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Topic: Sending Messages in Morse Code
Replies: 16   Last Post: Aug 25, 2000 8:04 PM

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John Savard

Posts: 601
Registered: 12/8/04
Re: Sending Messages in Morse Code
Posted: Aug 5, 2000 9:14 AM
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On 05 Aug 2000 10:35:21 GMT, guymacon@deltanet.com (Guy Macon) wrote,
in part:

>Did you facter in the fact that Morse Code already has some compression?
>The more common letters use fewer dots and dashes.


Yes and no.

I did factor in the different lengths of the Morse Code characters;
the precise way in which I did so, to produce an accurately optimal
code is the primary subject of the web page in question.

However, I was examining their use to transmit an already compressed
and then encrypted bit stream; thus, I wasn't attempting to preserve
an existing compression.

Incidentally, there is one other area in which the technique outlined
might be useful. Earlier cable codes used English and foreign words of
differing lengths as codewords instead of uniform five-letter
codewords; this technique could be used to determine the ideal
probability for each codeword.

John Savard (teneerf <-)
http://home.ecn.ab.ca/~jsavard/crypto.htm







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