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Three things you probably don’t know about hd voice

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Slides in support of brief HDVoice presentation given at The CloudComm Summit at IT Expo West 2011 in Austin TX.

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Three things you probably don’t know about hd voice

  1. 1. Three Things You Likely Dont Know About HDVoice Past, Present & Future
  2. 2. What Is HDVoice?Telephony delivering audio performance beyond the legacy PSTN
  3. 3. Early Evolution Of The Telephone 1876 1937
  4. 4. Evolution Of Telephony 1937+1937 2000
  5. 5. HDVoice In Context HDVoice = 100 – >7,000 Hz PSTN = 300 – 3,400 Hz HUMAN VOICE = 80 – 14,000 Hz HUMAN HEARING = 20 – 20,000 Hz20 Hz 100 Hz 1 KHz 10 KHz 20 KHz
  6. 6. HDVoice: A Visual Analogy 40% of original pixel count
  7. 7. HDVoice: A Visual Analogy 80% of original pixel count
  8. 8. Hearing For Yourself Super-Wideband G.722.1C Wideband G.722Narrowband G.711
  9. 9. HDVoice Reduces Workload • Reduced cognitive burden • 90% fewer ambiguities • Increases overall comprehension • Reduces listener fatigue
  10. 10. HDVoice: What’s Required?• Agreement upon a set of HD audio codecs• HDVoice capable equipment – CPE & end-points – Core equipment & services• Assured IP transit for HDVoice traffic – IP-based peering of traffic
  11. 11. Audio Codecs: Then & NowNarrowband Wideband• G.711 = 64 kbps • G.722 = 64 kbps• G.729 = 8 kbps • G.722.2 = 12-24 kbps (AMR-WB)• AMR = 5-12 kbps
  12. 12. Products & Services
  13. 13. End-User Connectivity • IP-based transit is key to staying in HDVoice • Easily supported HDVoice for hosted solutions • SMB with IP-PBX can enjoy HDVoice via SIP trunks
  14. 14. Carrier Peering Via IP • IP-based peering is key to staying in HDVoice • Major CableCo’s rumored to already be peering via IP for cost savings • Voxbone •Incl. peering to Skype • XConnect HD peering •transcodes G.722 - G.722.2
  15. 15. HDVoice Is Already Here!
  16. 16. HDVoice Opens New Doors!• Manhattan School Of Music leverages HDVoice to offer distance learning & real-time collaboration between far-off locations.
  17. 17. Oh, The Things You’ll Do! Business traveler • HDVoice calls to home are longer & less tiring
  18. 18. Oh, The Things You’ll Do! Radio stations • Can hold phone-in shows without sacrificing audio quality • It won’t help talk radio, which will remain a wasteland
  19. 19. Oh, The Things You’ll Do! Restaurants • Order for delivery without phonetically spelling out your address
  20. 20. Oh, The Things You’ll Do! At The Drive Through • Hear & be heard clearly at a drive through
  21. 21. HDVoice Online Resources• http://www.HDVoiceNews.com• http://www.polycom.com/company/about_us/technology/ultimatehd/hdvoice.html• http://www.audiocodes.com/solutions/hdvoip• http://www.ti.com/corp/docs/landing/visionforvoice/multimedia.html• http://www.qualcomm.com/media/blog/2012/05/17/hd-voice-hear-me-loud-and-clear• http://www.spiritdsp.com/promo/hd-sound/• http://www.dspg.com/english/Article.aspx?Item=764• http://blog.cat-iq.org/category/hd-voice-2/• http://www.mgraves.org

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