Raleigh seo meetup 12 things you probably don’t know about google spreadsheets
Three things you probably don’t know about hd voice
-
Upload
michael-graves -
Category
Technology
-
view
460 -
download
1
description
Transcript of Three things you probably don’t know about hd voice
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