Perceived pitch depends on listening context, not just the physical spectrum present.

Evidence

The marquee effect model of pitch perception serves as a rough guide to the pitch(es) we perceive. It is a very useful exercise to set up MAX Partials with 12 or 15 partials and manipulate them, watching the effect on the autocorrelation function and listening to the pitch. The pitches heard are definitely context dependent; you hear different things depending on whether you leave the sound on while switching partial strengths, and so on. — Eric J. Heller, Why You Hear What You Hear- An…, 2111

Categorization

• ADDENDUM: Relevant to ‘Grafting & Growth’ only tangentially—but the context-dependence of perception connects broadly to how infrastructure/worldbuilding shapes what is noticed.
• XREF: connects to: Perceived musical qualities like ascending notes reside in experience, not sound waves — Sarah Bakewell, At the Existentialist Café: Freedom,…, 144; Perceived musical pitch arises from regularly repeating acoustic pressure waves. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 774