1. relating to sound, hearing, or the science of acoustics
2. designed to control or improve sound quality

Examples

• The concert hall has excellent acoustical properties.
• They installed acoustical tiles to reduce noise in the office.
• The acoustical engineer measured sound levels throughout the building.
• Acoustical foam panels lined the recording studio walls.
• The architect considered acoustical factors when designing the theater.
• Poor acoustical design made it hard to hear the speaker.
• The acoustical treatment improved the room’s sound quality.