This document discusses the transition to HD Voice and overcoming hurdles to implementing it. It notes that while video equipment makes up a small percentage of revenues, audio usage dominates with over 25 billion minutes of conference calls. The document outlines why HD Voice will provide significant benefits to call centers and conference calls by improving comprehension and productivity. It also discusses various codec options and considerations for HD Voice implementation. Overall, the document argues that HD Voice is essential for high quality communication experiences and its deployment is imminent.
4. I’ve learned something after 30+ years in the
industry
i d t
• Early to market stake in the ground works
Early to market, stake in the ground works
– If you recognize the right trends
– If you team with the right people
– If you have common sense about how people really meet, face‐to‐
f h b h l ll f
face, or virtually
10. But…
• Video equipment is
– Only 20.7% of revenues
• Video usage is
g
– Only 2.6% of revenues
• Audio usage on the other hand is
Audio usage on the other hand is
– 51% of revenues
• And over 25 billion minutes of audio conference call use
And, over 25 billion minutes of audio conference call use
12. “It is not the strongest of the species that survives nor the
It is not the strongest of the species that survives, nor the
most intelligent that survives. It is the one that is the most
adaptable to change” – Charles Darwin
13. What is HD Voice?
Quality
CD ‐
Audio
GIPS Wideband Speech
Std Wideband Speech
(e.g. G.722.2)
(e g G 722 2)
GIPS Narrowband Speech
b d h
Std Narrowband Speech
Implementation (PSTN) Frequency
3.4 kHz 4 kHz 6.4‐7.0 kHz 8 kHz 22.1 kHz
17. May 2009 Industry Professional Poll Question
What has been your experience with HD‐Voice?
13%
47 % Never Tried it
11%
47% 30% Have tried it once or twice
11% Use it all the time or whenever I can
30%
13% Not sure if I've tried it
I ve
g g y,
Potential of HD Voice Light Reading Webinar- May, 2009
• 90 % of the audience had very limited HD Voice experience
18. May 2009 Poll Questions
Where do you think HD‐Voice will make the biggest
impact?
16%
45%
16 % Call Centers
6%
45% Conference calls
33% Video conferencing
33%
6% International-placed phone calls
g g y,
Potential of HD Voice Light Reading Webinar- May, 2009
• Highest expected impact on conference calls and video
conferencing
19. How to Get the Most Out of HD Voice
1. HD capable microphone
2. High quality HD Voice codec
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
p
6. HD capable speaker
21. HD Voice Codec Selection
• Not one codec fits all scenarios
• Packet loss robustness important for VoIP
Packet loss robustness important for VoIP
• Variable bit rate attractive for IP networks
− Automatic adaption to available rate attractive
p
• Packet overhead significant (5 – 32 kb/s)
− Makes low bit rate codecs less attractive
• Low delay very important
• Standard versus proprietary
− Standards usually come at a higher cost
• Complexity an important issue in Mobile VoIP
22. Codecs compared
MUSHRA test results for different codecs
100
90
80
70
60
50
40
30
20
10
0
24. Advancements in Speech Processing Design
More Than Just a Codec
Hardware Issues
Speech Codec
Codec
(Processor, OS,
Acoustics, etc.)
Acoustics etc )
Network Hardware
Coping with
Network VoIP Design
VoIP Design
Power Consumption
Degredation Challenges
Power
Echo
Echo Cancellation
Environment –
Additional Voice Background Noise,
Processing Components Voice Environment Room Acoustics, etc.
25. Why Bandwidth Estimation is Important
• When properly utilized, bandwidth estimation can ensure
consistent, high quality experience
− Fixed bit rate solutions estimate bandwidth once at the beginning of
the call (or not at all) – no flexibility
− Variable bit rate HD codecs adapt to the network
1) Fixed Codec Detects Bandwidth 2) Then Determines Bit Rate 3) Begins Sending Media
32 kbps?
32 kbps it is!
…but bottleneck appearance during the call can cause delays if bit rate is not adjusted
27. Poll Question
Poll Question
•When is your organization planning to utilize or deploy HD
y g g y
(wideband) voice?
• A) 6 - 12 months
• B) 1 - 2 years
• C) 2 - 3 years
) y
• D) 3 - 5 years
• E) Don t Know
Don’t