Hi Satya, It all depends on how big your room is for coverage, how many participants are present and of course what your budget is.
We have an office node where we regularly use a Phoenix DUET, USB combined loudspeaker and microphone. It is plug and play and does not need drivers. We also use a DUET when we do events or outreach. It is ideal for a small group of people without going to a full blown echo canceller. http://www.phnxaudio.com/products/duet.html Phoenix also make a larger device for larger rooms called the Quattro, again USB with 4 loudspeakers and mics. The Quattro can be daisy-chained to cover larger spaces. http://www.phnxaudio.com/products/quattro2/table/2-quattro-2.html Another plug and play device not requiring drivers is the ClearOne Chat 50, a neat little USB loudspeaker and microphone combination. It is smaller than the DUET, but also very good for personal use or very small groups. I noticed that they now have quite a range on the ClearOne website. You may find a larger one that suits your room. http://www.clearone.com/products/index.php?cat=9 We also tried a Polycom Communicator C100, but it did not work too well. It came with a CD to install drivers, but the CD failed to load giving errors. Finding the drivers on the website was a pain and when they were loaded I found that we still got echo. There is also a VTAS evaluation of other products at this URL. http://www.ja.net/services/video/vtas/productevaluations/ Regards, Paul Kuchar AGSC, Collaborative Working Developments Research Computing Services Room 1.005, Devonshire House University of Manchester, M13 9PL, United Kingdom t: +44(0)161-275 0668 f: +44(0)161-275 6120 e: paul.kuc...@manchester.ac.uk w: http://www.rcs.manchester.ac.uk/about/people/kuchar http://www.manchester.ac.uk http://www.rcs.manchester.ac.uk Regards, Paul Kuchar AGSC, Collaborative Working Developments Research Computing Services Room 1.005, Devonshire House University of Manchester, M13 9PL, United Kingdom t: +44(0)161-275 0668 f: +44(0)161-275 6120 e: paul.kuc...@manchester.ac.uk w: http://www.rcs.manchester.ac.uk/about/people/kuchar http://www.manchester.ac.uk http://www.rcs.manchester.ac.uk -----Original Message----- From: ag-tech-boun...@lists.mcs.anl.gov [mailto:ag-tech-boun...@lists.mcs.anl.gov] On Behalf Of N. Satyanarayana Sent: 18 March 2011 08:17 To: ag-t...@lists.mcs.anl.gov Subject: [AG-TECH] Audio Equipment and Echo Cancellation Device Hi, We have Bosch Mixer Amplifier with two microphones and speakers connected to it. Since we are facing echo problem we would like to know which of the following option is good for a medium sized room intended for virtual class rooms. 1) SOHO echo cancellation card (Vendor is saying it is meant for desktop applications and expressing doubt for medium sized room). 2) Octopus Power Module from Phoenix We are looking for echo cancellation solution having compatibility with BOSCH mixer amplifier. (http://www.anythingaudio.com.au/Bosch-PA-Amps.htm - we have The Plena range of public address mixer amplifier model with us) Does AccessGrid supports above products? Regards, Satya -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
