Surround for Digital Radio. NRSC - SSATG May 9, Mike Canevaro Director, Strategic Development SRS Labs, Inc.

Transcription

1 Surround for Digital Radio NRSC - SSATG May 9, 2005 Mike Canevaro Director, Strategic Development SRS Labs, Inc. Agenda SRS Labs Overview The Realities of Surround and Digital Radio Circle Surround Overview Technical Description Circle Surround Advantages Today Circle Surround Technology Overview Technical Specifications Circle Surround and HD Radio Decoding Circle Surround and HD Radio Demonstrations 1

2 SRS Company Overview Largest provider of audio, surround & voice technologies Relationships with leading global corporations Broadest platform coverage SRS technology inside 600 million+ products Strong IP portfolio with over 200 patents & applications worldwide Headquarters: Santa Ana, CA USA Worldwide Offices: Japan, Korea, Hong Kong, Taiwan, Europe & USA Unsurpassed Audio Technologies Key Portfolios 3D Stereo technologies Small speaker enhancements Bass enhancement 3D Positional Audio Reverb, Doppler, EQ and more Surround sound virtualizer 6.1 channel Advanced Matrix encoder 6.1 channel Advanced Matrix decoder In-channel Noise Reduction Voice Intelligibility Processor Voice clarity & definition 2

3 Over 200 Leading Licensees SRS Car Audio Licensees 3

4 SRS Professional Audio Division Four Market Focus: Broadcast Television: SD, HD Digital Radio: HD Radio, DAB, Satellite, ISDB-T Post Production Television DVD: Supplemental and Foreign Language soundtracks Digital Cinema Music Discrete/Matrix Surround Capture Enhanced Cinema Playback Pre-show entertainment 5.1 Compact Disc Digital Distribution Dual-Layer DVD-A/CD, SACD Our Partners Reach Millions Daily TV, Radio, DVDs and CDs Broadcast Partners Radio DVD/CD Content 4

5 The Realities of Surround for Digital Radio Broadcasting 1. The Need for a Standard? 2. The Realities of Surround for Digital Broadcasting 3. Consumer Market Adoption is well under way The Realities of Surround for Digital Broadcasting Surround in any form currently proposed for digital broadcasting is content, not a transmission format Matrix and watermarked systems simply use the current audio bit budget Parametric systems use 17% of the total bit allocation Doesn t this degrade stereo? Modern DSP s can and do easily handle multiple surround formats 5

6 The Realities of Surround for Digital Broadcasting The production chain cannot accommodate additional data or non-standard audio formats Additional bits will most likely not be allocated for surround data (bits = $$$) ibiquity 3% Incremental Net Revenue for Supplemental Channels Parametric systems bring only incremental improvements over pure matrix systems and they are not discrete No true discrete system is practical due to current bandwidth limitations We must broadcast in a format users can decode! Meeting the Needs of the Consumer Most of the time the consumer is listening to un-encoded material CD s, AAC, and MP3 content are frequent sources A great, immersive surround experience is desired regardless of content type or listening environment This is not accomplished by simply delivering channels This is especially true in the car, which is a key listening environment for radio While listeners in an automotive environment are captive, they are never in the sweet spot and their acoustic perspective changes depending upon seating position Signal processing techniques can be used to optimize the surround experience for all listeners in the car and to compensate for non-optimal speaker locations 6

7 Technology Description and Overview SRS Circle Surround Provides the following advantages today: Proven performance Current use in broadcasting by major TV networks (ESPN, ABC, NBC and major radio outlets in Japan (FM Tokyo, FM Yokohama, J-Wave and many more) Ease of integration for broadcasters Hardware or Software Solutions Strong and growing market acceptance Recognized consumer branding Cross compatibility with other decoders Industry accepted post processing for both home theater and automotive environments Ease of integration for CE manufacturers 7

8 Circle Surround Technology Overview Advanced 5.1 channel matrix encode/decode system Specifically designed for surround music Artistic Stereo Compatible Also capable of producing an excellent 5.1 channel experience from un-encoded stereo or mono material Multiband, variable time constant steering avoids typical matrix instability and objectionable artifacts Most noticeable w/high speed transients in higher frequencies, which are very common in musical recordings Superior transient response Preserves integrity of front channel sound stage Up to 40db separation between surround channels Smooth Panning between channels The Benefits of Circle Surround Transmission, routing and storage via current infrastructure and media Cross compatibility between all matrix encoders/decoders ProLogic, ProLogic II, Neural Audio, Logic 7, DTS NEO:6, Backward compatibility with all playback formats Mono, Stereo, LCRS, 5.1 and 6.1 Surround Excellent results with low and moderate bit rate transmission (HD Radio) Easy to implement for both consumers and professionals while providing a very high quality surround experience Examples of Matrix and Non-matrix systems Non Matrix, digital closed systems: Dolby Digital and DTS Matrix: SRS Circle Surround II, Dolby ProLogic II 8

9 SRS Labs and HD Radio TMS320C64X DSP CS Decoding >36 MIPS* *Today, SRS Circle Surround is the only Surround decoder available on the C64X > DRI350 - Lowest Cost Single-Chip HD Radio Solution (DRI350) - Combines AM/FM and HD Receiver - Supports Audio Processing: CS Decoding SAF7730 Dirana - CS Decoding >30 MIPS** **Today, SRS Circle Surround is the only Surround decoder available on the SAF7730 Today, Philips owns more than 65 percent of the global car radio DSP market. Circle Surround Products Production and Broadcast Tools: -TDM-02 SRS Circle Surround TDM Pro -VST-02 SRS Circle Surround VST Pro -SRS CSE-07 Circle Surround Pro Encoder -SRS CSD-07 Circle Surround Reference Decoder -SRS CSE-07D Circle Surround Digital Pro Encoder -SRS CSD-07D Circle Surround Digital Reference Decoder SRS TDM Pro 9

10 Demonstrations 1. Artistic Stereo Comparison Rob Thomas 2. THX 3. CS Channel Check/Demo 4. CS Car Chase 5. Various CS Encoded 1. Uncle Kracker 2. Toby Lightman 3. Green Card 4. Boz Scaggs 5. Tokyo FM 6. Elmer Bernstein 7. Sting 8. Godsmack 9. Michiko Ogawa Artistic Stereo Comparison Rob Thomas Artistic Stereo???* Rob Thomas Or is this the Artistic Stereo? *Taken from the Billboard #1 Album (Dual-Disc), something to be *Mixed by David Thoerner and produced by Matt Serletic *Clip Courtesy Atlantic Records 10