Jim, that’s an interesting bit of information. Is that the case even for people who have excellent hearing at higher frequencies? In other words, would people with excellent hearing at higher frequencies also benefit from using a lower frequency side tone?
On Sat, Mar 13, 2021 at 5:45 PM Jim Brown <[email protected]> wrote: > On 3/13/2021 10:48 AM, Sverre Holm (LA3ZA) wrote: > > A CW sidetone pitch of 400 Hz is consistent with what little research > there > > is on this. A paper from 1992 says that "/All subjects improved their > > recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. > > As a retired designer of large sound systems, I had to learn a lot about > acoustics and psychoacoustics (the science of how humans' ear/brain > interprets what we hear). That science tells us that, like most of our > senses, hearing is logarithmic both with respect to frequency and > loudness. This means that our discrimination of one frequency as > compared to another increases with decreasing frequency. That is, we are > better able to separate signals from each other with RX pitch set to > lower frequencies. > > 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 > Message delivered to [email protected] > ______________________________________________________________ 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 Message delivered to [email protected]
