How Did the Fourier Transform Translate Eridian? A Deeper Insight

In Project Hail Mary, Ryland Grace doesn't use "magic AI" to talk to Rocky he uses Linear Algebra. By applying the Fourier Transform to Rocky’s chord-based speech, Grace decodes alien audio. This mathematical "cheat code" breaks down complex, messy vibrations into their fundamental "eigen-notes," proving that while languages differ, the physics of waves is the universal constant that bridges the stars.