On Mon, Jan 7, 2013 at 11:47 AM, John Ferrell wro= te: > I have been studying DSP for quiet a while now with little success. I > need to do a little lab work if I am ever going to grasp the basics. In > my search for usable hardware I recently found a setup that allows > signal access to the interface between an AD and the DAC. It is intended > to be used with the Arduino Uno but should be adaptable to any > interface. It is available from ladyada.net as a kit for about $22. I > have seen it called "audio Shield" and "wave Shield". I have mine built > but not yet tested due to personal ADHD & other distractions. It would > be best for one to get the specs & info from LadyAda. I found the Wave Shield. Seems interesting for audio output, but I'm not sure it would be able to support what I'm looking for. I will keep investigating though! I have found a guitar stompbox project with a small DSP in it. It seems interesting but it (and a few others like it) seems to be limited to usually one in and one out. > I wear hearing aids which are expensive and not really as good as they > could be. I ordered Logitec earbuds for my laptop so I could watch the > Videos without disturbing others. I am amazed at how much better I hear > that way. Quality Earbuds beat $4000.00 hearing aids. It would be nice > to have a multichannel equalizer included but for now I am planning a > simple stereo amp in my shirt pocket. Mic's probably on glass frames. > People don't really notice earbuds thanks to all the youth running > around using the... > BTW, hearing aids don't even try above 8 khz. That doesn't surprise me too much. I read that one of the main things we lose as our hearing diminishes is selectivity. Our ear/brain combo is quite good at filtering out background noise and deciding to focus on a specific source amidst other competing sounds. With hearing aids, it doesn't work as well. I would be interested to hear about how it goes when you do get your stereo amp -> earbuds working. If I was in your shoes, I start by experimenting with some non portable, stock equipment, just to see how it goes before you build something you can carry yourself. Josh --=20 A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .