn about multichannel audio production for DVDs, television programming, and games, and see featured tools for pitch correction and loudness measurement.

Dolby Digital Plus Delivers Creative Power and Freedom
Dolby will demonstrate Dolby Digital Plus for HD packaged media during AES exhibit days in Room 203, East Mezzanine, in the Moscone Convention Center. This marks the first public demonstration of the technology. Dolby Digital Plus was selected as a mandatory standard for HD-DVD by the DVD Forum.

Dolby Digital Plus offers bit-rate and channel extendibility and is an extension of the popular Dolby Digital format, the audio compression standard for DVD-Video players worldwide and the mandated or de facto standard for many DTV systems around the world. The DVD Forum's selection of Dolby Digital Plus as a mandatory audio standard is intended to ensure future compatibility of HD-DVD software media and playback devices with the more than 39 million A/V receivers equipped with Dolby Digital in homes today.

Where higher bit rates can be allocated for audio playback, such as in HD-DVD, Dolby Digital Plus delivers higher quality audio performance from a highly sophisticated perceptual coding process. These extensions to the existing Dolby Digital format extend the peak data rate from 640 kbps up to 6 Mbps. Additionally, Dolby Digital Plus is designed to offer discrete channel coverage beyond the current 5.1 standard, such as 7.1 discrete channels and more.

Dolby Digital Plus also offers coding efficiencies for systems where bandwidth is at a premium or limited, such as next-generation cable, broadcast, and satellite systems. Earlier this year, the Advanced Television Systems Committee (ATSC) nominated Dolby Digital Plus as a Candidate Standard for future robust channel transmission. In anticipation of future packaged media business models and format flexibility, the efficiency of Dolby Digital Plus will also enable simultaneous streaming of audio content and software playback. This capability would allow consumers to watch a movie while listening to artists' or directors' commentary streamed directly from the studio website, for example.

"Dolby Digital Plus will enable superior audio performance for next-generation packaged media formats such as HD-DVD and other home theater applications such as hard-disk-drive media, while maintaining our commitment to the millions of households worldwide that have adopted Dolby Digital 5.1 as their entertainment standard," said Tom Daily, Director of Marketing, Dolby Laboratories. "We encourage all AES attendees to see our Dolby Digital Plus demonstration and hear the difference its advanced coding makes in sound quality and efficiency."

Dolby will be presenting a paper on Dolby Digital Plus at the AES convention. Following are details of the Dolby booth and Dolby presentations at AES.

Featured at the Dolby Booth 1402:

Multichannel Audio Production
Experience clips from the 46th Annual Grammy Awards telecast in Dolby Digital 5.1 and HDTV. Dolby experts will be available to answer your questions about Dolby Digital and Dolby E technologies and the products required for producing multichannel audio content for HDTV and DVD.

Dolby Pro Logic II
Dolby Pro Logic II provides surround sound capability on any two-channel television program or service, as well as on VHS tapes and top-selling video games. Listen to recent TV programming encoded with Dolby Pro Logic II surround, and learn more about the DP563 Dolby Surround and Pro Logic II Encoder, nominated for a 2004 TEC Award, and the companion Dolby DP564 Multichannel Audio Decoder.

Dolby 585 Time Scaling Processor
Shift the pitch. Preserve the sound. During 24-frame film to 25-frame video transfers (or vice versa) on multichannel audio material, the Dolby 585 eliminates the pitch changes that can occur during these processes and provides excellent natural-sounding results. Audio can be pitch shifted +/ 15 percent on up to eight tracks simultaneously, in real time. The Dolby 585 can also scale the time of audio programs by as much as +/ 15 percent while maintaining proper pitch. Stop by our booth and hear why the Dolby 585 is a superior multichannel pitch shifting and time scaling audio processor.

