Dana Puopolo’s Guest Commentary, “Let’s Keep AM Sounding Good” (Jan. 19) contains a number of technical errors. Mr. Puopolo’s thesis hinges on the ideas that the thing which causes 5 kHz low-pass ...
Some iPods exhibit a "static" noise -- audible through headphones -- when the iPod is accessing its hard drive. (In general, the better the headphones, the more apparent the static. The issue is ...
Monsieur Fourier did an amazing thing when he figured out how to move between time and frequency domains. Scopes are inherently time-domain instruments, so let's see how much our eyes can tell us ...
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