Since its release late Saturday, Skype for iPhone 2.0, with its support of calling over 3G carriers and superwideband audio using Skype’s SILK codec, has set the blogosphere awash with two genres of commentary: those who seem to think the end of free Skype calling is approaching as an Armageddon and those who recognize the launch of Skype for iPhone 2.0 as not only setting a new benchmark for mobile voice calling, especially for call quality, but also having a significant impact on the overall smartphone market.

Re the “small fee” (now set to start at the beginning of 2011), I simply say this is one more sign that Skype is a business with investors who are looking for a return. Nobody can argue about its value-add, both in terms of providing international mobile calling convenience but also by delivering a significantly enhanced user experience through establishing a new benchmark for mobile call quality. This outcome definitely justifies a “small fee”, provided it is not obsessive. Alec Saunders, author of the Voice 2.0 Manifesto, positions this issue appropriately in “Skype’s “small fee” is noise, guys”:

Sometimes you have to really shake your head at the quality of the commentary on the internet.  Fact: Skype has finally released a version of Skype for iPhone that supports calling over 3G networks.  Never mind the fly in the ointment that all the commentary is  stuck on – the fact that Skype wants to charge a “small fee” for you to use it on a 3G network.  Frankly, that’s noise.  People will pay for the ability to make a high quality Skype call on 3G, and not pay their carriers long distance termination charges in foreign markets.  So long as the fee is reasonable, nobody is going to object.

Alec goes on to make several points about what the launch of Skype for iPhone 2.0 really means; his post is well worth the read. (Full disclosure: as Canadians who participate in the Canada Pension Plan, Alec and I each have a $17.50 investment in Skype.)

As for the new benchmark for mobile phone call quality, there are several impacts. But first, if you have not heard it already, click here to hear Skype for iPhone 2.0’s “near CD-quality” call first hand between myself and Dean Elwood in the U.K.

Andy Abramson comments on how deeply Skype developers may have gone into the iPhone hardware to achieve this result in “Skype on 3G-Something Borrowed, Something New”; he concludes with:

How good? Well put it this way..why would anyone with an iPhone want to call over old AT&T after their first Skype over 3G call. Oh, and yes, it makes Skype on Verizon sound like, well, a plain old telephone call…..Ma Bell, you’re back sounding like you’re old self. The way the boys in the labs have always dreamed and said you could.

Over at Voyces.com, in “Skype for iPhone over 3G: An Industry Benchmark Game Changer for Skype”, I have commented on the broader impact of Skype for iPhone’s support of SiLK. Simply put, it has the potential to place Skype as a key mobile communications software infrastructure supplier across the entire mobile phone industry. Not simply because of the technology itself but rather as a result of demonstrating high quality voice calls accessible to Skype’s several million users through a single application for the iPhone resulting in several million end user experience – the “Skype network effect”.

With the support of SILK in a smartphone application that runs over both 3G and WiFi, calling costs become almost secondary to an exceptional end user experience with voice quality on mobile devices.

SILK has now become not only a benchmark but also a key communications infrastructure element. End users will pay for a quality experience, especially when it impacts business productivity. Both wireless carriers and smartphone vendors need to rush to ensure they have incorporated Skype’s SILK technology into their offerings. Otherwise the iPhone (iPad and iPod Touch) have one more key feature that sets them apart from the remainder of the smartphone users.

Dean Elwood sums up this “Skype network effect” best when he talks about the Skype “on-net” calling:

The proposition for Skype’s shareholders is the fact that you have to be on the Skype network in order to get the “near CD-quality”. Because you don’t get hi-def when you call a regular landline or mobile, only another Skype-enabled device. So if you want to make free calls to your friends, they all need to get on the Skype net.

and concludes with…….

It’s the mass-market adoption of Skype that makes it work. You need to be on their network, along with other contacts you call regularly, to make it work for you. So in the absence of interconnect, which Skype do not do, your a. n. other mobile VoIP carrier of the future has to start from the ground up.

Bottom line: Dean backs up his observations by telling me that he will be making most of his voice calls using Skype for iPhone when away from his office. It would be most interesting to see not only if this drives more users to using Skype as opposed to the carriers’ voice channels but also the fallout for the transition of communications from a very hardware-oriented infrastructure to a complete software infrastructure operating totally “in the cloud”.

Next: the questions that remain to be answered going forward.

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With the release of Skype 4.0 for Windows beta 3 a year ago February, Skype first introduced their superwideband SILK codec. A month later at eComm 2009, Jonathan Christensen announced SILK’s availability for third party partners with royalty free licensing of the SILK codec. Since then it has been incorporated into all subsequent releases of Skype for Windows 4.x, Skype for Mac 2.8 and Skype for Linux. Recently Skype announced that the SILK codec will be supported in the next release of Skype for iPhone.

