Upload
michael-graves
View
460
Download
1
Tags:
Embed Size (px)
DESCRIPTION
Slides in support of brief HDVoice presentation given at The CloudComm Summit at IT Expo West 2011 in Austin TX.
Citation preview
Three Things You Likely Don't Know About HDVoice
Past, Present & Future
What Is HDVoice?
Telephony delivering audio performance beyond the
legacy PSTN
Early Evolution Of The Telephone
1876 1937
Evolution Of Telephony 1937+
1937 2000
HDVoice In Context
HUMAN HEARING = 20 – 20,000 Hz
HUMAN VOICE = 80 – 14,000 Hz
PSTN = 300 – 3,400 Hz
20 Hz 100 Hz 1 KHz 10 KHz 20 KHz
HDVoice = 100 – >7,000 Hz
HDVoice: A Visual Analogy
40% of original pixel count
HDVoice: A Visual Analogy
80% of original pixel count
Hearing For Yourself
Narrowband
G.711
Wideband
G.722
Super-Wideband
G.722.1C
HDVoice Reduces Workload
• Reduced cognitive burden
• 90% fewer ambiguities• Increases overall
comprehension• Reduces listener
fatigue
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
Audio Codecs: Then & Now
Narrowband• G.711 = 64 kbps• G.729 = 8 kbps• AMR = 5-12 kbps
Wideband• G.722 = 64 kbps• G.722.2 = 12-24 kbps
(AMR-WB)
Products & Services
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
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
HDVoice Is Already Here!
HDVoice Opens New Doors!
• Manhattan School Of Music leverages HDVoice to offer distance learning & real-time collaboration between far-off locations.
Oh, The Things You’ll Do!
Business traveler• HDVoice calls to
home are longer & less tiring
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
Oh, The Things You’ll Do!
Restaurants• Order for delivery
without phonetically spelling out your address
Oh, The Things You’ll Do!
At The Drive Through• Hear & be heard
clearly at a drive through
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