I would like to see someone please take this discussion one step further and define the terms "hard" keying and "soft" keying, and describe how either an operator or someone listening would be able to discriminate between the two.

Gary, this topic has been covered in great detail in nearly every ARRL Handbook for at least the last fifty years -- as well as other publications. Some of the most relevant material is covered in articles during the '40s and '50s by By Goodman and George Garmmer. Not all of the material pertaining to "optimum key-shaping" is accurate, but otherwise, the content is still accurate.

Many of us do not like to be held hostage to one rise/fall setting as a "one size fits all" answer to our operating practices. With DSP-generated raised-cosine key shaping, it's now possible to tighten up key shaping at high CW speeds without appreciably consuming additional bandwidth.

Paul, W9AC
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