There is an interesting article in Chinese Physics Letters Vol. 21, No. 4,
p. 757 regarding enhancing detection of single tones by adding noise. A
phenomenon with which I am sure almost all topbanders are familiar. The
authors find that detectability can be enhanced by as much as almost 6 dB by
adding white noise. Using the denoiser on the DSP (or using the narrowest
filter) is not always the best strategy!
You can download a copy of the article free for the next week or so at
www.iop.org click on "Journals" and register (which is fairly easy).
Jerry AI6L
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