Hi Dave,
And for those of us that are "tone deaf" or at least
deficient the ability to change the pitch helps a lot. Two signals
that are the same to me at 800 HZ just seem to move apart as the
pitch is lowered. To look at it another way the absolute difference
between the two signals has not changed but between 800 and 400 hz
tones the percent change has doubled and, at least to me, is very
audible.
73,
Bob
K2TK
David Robertson wrote:
KEITH and fellow Elecrafters. It has
been long known that certain individules have an inablity of decerning
a difference in a pitch of tones that are somewhat close to the same
frequincy. This is comminally refered to as tone deafness.Thats why CWT
is real handy. There are many good CW operators that are tone deaf.
They can hear the tones but if the tones are very close in frequency
they cant tell one from the other other then sending speed and style.
An interesting fact. in a room with
150 people being tested for SONAR which several pair of tones were
played. Some tone pairs were the same frequency, other tone pairs were
offset from each other. You had to mark weather the tones were same,
second tone high, or second tone low.
You had to get %85 right or you
failed. When the test was completed there was only 10 of us that passed.
For us that are not aflicted with
this minor disablity using your brain as a filter for the pitch you
want can make for good cw copy. For people that are tone deaf, get you
contacts using the CWT and good filtering.
So Keith you are not alone but don't
let that keep you from CW
73
DAVE KD1NA
|
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com