Which room improvement does not adversely affect the use of an audio discriminator?

• A. Shutters
• B. Draperies
• C. Carpeting
• D. New Paint

Answer: (D)

An audio discriminator relies on a microphone to pick up and analyze sounds, so the room’s acoustics can influence its performance. Materials that modify how sound is absorbed or reflected—like shutters, draperies, and carpeting—change the energy and reverberation the microphone receives, which can affect detection and increase false alarms or miss true events. Painting a room, on the other hand, is a thin surface coating that doesn’t significantly alter sound absorption or reflection, so it doesn’t meaningfully impact how the audio discriminator senses sounds.