Resonance chamber
A resonance chamber was a device that augmented the acoustics of any sound made inside.

The fourth intersect in Jefferies tube twenty five on the  acted as a resonance chamber. According to Nella Daren, who'd discovered this fact after exploring the starship, it was "the most acoustically perfect spot on the ship." She shared this with Jean-Luc Picard in 2369. ()

See also
 Harmonic resonance chamber
Technology