What does the SILK bring? Basically the best quality “in-your-head” audio available for voice conversations. To recall Jonathan Christensen’s highlights at the time the SILK codec was first introduced, the focus was on:

improving the audio bandwidth out to 12,000 Hz (12KHz)

providing bandwidth management to deal in real time with degraded  network conditions

balancing the codec optimization between voice, music and background noise, each of which can have an impact on the overall user experience

overall robustness to provide a more consistent user experience, regardless of network conditions and an individual caller’s voice signature.

From a user perspective, one will notice crisper conversations, easier interpretation of accents and an overall high quality “in-your-head” voice experience.

But there have been other consequences of SILK’s availability:

• The FREETALK Everyman Headset for Skype ensures that users get the full benefit of SILK by providing an audio chip that effectively replaces the PC’s native audio chip to bring consistently the full benefits of the audio quality available with SILK.
• Similarly the more recently introduced FREETALK Freedom Wireless Stereo Headset also supports SILK’s audio bandwidth.
• A push-to-talk offering, Blabbelon, which provides the ability for gamers to communicate in a multi-party voice algorithm used by gamers, has incorporated the SILK codec, setting a new standard for gaming voice sessions.

But here’s the bigger picture: in order to have a voice conversation that takes full advantage of SILK, the end points of the conversation must incorporate the SILK codec and the telecom infrastructure must support the transmission of SILK conversations.

• The three Skype clients make this possible for end-to-end Skype-to-Skype calls between PC’s (and iPhones with the next Skype for iPhone release);
• Invoking SILK in Blabbelon by default results in every call participant’s taking full advantage of SILK since it is incorporated into the SILK client.

Incorporation into Skype for iPhone will only take advantage of SILK should the other party also be on a Skype client. But:

• SILK is not currently supported in the recently released Skype for Symbian.
• Nor will it be used in the Skype clients being developed for use by Verizon customers due to the need to link the user’s smartphone to Verizon’s Skype gateway using the underlying 3G wireless voice channel.
• SILK cannot be invoked on SkypeOut calls to the PSTN.
• Nor is it supported yet on any other third party smartphone or other end point handset or phoneset hardware.

And therein lies the challenge: how does one propagate SILK such that it becomes available beyond the Skype and Blabbelon worlds? Skype has taken the first step by making the SILK codec available royalty-free and publishing the source code. However, for broadest adoption it needs to become a recognized international standard.

Recently Skype has been working with the IETF’s “CODEC Working Group” as one candidate to be considered in the working group’s effort to identify and standardize a superwideband audio codec that could be widely used across IP-based conversations. In a “Speaking of Standards” post earlier today, Skype releases source code for SILK super wideband audio codec – the details…, Voxeo’s Dan York has provided an excellent detailed background, including both the political and technical considerations leading up to the adoption of such a codec as an IETF standard for interoperability across service providers and end point software and hardware suppliers. He concludes with:

Still to be seen is if there are any additional licensing terms from Skype, but overall this is a great step forward for those of us who want to see better overall audio quality on the Internet. Obviously it’s in Skype’s interest to do this so that the CODEC WG might consider SILK as the codec to standardize on versus the others or creating a new one… but still… it’s great to see. What do you all think?

And it sure helps Skype’s case that Skype has recently hired executives who have IETF working group experience such as Director of Developer Relations, Jason Frischl and Chief Technology Strategist Dr. Julian Rosenberg.

Bottom Line: Ever since the launch of SILK, it’s very noticeable when one is not on a SILK call. SILK can bring significant business productivity advantages when there’s less of “can you repeat that?” or simply misunderstanding of the speaking party. It makes everyone in the family more readily understood during those grandparent Skype video calls. It’s all about improving the end user experience.

There are many efforts to incorporate “wideband (8 Khz)” HD Voice into the telecom infrastructure. GIPS has some excellent wideband codecs; Jeff Pulver is running HD Voice conferences. While HD Voice is definitely an improvement on today’s standard PSTN voice calls it is not up to the quality of SILK-supported calls.

However, spreading SILK’s quality of conversation requires not only the appropriate hardware or client software, as described above, but also support of SILK in the telecom back end infrastructure. Having a standard that every player making the conversation connection possible can work towards would be a major step forward in “clearing up the conversation” when on a voice call.

Update: Skype’s Jonathan Christensen provides an update summary about the SILK codec in his Skype blog post “Advances in audio”. He reiterates the focus he described a year ago:

• improving audio bandwidth going from 8 kHz to 12 kHz, meaning that a SILK conversation sounds like you are in the same room as the person you are speaking with
• providing real-time bandwidth scalability to deal with degraded network conditions
• balancing codec optimization between voice, music and background noise, each of which can have an impact on the overall user experience
• delivering a robust solution that delivers a more consistent audio experience, regardless of network conditions and an individual’s voice signature

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Since its launch in late July, 2009 tens of thousands of FREETALK Everyman Headsets for Skype have been distributed around the world. Its unique combination of superwideband audio support, flat-fold design and stereo plug adapter to become an iPod, iPhone and/or Blackberry speaker headset have provided a  superb listening experience whether taking advantage of Skype’s SILK codec on a PC-based call or listening to your iPhone’s iPod player during a flight (as the author is doing as he drafts this post).

