Interesting. I liked the journalistic narration style at the beginning, which I think was done better than in your previous stories. It reminded me of Jules Verne somehow. However, towards the end, the language became more abstract. I think in such a short story, you can't really afford to change the narrator that much.
As for content, I thought it was brilliant. I did briefly look up the Anechoic Chamber afterwards, and I am intrigued by some of the geometric shapes they make. I'm not too sure where the guy with the urn fits in, but maybe that's just because I'm tired

Nice story. I always enjoy your writing.