HD Voice and Wideband Codecs (HD-02) Panel Discussion (ITEXPO West 2009) September 02, 2009 Los Angeles, CA

Transcription

1 A World Leader and Innovator In Wireless Technologies HD Voice and Wideband Codecs (HD-02) Panel Discussion (ITEXPO West 2009) September 02, 2009 Los Angeles, CA A. Ryan Heidari Director, Technology Marketing

2 HD Voice and Wideband Codecs (HD-02) Wednesday - 09/02/09, 9:30-10:15am Historically high-quality voice codecs have been compute intensive and complicated to license due to multiple ownership of intellectual property. This has now changed. Moore s Law has made the compute requirements easily manageable, and several vendors have released state of the art royalty-free codecs, for example Polycom, Skype and Speex. This session explains the benefits of each. Presented by: Jeffrey Rodman Founder, Polycom, and CTO, Polycom Voice Solutions Group Polycom Jan Linden VP, Engineering Global IP Solutions Julian Spittka Product Manager and Senior Engineer - Audio/Video Group Skype A. Ryan Heidari (Moderator) Director, Technology and Product Marketing Qualcomm Inc.

3 Average Throughput (Kbps) Evolution in Wireless Modem LTE 10,000 DO-rev B HSPA+ DOrB 1000 HSDPA 3.6 HSDPA EDGE CDMA 1x DO-rev A EVDO WCDMA 10 AMPS GSM CDMA GPRS

4 Qualcomm Multimedia Codecs Video Codecs: MPEG-4 Simple Profile H.263 Profile 0/3 H.264 Baseline RealVideo v10* Windows Media v9* Audio Codecs: EFR AMR-NB all rates AMR-WB all rates* AAC up to 48kHz* AAC Plus - up to 48kHz* Enhanced AAC Plus - up to 48kHz* QCELP -- 13kbps fixed full and half rates EVRC -- 8kbps fixed full rate EVRC-B--new NB extension of EVRC EVRC-WB* -- new WB extension of EVRC Real Audio v8* Windows Media Audio v9* * Not available on all MSM platforms. For a detailed feature release plan by chipset, please refer to Mobile Video SW Release Plan

5 What is in a QUALCOMM chipset? A Leader in Delivering Wireless Solutions Always Striving to Achieve Semiconductor Excellence CDMA Micro- Processor GSM/GPRS GPS RF PM DSP DSP Memory 3D Graphics Video Audio Imaging Smaller Form Factor Enhanced System Performance Highly Integrated Applications Greater Quality & Reliability Reduced Power Consumption Lower Overall Costs Faster Time to Market

6 Snapdragon Will Enable the Next Generation of Consumer Electronic Devices Snapdragon pairs industry-leading processing capabilities with QUALCOMM s proven wireless leadership

7 Things you always wanted to know, but were afraid to ask Dad, where do codecs come from? There is an evil monster, who lives across the ocean, in the land of MENS. He makes up new codecs whenever he is angered by the X-Men

8 Speech Codecs Landscape Fragmented and mostly driven by fixed network service providers Proprietary 3GPP2 Wireless EVRC-WB EVRC-B EVRC QC8 RT-Audio QC13 Speex SILK ISAC-WB ilbc WMA-WB IP-MR BV16 SVOPC Wireline RNA-10 BV32 3GPP AMR AMR-WB ITU-T G.723 HR EFR G.728 G G.729 G G.728 G.726 G.722 G.711 4kbps 8kbps 16kbps 32kbps 64kbps

9 Linux Operating System is cheap or even free as compared with Sun s own Solaris OS or Microsoft s Windows Open source 'is free like a puppy is free' says Scott McNealy Sun Chief Executive = Hinting at long-term costs and hassles, and occasional clean-up jobs. This is despite of the fact that Sun later released Solaris under an open source licensing as well!

