CW Tone
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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
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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:
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On Sun, 25 Jan 2009 00:43:22 -0500, you wrote:
>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 peopl >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 > > What am I missing here? Does tone-deafness cause an inability to detect the "warble" one hears when tuning with the spot button pressed? I have begun using the CWT most of the time now. Not because I can't tune accurately with the spot tone, but because it is faster. Tom, N5GE http://www.n5ge.com http://www.swotrc.net _______________________________________________ Elecraft mailing list Post to: [hidden email] 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
Amateur Radio Operator N5GE
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Tom,
What you are missing is the ability to even conceive of the problem we tone-deaf folks have. Yes, we can hear the 'warble', and once detected it is easy to get the warble rate down very close to zero. The real problem for some of us is in getting the two tones close enough to produce that 'warble'.. I can hear two tones, and know that they are different, but my brain cannot determine if I should increase or decrease the frequency of the signal to get the two tones closer in pitch. For those who share my difficulty, tools such a Spectrogram and in the K3, the CWT indicator are valuable aids. 73, Don W3FPR Tom, N5GE wrote: > What am I missing here? > > Does tone-deafness cause an inability to detect the "warble" one hears > when tuning with the spot button pressed? > > I have begun using the CWT most of the time now. Not because I can't > tune accurately with the spot tone, but because it is faster. > > Tom, N5GE > http://www.n5ge.com > http://www.swotrc.net > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.176 / Virus Database: 270.10.13/1914 - Release Date: 1/24/2009 8:40 PM > > Elecraft mailing list Post to: [hidden email] 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 |
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On Sun, 25 Jan 2009 13:17:05 -0500, you wrote:
>Tom, > >What you are missing is the ability to even conceive of the problem we >tone-deaf folks have. >Yes, we can hear the 'warble', and once detected it is easy to get the >warble rate down very close to zero. The real problem for some of us is >in getting the two tones close enough to produce that 'warble'.. >I can hear two tones, and know that they are different, but my brain >cannot determine if I should increase or decrease the frequency of the >signal to get the two tones closer in pitch. > >For those who share my difficulty, tools such a Spectrogram and in the >K3, the CWT indicator are valuable aids. > >73, >Don W3FPR Don, Thanks for the explanation. Now I understand. Tom, N5GE http://www.n5ge.com http://www.swotrc.net [snip] _______________________________________________ Elecraft mailing list Post to: [hidden email] 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
Amateur Radio Operator N5GE
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