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The featured Dolby professional audio products to be demonstrated, DP570, DM100, DP569, and DP562, are designed to produce the highest-quality digital audio possible. Additionally, Dolby staff will demonstrate Advanced Audio Coding (AAC) technology for secure Internet music delivery.

``We'll demonstrate how our innovative pro audio products and technologies provide the highest-quality multichannel audio for applications from production to distribution to broadcast transmission,'' said Nancy Byers-Teague, Marketing Manager, Professional Audio Products, Dolby Laboratories. ``Additionally, we'll demonstrate the capabilities of AAC, the latest Internet music delivery technology.''

DP570

The Dolby booth will feature daily demonstrations on the new DP570 Multichannel Audio Tool, which greatly simplifies the production of multichannel audio programs for DTV and DVD. The DP570 enables producers and DTV broadcasters to enhance the presentation quality of their multichannel audio mix. It combines the features of Dolby Digital metadata selection and receiver emulation to enable the creation of audio metadata for multiple programs, and it also provides monitoring capabilities. The DP570 also includes many features to simplify the creation of multichannel audio programs, such as speaker selection, audio channel routing (which eliminates the need for an external router), and separate inputs for Pro Logic decoding. The DP570 will be available for purchase in late January 2001.

DM100

Dolby Laboratories' new handheld DM100 Bitstream Analyzer will allow audio system integrators and service engineers to quickly test the integrity and composition of Dolby Digital, Dolby E, and PCM signals in a production facility, broadcast facility, or home theater. The DM100 also generates Dolby Digital, Dolby E, and PCM test bitstreams. It has a headphone output for monitoring any two channels simultaneously, and a built-in speaker that can monitor the sum of any channel pair. The DM100 will be available for purchase in late October 2000.

DP569

Dolby Laboratories' DP569 is the most advanced Dolby Digital multichannel audio encoder. Intended for digital TV, cable, disc authoring facilities, and mastering for DVD and other recorded media, the unit supports encoded bit rates from 56 to 640 kbps and channel formats from mono to 5.1-channel surround sound.

DP562

The DP562 (the counterpart of the DP569) is a reference multichannel Dolby Digital decoder, enabling production, mastering, and broadcast facilities to monitor audio, video, and multimedia programs with multichannel sound. The DP562 allows users to select various decoding formats, including Dolby Digital and four-channel Dolby Surround Pro Logic, for production of material for DVDs, DTV, and other high-quality media.

DVD Authoring

Dolby staff will also demonstrate the process of producing Dolby Digital (.ac3) files for DVD-Audio file mastering, using a DP569 Multichannel Dolby Digital Encoder and DP562 Multichannel Dolby Digital Decoder. File preparation is accomplished using the Dolby Digital Recorder and the Dolby Remote software utilities, running on a Windows-based PC (95/98/NT versions applicable) with a digital I/O soundcard.

Advanced Audio Coding

Dolby will demonstrate Advanced Audio Coding (AAC), which is a next-generation perceptual audio coder that uses advanced signal processing techniques and psycho-acoustic models to faithfully reproduce audio recordings at ultra-low data rates. A variety of audio material will be presented at several bit rates ranging from 128 kb/s (stereo) to 48 kb/s (mono). Listeners will be able to perform quick comparisons between the original PCM and the various AAC encoded bitstreams.

Dolby Laboratories licenses AAC on behalf of the co-developers/licensors of the technology, and also provides licensees with reference code and tools to aid in the development of AAC encoders and decoders.

In addition to demonstrations of the aforementioned products and technologies, Matthew Watson and Michael Truman of Dolby Laboratories will present an AES technical paper entitled, ``Analyzing the Performance of Lossless Coding Techniques Used in Audio Coders.'' The presentation will be held in room 403A, at 4:30 (session O-6) on the 25th of September. Copies of the technical paper will be available at the Dolby Booth.

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.

Contact:

     Dolby Laboratories
     Jim Arnold or Adam Anderson, 415/645-5000
     jja@dolby.com
          or
     Dolby Laboratories (UK)
     Catherine Unwin, 44 1793 842133
     cmu@dolby.co.uk
          or
     Shandwick International
     Kristin Thomson, 310/203-0550
     kthomson@shandwick.com