>>> No hearing aids yet. <<< When was the last time you told somebody that their audio is too bassy?
((((73)))) Milverton >________________________________ > From: Richard Fjeld <[email protected]> >To: elecraft posting <[email protected]> >Sent: Thursday, August 8, 2013 4:46 PM >Subject: [Elecraft] Fw: [K3] Hearing aids, meet K3 > > >I've been trying email clients, and had a cockpit error. I wanted to make a >couple comments. > >First to Alan, N5ILN, I do have a copy of Schrader's 'Electronic >Communications". I agree. > >Then, this story: >I began using my laptop at my daughter's house. Pretty soon, people from all >over the house, even from downstairs, converged on me asking why the laptop >was making such a terrible screeching noise. They couldn't tolerate it. I >wasn't hearing a thing. I hit the mute button and they were happy again. No >hearing aids yet. > >I wonder if that affects my preference for CW sidetone around 600 Hz. I think >that is normal?? > >Dick, n0ce > > ----- Original Message ----- > From: Jim Brown > To: [email protected] > Sent: Wednesday, August 07, 2013 4:23 AM > Subject: Re: [Elecraft] [K3] Hearing aids, meet K3 > > > On 8/6/2013 8:45 PM, Don Wilhelm wrote: > > I may b unique because my lower range hearing without the aids is > > normal, so I have built-in low pass filters in my ears. > > That's entirely normal, Don. In general, hearing loss starts at the high > end and moves down. Many folks with a lot of hearing loss still hear a > lot of low end. The exception is when for one reason or another we are > exposed to strong noise at a specific frequencies, or a specific range > of frequencies, in which case we develop a notch in that range. > > The problem is that speech intelligibility depends on sounds in the > range of 500 Hz - 4 kHz, with the 2 kHz octave being most important, the > 1 kHz octave close behind. That's why telephones and ham radio, with > bandwidth limited to about 500 Hz to 3kHz, work just fine. Energy above > 4 kHz helps, but energy below about 350 Hz makes no contribution, and > often makes things worse. The scientists at Bell Labs figured this > stuff out early in the 20th century. > > 73, Jim K9YC > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:[email protected] > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
