[AG-TECH] Tabletop-Room mic with integrated echo canceling
braitmaier at hlrs.de
Thu Jun 21 01:40:53 CDT 2007
I bought the DSP board from Phoenix Audio and not the PCI-Card.
I assembled it in a case which I bought at a online-shop which offers stuff
for electronic devices, and small electrinic parts (e.g. transistors,
So far it worked quit well, however it needs a second to adapt to
changed audio levels, for example if you drastically change
distance between the mic and the speakers or change the volume of the
As I still got some e-mails refering to teh ClearOne AccuMic PC, I want
to mention again:
This microphone is no longer being produced by ClearOne according to our
German reseller for ClearOne products.
Michael Braitmaier schrieb:
> Hi everyone!
> I just wanted to let you all know, what I finally came up with.
> As availability of the ClearOne AccuMic PC is very rare and is not
> produced anymore (according to my national reseller)
> I decided for a solution which is in the beginning a bit more work. I
> ended up buying the following DSP-EchoCanceler-Board
> Basically it does the same as their PCI-Card which however only fits
> in Desktop-PCs. (see link for information:
> In addition to the board I bought some stuff to put everything in a
> small case and have 3.5mm (like they are common among PCs) connectors
> in that case.
> The result is a small echo canceler device that is portable can be
> used with PCs and Laptops and in conjunction with small audio mixers
> like from Behringer it can echo cancel a tabletop and a wireless mic.
> The whole cost only was about 180Euro for the complete box.
> Fields of application for us will be, to quickly equip rooms with
> AccessGrid in conjunction with a table top microphone for conferences
> up to a max. of ~10 people.
> Furthermore usage on exhibitions in conjunctions with wireless mics,
> AccessGrid and our collaborative software is intended.
> I consider that cheap and more flexible even compared to the ClearOne
> AccuMic PC which in Germany was around 650 Euro.
> So that's my 2 cent.
> I might post an entry in AccessGrid.org's hardware section, however I
> am not sure whether that would be of use as you can't buy that box
> but only the parts to assemble it.
> Michael Braitmaier schrieb:
>> Hello everyone!
>> I am a bit in trouble as I need to order a tabletop mic with
>> integrated echo cancelation quite fast, however don't have experience
>> with them. So I would like to rely on your experiences.
>> So can anyone recommend one or two of such mics, which work fine and
>> produce good results, for direct connection into a 3.5mm PC-Audio-in?
>> I have just had a look at the follwoing Clearone Mic (
>> http://www.clearone.com/products/product.php?cat=4&prod=17 ),
>> which seems to be able to work on PCs directly. Does anyone of you
>> already have experience with this one?
>> Thanks in advance
Dipl.-Inf. Michael Braitmaier
HLRS - Visualization / Video Conferencing
University of Stuttgart
Phone: ++49 711 685 65996
Fax : ++49 711 682 357
More information about the ag-tech