Our latest webinar on TMCnet was called Voice and Video over IP Communications: Assessing and Improving User Experience. As we already know that video calling is happening and we know how it fits into the UC world, we decided to discuss on this webinar the different issues related to the quality of video calling. The focus was around video, although we did deal with audio as well. For video, there are two main approaches for assessing and improving the quality
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By Tsahi Levent-Levi | June 23rd, 2010 | Filed under Uncategorized
[I talk a lot here about visual communications, but with all due respect to video there's also audio involved in the experience, and it should not be taken lightly. This is why I have asked Ilan Malka to list a few relevant audio algorithms that are commonly used in VoIP, especially in video conferencing.] There are a lot of algorithms out there for audio processing. Some of them are more straightforward than others, such as AEC or AGC; but if
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By guest | June 3rd, 2010 | Filed under Technology
[We're still in the cameras part of our Designing Hardware for HD series. Be sure to check it out!] [This time, I've asked Fabrizio Ghetti, Video System Engineer in our Italian R&D center, to provide a short list of requirements to look for when shopping around for endpoint cameras.] When you go out to shop for a camera for your hardware endpoint design, you will be looking at a lot of brochures showing different specifications. Even if
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By guest | March 3rd, 2010 | Filed under HD VoIP
[This post is part of our Designing Hardware for HD series. Be sure to check it out!] In the last two posts of this series, I’ve dealt with the layouts required for a videophone. In these posts, I’ve shown the range of different layouts that are used in today’s video conferencing terminals, and I’ve even hinted that scaling (up and down) the video streams is often required to support the various layouts. I’d like to elaborate a bit further in
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By Tsahi Levent-Levi | December 14th, 2009 | Filed under HD VoIP
This post is part of our Designing Hardware for HD series. Be sure to check it out! [While I've done my best to cover the various options for HD video chips and the trends in the market, I also wanted to take a deeper dive and explain how we analyze such a chip. In this case, the TI DM6467, which we have selected as the basis for our BEEHD product. For that, I asked Amit Klir, our resident video architecture
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By guest | November 16th, 2009 | Filed under HD VoIP
VoIP Security has long been viewed as another one of those features that no one really needs, but must be in the feature list to win bids. It is also something that companies who have it tout as mandatory and scare the hell out of prospective customers. I hate both ends of this equation, but I do feel that there is something to consider here. R Reddy over at the GIPS blog believes that security threats are real in
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By Tsahi Levent-Levi | August 20th, 2009 | Filed under Standardization, Technology