As a steady user of both the FREETALK Everyman or FREETALK Freedom Wireless Stereo headset, both set new standards for voice quality on Skype conversations as well as listening to music or podcasts whether at home, in the office or in a mobile environment.

Kevin Tofel at jkontherun, a blog about mobile devices and experiences, sums it up best in his video:

Dave Cryer at UK-based Geekanoids has also provided an excellent video demonstration of the package and many features on You Tube.

In other recent posts Jonathan Jensen at The Really Mobile Project says, in First Look: FREETALK Everyman headset for Skype,

Build quality and comfort are good, considering the price point of the headset. I was amazed how light it is and would happily wear it for a couple of hours at a time.

Jeb Briliant at aBrilliantBlog writes:

The Everyman Skype headset is fantastic.  It’s a basic stereo headset with a boom mic but it’s much more then that.  I’m no audiophile but I know this, it sounds great on every single call I’ve used it for.  It’s light, small and packs easily into a travel bag.  I’ve taken it on a few trips now and it’s treated me quite well.

Check out earlier feedback posted on Voice On The Web at:

• FREETALK® Everyman: The Bloggers Speak Out and
• FREETALK® Everyman: From Twitterville and More Bloggers

Full disclosure: In Store Solutions has become a client of Denali InterConneXions, publisher of Voice On The Web, building on the author’s previous business development experience with establishing partnerships that can assist with the promotion of a primary vendor’s offerings. A more complete statement will follow shortly.

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Partial disclosure (the full disclosure is at the end): Since receiving Version 1.0 of the FREETALK^® Wireless Stereo Headset about two years ago, it has become one of my few “must have” accessories. I’ll try to keep to the descriptive details and let other bloggers comment on their experiences with it.

In the fall of 2007, In Store Solutions introduced the 5191 FREETALK Wireless Stereo headset; its feature set has resulted in its becoming a best seller amongst Skype headsets and number 1 amongst wireless headsets for Skype. From my experience:

• Its fifteen meter wireless range allows its use around the house; in my particular case the limitation of range to “one room away” resulted from the steel studs in the walls – crossing two walls sometimes made a difference. However, I could readily answer the front door when Fedex came (they only come during calls, right?) or I needed to let the dog out the back door without interrupting a call. I’ve often used them to listen to my iTunes music or listen to podcasts as well while working around the house.
• The audio quality has continued to amaze:
  • Its AvneraAudio^TM chip has supported the various wideband codecs that Skype has provided over the past two years, including the recently released SILK^TM codec with its support of 12KHz audio for Skype calls. In fact, when Skype provided me with samples of audio with progressively larger audio bandwidths – 4KHz (narrow band), 8KHz (wideband) and 12KHz (superwideband supported by SILK) – I could only detect a difference between the 8KHz sample and 12KHz sample when using this headset.
  • But the speakers actually support a wider bandwidth; they support the full 20KHz required for high fidelity music listening.

However, there were issues with the wearing comfort over a long period of time and the robustness of the headband over time. As a result In Store Solutions recently released “Version 2.0” – the Model 5192 FREETALK Freedom Wireless Stereo Headset – with a much more robust headband and redesigned ear pieces including leather padding for improved wearing comfort.

For simplicity here’s a brief comparison of the FREETALK Wireless Headset and the FREETALK Everyman Headset:

Other features include:

• Up to 5.5 hours continuous use per charge (in “ready” mode)
• Continue conversations while the 2 meter charging cable is attached to headset
• includes a compact travel case to contain the headset, USB dongle and battery charging cable

As for the battery management, I have usually kept the charging cable plugged in when at my PC but can readily disconnect when I need to walk away. This is just “gut” feeling due to many years of experience with battery powered devices.

While operating in the same unlicensed rf band as WiFi, I have never encountered interference between WiFi and the headset. So how does this unique WiStereo^TM protocol work in terms of effect on the user experience?

• It’s intelligent enough to work outside any active WiFi channels
• Between 10 to 15 users in the same room have been able to use headsets concurrently.
• It is designed to support the full 20KHz audio bandwidth much more readily and effectively than any Bluetooth protocol
• There is a sideband channel for the control signals that manage Skype calling via the right ear piece.
• It adapts the active rf power levels, in real time, to the distance between the USB dongle and headset.
• If the user goes out of range and returns to within range, the wireless connection is automatically re-established

The Model 5192 FREETALK Freedom Wireless Stereo Headset is available on Skype Stores via the In Store Solutions Shop supporting 40 currencies and 67 countries under “Headsets”. All In Store Solutions products come with a 7-day (from delivery) “No Questions Asked” return policy.

