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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Are speakers that go to 20k Hz really needed? posted by DRam on October 19, 2014 at 19:44:52:
Many would answer no based on "humans can normally hear up to 20 kHz". This statement is incomplete. True, most can't hear a 20 kHz pure note, but most can hear the modulating effects of, say, a 25 kHz signal.
To take an extreme example. Let's say we have a 21.030 kHz signal superposed on a 21 kHz signal, we'll hear a 30 Hz beat signal. That's simple high school physics. Real life is more complicated than this but the principle herein illustrated should be adequately convincing that one can "hear" the effects of signals above 20 kHz.
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Follow Ups
- RE: MATHEMATICALLY, yes - ianm0 22:47:09 10/20/14 (0)
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