December 30, 2013

Multiple Audio Inputs into @LifeSizeHD Icon Systems

Screen Shot 2013-07-16 at 5.23.11 AM

Screen Shot 2013-07-16 at 5.23.11 AM

The LifeSize Icon 600 is a nice little codec for basic conference room applications. However, once you go beyond a basic system that can use the LifeSize mic pod or the LifeSize 2nd Generation phone system for audio input, you have to get a little creative on how to get audio into the codec. (Previous post showed how to make the audio input redirect to the HDMI output for local PC audio output).

ceilingMicWhite_large_700x600I have really liked using the ClearOne Ceiling Mics over the years and they have proved to work well with a variety of mixers and DSPs (If you read the manual, ClearOne makes it sound like there is no way it will work unless you use a ClearOne solution). Recently we installed several icon using the Clearone mics and a simple mic-mixer that fed directly to the icon. Note: The Icon has to do the echo cancellation, there is no way to turn it off yet.

But that left the problem of how to get the PC audio into the unit when the one audio input is being used by the mic mixer. Luckily, the DVI input supports audio (yes, I know that is not part of the DVI standard). In the case where we were using a Kramer presentation switcher, it was very easy to just take the HDMI out of the switcher (which has audio) and use the LifeSize provided HDMI to DVI cable to connect the switcher to the codec. Of course, this would also work with any computer that can provide an HDMI output.

Screenshot 2013-12-30 17.03.19However, we often still find PCs that are using a standard HD-15 VGA plug, and a 3.5mm audio output, making it a bit more tricky. Luckily, we found a little connector that will take a DVI to VGA+3.5mm Audio. The cable was designed for going from DVI to VGA and de-embedding the audio from the DVI (so the audio port is labeled Audio Out), but it seems to work well in the other direction as well. Right now, I have been purchasing them off of ebay (Search for “DVIto VGA output Video adapter with Stereo Audio Cable ForProjector monitor3.5mm”, currently listed here).


2 Comments on “Multiple Audio Inputs into @LifeSizeHD Icon Systems

April 13, 2015 at 9:19 pm

We have the Icon as well and if you have a PC with a video card that is capable of outputting audio via HDMI/DVI, then you do not need the 3.5mm audio cable at all.

Here’s our set up…
PC [DVI] –> to [DVI] Icon 600 [HDMI] –> [HDMI] TV.

The PC we have is a DELL Optiplex 9020. The graphics card in the PC is a AMD Radeon 8490.

I believe the desktop Intel Integrated graphics are also capable of outputting Audio via DVI/HDMI/DPort. As long as the driver supports it, it should be able to output audio via that digital interface.

J Scott Christianson
April 14, 2015 at 10:25 am

Yes, I have seen that some Dell’s output the audio on DVI. I guess this is not a standard for DVI, but works more and more. Thanks for the information on your configuration!



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