Loudness Measurement
For professionals producing programming destined for television broadcast, and for DVD releases in Dolby Digital, the Emmy-award-winning Dolby LM100 Broadcast Loudness Meter is a valuable tool for measuring the subjective loudness of these programs. The Dolby LM100 with Dialogue Intelligence will be demonstrated on various 5.1- and two-channel material. This exhibit will also debut the new LM100 software remote application, which enhances the LM100's capabilities with advanced loudness measurement, logging features, and error reporting.

AES Papers by Dolby Personnel
Session B: Lossy and Lossless Audio Coding, Part 1 Thursday, October 28, 9:30 10:00 a.m. Improved Transient Pre-Noise Performance of Low-Bit-Rate Audio Coders Using Time Scaling Synthesis, Brett G. Crockett Dolby Laboratories, Inc.

Session D: Lossy and Lossless Audio Coding, Part 2 Thursday, October 28, 1:00 1:30 p.m. Introduction to Dolby Digital Plus, an Enhancement to the Dolby Digital Coding, Louis D. Fielder, Robert L. Anderson, Brett G. Crockett, Grant A. Davidson, Mark F. Davis, Stephen C. Turner, Mark S. Vinton, and Phillip A. Williams Dolby Laboratories, Inc.

Session Z2 Posters: Instrumentation and Measurement of Lossy and Lossless Audio Coding Friday, October 29, 9:00 11:00 a.m. Extending Quasi-Anechoic Measurements to Low Frequencies, Eric Benjamin Dolby Laboratories, Inc.

Session I: Psychoacoustics, Perception, and Listening Tests Friday, October 29, 1:30 2:00 p.m. Preferred Listening Levels and Acceptance Windows for Dialog Reproduction in the Domestic Environment, Eric Benjamin Dolby Laboratories, Inc.

Session I: Psychoacoustics, Perception, and Listening Tests Friday, October 29, 3:00 3:30 p.m. A New Algorithm for the Objective Measurement of Perceived Loudness, Alan Seefeldt, Michael Smithers, and Brett Crockett Dolby Laboratories, Inc.

AES Workshops Featuring Dolby Personnel
Spatial Coding of Surround Sound: A Progress Report Friday, October 29, 9:00 11:00 a.m. Featuring Chair Mark Davis and panelist Mark Vinton Dolby Laboratories, Inc.

Mastering for Low-Bit-Rate Perceptual Codecs Friday, October 29, 2:00 4:00 p.m. Featuring John Loose Dolby Laboratories, Inc.

How We Made Games in the Hallway Rock! Friday, October 29, 4:30 6:30 p.m. Featuring Jack Buser Dolby Laboratories, Inc.

AES Special Events with Dolby Personnel
Surround for Digital Radio Saturday, October 30, 9:00 a.m. 12:00 p.m. Featuring Rocky Graham, Manager DTV Applications Dolby Laboratories, Inc.

About Dolby Laboratories
Dolby Laboratories creates technologies that intensify and enhance the entertainment experience. For nearly four decades, Dolby has been instrumental in defining high-quality audio and surround sound in cinema, broadcast, home audio systems, cars, DVDs, headphones, games, televisions, and personal computers. Based in San Francisco with European headquarters in England, the privately held company has entertainment industry liaison offices in New York and Los Angeles, and licensing liaison offices in Hong Kong, Shanghai, Beijing, and Tokyo.

For more information about Dolby Laboratories or Dolby technologies, please visit


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Related Keywords:Dolby Digital Plus, Dolby Laboratories, Dolby, audio codec, AES, HD-DVD, DVD Forum, multichannel audio, Dolby Digital, ATSC, Tom Daily, Dolby E, Dolby Pro Logic II, DP563, Encoder, TEC, DP564, Dolby 585 Time Scaling Processor, LM100 Broadcast Loudness Meter, LM100, Brett G. Crockett, Louis D. Fielder, Robert L. Anderson, Grant A. Davidson, Mark F. Davis, Stephen C. Turner, Mark S. Vinton, Phillip A. Williams, Eric Benjamin, Alan Seefeldt, Michael Smithers, Mark Davis, John Loose, Jack Buser, Rocky Graham,

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