Ultrasound · Beyond hearing
Ultrasound is sound above the typical hearing range. The experience does not play megahertz audio; it maps the relationships into an audible sonification.
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Chapter 1 · The physical sound universe
What actually oscillates, what hertz measures, and what the browser only translates into sound.Audible frequency · A rate, not a promise
Hertz counts cycles per second. It helps describe pitch, but does not by itself specify level, timbre, or emotional effect.
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