I was asked to come in and improve the audio/video conferencing situation for a multi-site company that was already using Macs and webcams. It was a mess. We ended up using various bandaids to fix one thing or another, and in the end, they paid as much as they would have for an entry level Tandberg or Clear One system. I found out during that process that a lot of people get to a point where they say "We've got great video, and the audio is pretty good, but there's this feedback!" The entire audio conferencing industry is built around solving this ONE THING...feedback. I took a quick look at the Polycom VS4000, and it seems to have all of the features of a good audio conferencing unit: echo cancellation, noise supression, voice activated gain control. If possible, move the audio processing over to the VS4000. A lot of these units will have an automixer function, for the purpose of switching between multiple mics on the conference table, so that only the one with the highest audio levels is being heard, to help with the echo and feedback issues. I would first get down to only one mic, and test speech. If all is well, check to see if the mics, boundary or otherwise, are going through an automixer at this point. If not, they need to be, in order to not send simultaneous audio from all seven, at various levels and delays. You can purchase multiple input automixers as an addition to the system, if you need to(ex:Intelix AMIX-8). If the single mic is still giving fits, I would then check the settings in the VS4000. If nothing there works, that's where I run out of troubleshooting in the room. Good luck!
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Donald Ritchie Sent: Tuesday, June 06, 2006 9:21 AM To: kxt@kxthelp.com; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: KX-T: conference room installation I have a problem with a conference room installation. The problem is low volume on incoming audio - this is a video / audio conference room, located at a major multi national company. The audio is done with a Biamp Voicecrafter Audio Conferencing Unit. The Biamp mixer is not currently used; there is a small automixer under the conference table. They have tried a verity of microphones; the original install uses seven Shure MX412D/S Mini Gooseneck mics. They are currently trying several "barrier" (or boundary) mics that "SOMEONE" Said should solve the problem, this is not the fact. The problem seems to be some sort of feedback that no one can put a cause on. My theory is it may have something to do with an electronic hybrid or the conference bridge (Sprint) or both Has anyone had any experience with any of these devices, and could lend some counsel. The video is done with a Polycom VS4000 Video Conferencing Unit and seems to work fine. You ask, "why didn't they use Polycom audio conferencing equipment"? - my theory, you can find Polycom stuff on the internet for under a thousand dollars, and couldn't justify the THOUSANDS of dollars that they could get out of this job. Now it's my job to get this overpriced stuff to work, maybe. Thanks Don Ritchie Century Communications Euclid, Ohio -- IF mothers feed their babies with tiny little spoons and forks, do Chinese mothers use Toothpicks? -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.8.2/357 - Release Date: 6/6/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.8.2/357 - Release Date: 6/6/2006 _________________________________________________________________ KX-T Mailing list --- http://kxthelp.com/ Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
