NCIDQ IDFX Practice Exam

Which method is NOT suggested for controlling sound in a room?

1. Reducing the loudness of sound

2. Modifying absorption in space

3. Introducing invasive background noise

4. Introducing non-intrusive background sound

The correct answer is: Introducing invasive background noise

Introducing invasive background noise is not recommended for controlling sound in a room because it can actually contribute to a chaotic acoustic environment, making it more difficult for occupants to communicate, concentrate, or enjoy the space. Instead, effective sound control methods focus on reducing sound levels or improving sound quality within a room. Reducing the loudness of sound directly addresses the issue by minimizing the volume of noise sources, which can enhance the overall acoustic comfort. Modifying absorption in space involves using materials that can soak up sound waves, helping to decrease reverberation and echo, which is beneficial for acoustics. Introducing non-intrusive background sound, such as white noise or soft ambient music, can mask and balance out other sounds without becoming a distraction, making it a helpful technique for sound management. In summary, the practice of introducing invasive background noise fails to align with sound control objectives, which prioritize creating a comfortable auditory environment.