10 ITExpo Introduction Jeffrey Rodman CTO/Co-Founder August 2009

11 Polycom s Vision: A Phone Call can be A phone call an HD Voice session an HD Video session

12 Polycom s Vision: A Phone Call can be a gaming session an HD Voice session an HD Video session

13 Polycom s Vision: A Phone Call can be a gaming session an applications session an HD Video session

14 Polycom s Vision: A Phone Call can be a gaming session an applications session an astronomy lesson

15 Polycom s Vision: And all unified via the IP network

16 Who is Polycom? Founded in 1990 HQ in San Francisco Bay area, global presence Pioneer in Voice, Video, Data, Web conferencing Leader in conferencing and personal communication 2,400+ employees, worldwide Financially strong, publicly traded (NASDAQ: PLCM) >2x the installed base of nearest competition 600+ patents registered or pending

17 What Polycom Does

18 What Polycom Does Wireless 12% Infrastructure 14% 18% Telepresence/Video 50%

19 Polycom Collaboration: From the endpoints Telepresence PERSONAL IMMERSIVE Voice

20 Polycom Collaboration: To The Infrastructure Telepresence Conference Platforms Management Recording & Streaming Security Infrastructure and Applications RMX MGC Family SE200 RSS 2000 VMC 1000 VBP Voice

21 Human Collaboration: HD Voice From the Start Telepresence 2005: HD Voice over IP Desk 2003: HD Voice over POTS 1988: VIDEO with HD Voice Voice

22 Thank You!

23 Global IP Solutions (GIPS) Recognized leader in world class voice and video processing technology for IP networks GIPS s/w is deployed in over 800 million end-points Enables developers to offer the highest quality regardless of network conditions HD Voice since 2001 Jan Linden Vice President Engineering GIPS R&D in speech and video processing for more than 15 years

24 Get the Most Out of HD Voice 1. HD capable microphone 2. High quality HD Voice codec Suitable for usage scenario 3. HD Voice Quality Enhancement Echo cancellation, noise suppression, gain control, 4. End-to-end network HD Voice support Preferably no transcoding Absolutely no narrowband 5. Network clean-up Jitter buffer and packet loss concealment 6. HD capable speaker Just getting an HD Voice codec is not enough!

25 So Many Codec Options RTAudio ipcm-wb BV 32 Speex AAC-LD SILK SVOPC EVRC-WB isac G G.719 G (Siren) G (AMR-WB) G.722 G.718 G.711.1

26 Choosing Speech Codec Many conflicting parameters affect codec choice Complexity Packet-loss Robustness Determines upper limit of quality Delay Memory Support of several codecs necessary Interoperability Bit-rate Speech Codec Cost Usage scenario IPR issues a significant concern Quality Sampling Rate

27 Implementation Cost of a Codec Optimized implementation on a specific platform For speech codecs rarely any IPR issues Video and music codecs very different IPR licensing Pay patent holders licensing fees One-stop-shopping licensing possible but usually, not all IPR holders represented Only this part is usually free for a royalty free codec Indemnification Pay your vendor for indemnification or risk paying unknown IPR holders? Codec IPR A? B C?

28 HD Voice and Wideband Codecs Julian Spittka Skype Wednesday - 09/02/09, 9:30-10:15am

29 Bio Product Manager and Senior Engineer Skype Audio / Video Group Co-Founder of Camino Networks (acquired by Skype) Co-Author of ilbc codec standard (IETF RFC 3951 and CableLabs) 8+ years of experience in IP Communications Master s degree from RWTH Aachen University

30 Commoditization of Communications 1. Move from Circuit Switched Voice to VoIP 2. Move from Firmware/Hardware to Software

31 New Communications World New applications require scalability (e.g. video chat, mobile VoIP, telepresence, ingame chat, live music performances) New distribution models require simple licensing models (e.g. free download)

32 What is needed? Commoditization through codecs that are: Scalable (speech quality, bit rate, complexity) Widely and easily distributable Accessible codec technology Interoperability Minimal number of codecs that cover the operating space

33 What can be done? In May 2009, Skype proposed to IETF to form a working group with the agenda to standardize a wideband codec Skype has submitted its signature default super wideband codec SILK to IETF SILK is available today royalty free to 3 rd party developers

34 SILK Scalable Variable and adaptive bit rate: 6-40kbit/s Sampling rate: 8-24 khz Complexity Portable (Fixed point ANSI C) Lightweight (CPU, memory, code size) Robust to jitter and packet loss Low delay (25ms) More info:

35 SILK Speech Quality MOS scores for wideband speech signals at different bit rates. MOS scores for wideband speech signals at different packet loss rates. All codecs were operated at a bit rate of kbps. MOS (Mean Opinion Score) listening test was performed by Dynastat, an independent 3 rd party laboratory. Confidence intervals (95%) are +/- 0.1 MOS. All bitrates are measured and averaged over frames containing active speech. All audio signals are wideband. SILK and Speex were run in the highest complexity mode.

36 Thank You!