As far as I'm aware there are two companies that produce this technology for the amateur market, BHI in the UK and Michels-Engineering in Germany. The german unit is designed specifically for the extraction of the speech waveform when surrounded by noise. BHI is similar but works with cw as well.
Here are a couple of links to audio samples of both units in operation http://www.ing-michels.de/audio_demonstrations.html http://www.radio.bhinstrumentation.co.uk/html/demonstration.html There is a downside to using these units in that they only work with a mono input so you loose the binaural function. To get around this I purchased two of the internal modules (DX21) from Michels-Engineering and wired them to each stereo channel. This allows independent control of the noise reduction in each ear and retains the AFX/binaural function. 73 Trevor G0KTN ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
