Passive printed structures — cones, chokes, pinnae — are computation executed in geometry at zero watts and zero latency. One quarter-wave design curve (f = c/4L) governs both vocal projection (2–4 kHz presence band) and elevation perception (6–16 kHz pinna cue band). We design and test 3D-printable acoustic organs that give ordinary microphone arrays elevation sensing for the price of a print.

Awareness without memory resets every morning. We build the layer above the sensor: enrolled voiceprint identity, cross-session continuity, and attention that knows the difference between a family member, a guest, and a television. This is where Mira AI's long-term value lives — the modules stay open; the relationships are the product.

Field-tested doctrine: a robot proves it can hear by moving, not by speaking. We study reflex acknowledgment (direction-of-arrival to gesture in under 300 ms, decoupled from cognition) and response-channel selection — gesture in a crowd, speech at close range — as the foundation of human trust in hearing machines.