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Dolby to Demo DVD-Audio and AAC at AES 2001

Also showing newest multichannel audio encoding and decoding equipment By DMN Staff Writer
Dolby Laboratories will showcase its music delivery solutions with demonstrations of DVD-Audio and AAC technology, and will also show its latest multichannel audio encoding and decoding equipment at the 111th AES Convention in New York, November 30 through December 3, 2001, booth #124.

With its ability to deliver up to six channels of 24-bit/96 kHz PCM, DVD-A allows music lovers to enjoy master-quality recordings at home. "Dolby is proud to be part of the DVD-Audio format, with the inclusion of MLP LosslessTM and Dolby Digital within the DVD-A specification," said Nancy Byers-Teague, Marketing Manager, Professional Audio Products, Dolby Laboratories. MLP Lossless packs DVD-A discs with the highest-quality sampling and bit rates on stereo and multichannel PCM tracks, and Dolby Digital 5.1-channel audio added to the video region of the DVD-A disc allows customers to play DVD-A discs on their DVD-Video systems.


At the Dolby booth, visitors are invited to view a short video presentation about this high-quality format, which includes production, authoring, and mastering information, as well as footage on new disc releases and available hardware. Additionally, the presentation will include overviews of the application of MLP Lossless and Dolby Digital in DVD-A, as well as information about the Dolby professional products used for DVD file mastering.

"For bandwidth-constrained environments, such as the Internet, wireless applications, and digital radio, AAC technology is the perfect, high-efficiency complement for music delivery," said Andrew Fischer, Business Development Manager, AAC, Dolby Laboratories. AAC is standardized in the MPEG-2 and MPEG-4 specifications and has been deployed in Japanese digital broadcast, for music delivery on the Internet, and in a variety of portable music players. The demonstration at the Dolby booth will let visitors audition AAC encoded material at a variety of low bit rates, typical of the applications mentioned above.

Also shown in the booth will be a selection of the newest game consoles to make use of various Dolby multichannel audio technologies. These technologies include Dolby Surround, the de facto standard in multichannel game audio, Dolby Interactive, which enables Dolby Digital output from PCs and game consoles, and Dolby Surround Pro Logic II, which offers 5.1-channel performance from two-channel platforms. Visitors to the Dolby booth will see the season's hottest game titles, all of which use Dolby technologies.

The following products will be on display as part of Dolby's music delivery presentations:

DP569 Multichannel Dolby Digital Encoder with version 2.0 software The DP569 features a new front panel, aluminum chassis, and menu system to simplify navigation. Version 2.0 software includes Dolby Digital Surround EXTM and HDCD flags, more downmix settings and presets, automatic data rate selection, and improved audio coding.

EX-EU4 Dolby Digital Surround EX Encoder For use in production and DVD authoring facilities, the EX-EU4 creates Dolby Digital Surround EX audio featuring discrete Left and Right Surround channels plus a third, matrix-encoded Back Surround channel. The unit can be used in conjunction with a DP569 Dolby Digital Encoder.

EX-DU4 Dolby Digital Surround EX Decoder The EX-DU4 is the companion decoder to the EX-EU4 and is used to monitor Dolby Digital Surround EX titles. The unit provides monitor switching between 5.1 and 6.1 formats to check Dolby Digital Surround EX and Dolby Digital compatibility. It is also used in conjunction with the DP562 Dolby Digital Decoder.

The following professional audio technologies for DTV production and distribution will be on display:

DP579 Dolby E Tri-Level Sync Interface Unit Postproduction is migrating toward 24-frame acquisition and storage. The DP579 interface converts standard tri-level video sync into a Dolby Black reference that is used by the DP571 Dolby E Encoder and DP572 Dolby E Decoder to generate 23.98 or 24 fps (24P) Dolby E.

DP583 Dolby E and Dolby Digital Frame Synchronizer The DP583 allows postproduction facilities to record Dolby E streams to non-video recorders, such as 20-bit DAT. The unit also synchronizes externally generated Dolby E or Dolby Digital bitstreams to match the internal plant timing. The DP583 accepts all Dolby E and Dolby Digital frame and data rates, as well as PCM inputs, and provides an output that has been reframed to match local plant reference.

Dolby will also show its Dolby E family of products for postproduction: the DP570 Multichannel Audio Tool, the DP571 Dolby E Encoder, and the DP572 Dolby E Decoder.

During the show, Dolby personnel will present the following discussions:

Special Events "The History of Signal Processing," Ray Dolby, Founder and Chairman, Dolby Laboratories; Friday, November 30, 2:00 p.m.

"Digital Broadcasting in the United States," Jeffrey Riedmiller, Applications Engineer, Dolby Laboratories; Saturday, December 1, 9:00 a.m.

"Audio for Games: The Next Level, " Dennis Staats, Director, Computer and Games Technology Marketing, Dolby Laboratories; Monday, December 3, 9:00 a.m.

AES Papers (Check AES Convention Guide for details) Paper # 73, "Subjective Evaluation of an Audio Distribution Coding System," presented by Dane Grant, Grant Davidson, and Louis Fielder; Saturday, December 1; Session H: Psyhchoacoustics and Audio Testing, Part 1: 9:00 a.m. (1st presentation).

Paper # 75, "Practical Limits in Room Equalization," presented by Louis D. Fielder; Monday, December 3; Session O: Signal Processing, Part 3: 9:00 a.m. (2nd presentation).

Paper # 131, "Increased Efficiency MPEG-2 AAC Encoding," presented by Michael J. Smithers and Matt C. Fellers; Monday, December 3, Session Q: Coding of Audio Signals, Part 2: 2:00 p.m. (2nd presentation).

Paper # 145, "Low-Latency Encoding for Consumer Applications," presented by Michael Truman, John White, and Michael Smithers; Monday, December 3; Session Q: Coding of Audio Signals, Part 2: 2:00 p.m. (5th presentation).

About Dolby Laboratories
Dolby Laboratories is the developer of signal processing systems used worldwide in applications that include motion picture sound, consumer entertainment products and media, broadcasting, and music recording. Based in San Francisco with European headquarters in England, the privately held company also has offices in New York, Los Angeles, Shanghai, Beijing, and Tokyo.

For more information about Dolby Laboratories or Dolby technologies, go to www.dolby.com.

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Related Keywords:Dolby, DVD-A, AAC, AES, audio

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