I tried to build a soundproof sleep capsule

Show HN: I tried to build a soundproof sleep capsule

Operating in show hn launch, I tried to build a soundproof sleep capsule operates.

Profile

Hi HN,I've struggled with apartment noise for years, so I attempted to engineer a mechanical solution: a decoupled, mass-loaded sleep capsule.I went down a deep rabbit hole involving:- Mass Law vs. decoupling- Building a prototype cube- Accidentally creating a resonance chamber (my prototype amplified bass by ~10dB)- Pivoting to acoustic metamaterials (Helmholtz resonators) and parametric CADThe project was ultimately a failure in terms of silence, but a success in understanding acoustics and regaining a sense of agency. I wrote up the physics, the build process, and the mistakes here.Happy to answer questions about the build.

Its activity falls under show hn launch; the profile below is assembled from public directory data.

The company is listed at the Show HN launch stage of development.

Website: www.lepekhin.com/2026/02/10/Soundproof-Sleep-Capsule