So, if I read this correctly, starting at the top, we have

a dit of five-plus miliseconds of 400Hz (0.00 through 0.05),
followed by an intercharacter break of eight-plus ms of 105.26Hz (audible, but unlikely to be confused with 400Hz),
followed by a dah of something like 18 ms of 400Hz,
followed by a pause of 109 ms at 8.23 Hz (inaudible even to dogs, I think),
... and so on.

The 5+ to 18 is close for the 3:1 dit:dah ratio. the inter-character break of 8 ms doesn't fit so well; and the pause (inter-word break?) is not even close to the 1:7... but maybe it wasn't intended to be. But the next "A" fits less well.

So, if typical CW is like your sample, my theories go up in smoke ...which HAS happened before :-).

In reply to Re^2: Morse code via sound card input by ww
in thread Morse code via sound card input by aristotle73

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.