And, which do I use? Everyman or Freedom Wireless? -  both: one on my laptop and the other on my desktop PC.

Full disclosure: In Store Solutions has become a client of Denali InterConneXions, publisher of Voice On The Web, building on the author’s previous business development experience with establishing partnerships that can assist with the promotion of a primary vendor’s offerings. A more complete statement will follow shortly.

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At eComm Spring 2009, Skype executive Jonathan Christensen announced that their recently released SILK codec would be available to third parties royalty-free. Two weeks ago at eComm Europe phonefromhere.com’s Tim Panton gave a presentation “Deploying the SILK codec, How and Why” where he discussed two projects where he was involved in embedding Skype’s SILK codec into a voice-enabled service under projects managed by Dean Elwood’s Voxygen product and services deployment company. From the overview for the presentation:

SILK’s royalty free licensing combined with it’s non-TDM heritage allow us to focus on the user and what they have available instead of obsessing about attempting to manage the network.

Last week came a press release announcing the beta release of Blabbelon, the first browser-based voice chat and push-to-talk tool targeted initially at the Internet gaming market.

As communication companies continue to look for new ways to generate revenue with VoIP applications, keep current customers and lure new ones, Blabbelon enters the market and completely changes the rules of the VoIP game. The first browser-based VoIP chat tool using Skype’s SILK super wideband audio codec, as well as one of the first massively multi-user VoIP services, Blabbelon can handle thousands of simultaneous users at a fraction of the cost per user of other traditional services. Blabbelon provides a platform for a wide variety of users such as: gamers securely competing in team-based quests; businesses running 7,000 person global conference calls; or grandparents taunting grandkids over a game of Facebook Scrabble.

I spent some time yesterday in a Blabbelon session with Dean to experience the service in action. Out of this session came the following points:

• Push-to-talk voice sessions comprise a common feature of Internet gaming sessions; however, Blabbelon brings a new level of ease-of-implementation and ease-of-use, with the goal of having a simplicity of adoption similar to what Skype experienced because you simply installed it and started calling and talking.
• In fact, being browser-based means there is no download required. Once a session leader has launched a Blabbelon session s/he simply needs to distribute a URL to other participants in a game to allow them to join the session.
• It’s push-to-talk but there is a hierarchy established to manage who has “talking” rights. The entire experience of having a discussion is very similar to CB Radio or a “direct connect” two-way radio service where, with the simple push of a button, one can speak instantly to a designated team of participants in an activity, such as a construction project.
• Blabbelon sessions can scale up to more than 7,000 users in a low cost business model. In fact their press release talks about its being ideal for online auctions. Is this the style of voice service that Meg Whitman should have acquired for eBay instead of Skype?
• Use of the SILK codec certainly supplies a crystal clear sound while using a minimal amount of bandwidth – very important for gaming sessions that can become very CPU intensive. Again from the press release:
  

  Users can run Blabbelon in their Web browser, while simultaneously using other online applications – with no impact on their overall network performance, since Skype’s SILK codec was designed to use approximately 50 percent less network bandwidth than previously required, while delivering improved richness in audio quality.”

• As for the initial target market:
  

  Blabbelon will initially focus on a core audience of the millions of online gamers and players of Massively Multiplayer Online (MMO) games such as World of Warcraft (WoW). The combination of Blabbelon’s technology and features and the SILK codec provides a perfect tool for this market, which, because of the cooperative nature of games, needs a no-download, high-quality, secure, reliable and scalable voice chat.

More background from the press release:

Blabbelon was created by a team led by CEO Ed Ikeguchi, former co-founder of Medidata Solutions (Nasdaq: MDSO); Dean Elwood, CEO of telecom provider Voxygen Limited and chief technology strategist of Blabbelon; and Rowena Rubio, CMO and former systems analyst.

Available immediately [as a beta offering] from www.blabbelon.com, Blabbelon is hosted by Rackspace, ensuring the highest levels of chat stability, quality, security and reliability. Blabbelon offers 100 percent uptime through Rackspace’s worldwide network and zero downtime guarantees.

Bottom Line: Blabbelon opens new directions for the application of VoIP technology and the SILK codec. It’s not a voice conversation service along the lines of traditional telephony. Yet it brings new ease-of-use and voice quality to a market that has been poorly served by current offerings. Of course listening to Dean on Blabbelon using a FreeTalk Everyman for Skype headset with its inherent support of the SILK codec ensured that the full benefit of the voice quality available from SILK was experienced.

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