A studio with a negative dB rating. I’ve been in recording studios and noticed the feeling of compression, like wearing closed back headphones for too long. This place sounds a bit scary:

Silence is a truly rare thing. All reverberation is removed… all sounds that aren’t coming from your own body disappear. After a few moments in the anechoic chamber, you’ll begin to feel a touch jumpy. Hearing your heart beat, your blood pulse, the sound of your own ear buzzing and your body functioning like you’ve never heard before has a tendency to be a bit unnerving.