On Fri, 5 Jun 2015, g wrote: > On 06/05/2015 03:43 PM, John R Pierce wrote: >> On 6/5/2015 1:33 PM, Michael Hennebry wrote: >>> It's a desktop in an old house. >>> The outlets have ground-fault protection, >>> but the third prong is ungrounded. >> >> not sure how GFI would function at all without a valid ground, unless >> the GFI is wired to neutral, which is dangerous on its own. As I understand it, GFI sums the currents going into each prong. If the sum is not close enough to zero, it breaks the circuit. >> also, things like fluorescent lamps can greatly contribute to hum, >> although that often sounds like a buzz. lamp dimmers too, try >> switching any dimmers in the general area to either 100% on or >> totally off. No dimmers, but I tried turning off the overhead flourescent lights. No effect. >> not really, the wire itself has to be shielded coaxial wire. if its >> actually the headset itself, I'd suggest getting another one. >> >> I've had better luck with USB headsets of late instead of analog >> ones plugged into on-board audio, as the onboard audio microphone >> inputs are generally of very poor quality. > > even with usb headsets, quality/cost is to be considered. > > cheap preforms as cheap is. > > low the price, lower the quality of results. > > you get what you pay for. More precisely, you pay for what you get. Getting what you pay for is iffier. -- Michael hennebry at web.cs.ndsu.NoDak.edu "SCSI is NOT magic. There are *fundamental technical reasons* why it is necessary to sacrifice a young goat to your SCSI chain now and then." -- John Woods