You are right about all of that, but the original post (and the original QST letter to which it referred) appeared to be talking about copying a single signal, rather than the complex process of discriminating between two signals close to each other, and it implied some near-universal psychoacoustic preference for the single frequency of 432 Hz. Not 430, not 435, but 432! This supposed preference is what I rejected as junk science. The next thing you know, someone somewhere is going to claim that Elecraft radios soldered with 63/37 solder sound superior to those soldered with a different blend. Al W6LX [who listens at about a D-flat] >> I'll inject some science into the discussion based on my profession of >> electroacoustics. >> 73, Jim K9YC
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