[Elecraft] Copying CW and Pitch

[Jim Brown]

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