Cool. But have been around a while. I had the good luck to go inside the one at Murray Hill that was built in 1940. https://www.bell-labs.com/anechoic-chamber/

Cool. But have been around a while. I had the good luck to go inside the one at Murray Hill that was built in 1940. https://www.bell-labs.com/anechoic-chamber/ https://www.bell-labs.com/anechoic-chamber/