Echo timing and intensity alone can reconstruct a system’s full power spectrum

Evidence

Echoes of the initial velocity kick need not arrive in bursts as short as the kick itself, depending on what has reflected the pulse. The timing and intensity of the echoes can nonetheless be used to find the resonances and indeed the whole power spectrum, as described in this chapter. — Eric J. Heller, Why You Hear What You Hear- An…, 1066

Categorization

• QUESTION: How exactly do the stretched-out echo bursts still encode resonance information? Worth exploring further.