[AG-TECH] Echo cancelling mics

Christoph Willing willing at itee.uq.edu.au
Mon Nov 8 16:28:19 CST 2004

On 09/11/2004, at 7:34 AM, Jason Soohoo wrote:

> Greetings all,
> I'm sure this question has been asked many many times,
> How well do echo cancelling mics work? Is a Vortex or other echo 
> cancelling hardware still needed with along those mics?
> I'm looking at an AccuMic II and a ClearMic, any thoughts on those?


We have found the AccuMic II to be really excellent for desktop or very 
small room nodes. I've seen them used in a lecture theatre environment, 
but it was a disaster really. By "small room", I mean small enough so 
that all participants can be within about 5-6ft of the unit. That 
probably limits the number of participants. There is an extension unit 
for the AccuMic, which would raise that limit (but also doubles the 

For larger environments, the XAP400 (or Vortex) is essential. I think 
the AP & XAP400 are by far the most widely used in the community, but 
Vortex users are quite keen on their choice too.


Christoph Willing                        Ph: +61 7 3365 8350
QPSF Access Grid Manager
University of Queensland

More information about the ag-tech mailing list