Even percussive clang is a superposition of pure sinusoids

Evidence

In spite of the clang one gets by bashing a piece of metal dangled on the end of a string, it is good to remind ourselves that this noise is no more and no less than a superposition of sinusoids, each an atom of sound, as pure as can be. — Eric J. Heller, Why You Hear What You Hear- An…, 806

Categorization

• DEFINE: Establishes the Fourier picture: any complex noise decomposes into pure sinusoidal atoms of sound.