| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | acoustic environment | United States | Urban areas are often characterized by constant background noise from traffic, construction, and other human activities. | 1 |
| 2 | acoustic treatment | United States | Commonly used in recording studios and home theaters to control sound reflections and improve audio quality. | 1 |
| 3 | acoustic treatment in public spaces | United States | Commonly used in theaters, concert halls, and recording studios to optimize sound quality and prevent echoing. | 1 |
| 4 | soundproofing | United States | Common in apartments and condos in urban areas to minimize noise from neighbors and street traffic | 1 |
| 5 | soundproofing techniques | United States | Common practice in urban areas and apartments | 1 |