It may not be any help to you in France, but I was surprised to see that the inexpensive Radio shack audio isolation transformers appear to have quite good extended frequency response, though they do roll off rather steeply below 300 Hz. I am only using 96 KHz bandwidth, but across that range the noise floor seems to be remarkably level.
73, Pete N4ZR At 06:35 AM 6/13/2008, you wrote: >hi > >Question to the audio gurus : > >Is it possible to use AOI (analog optical isolators) between the >softrock and the audio card, instead of reather expensive Triad >transformers ? I found this application note, but have no idea >concerning the effective linearity of such components. I also have no >info concerning the bandwith we can reach with such AOI's (in a >perfect world, 192 KHz of flat response will be ok :-) ) > >Marc f6itu > > >------------------------------------ > >Yahoo! Groups Links > > >
