In a classroom, the primary advantage of using an FM system with the receiver connected to the student's hearing aid(s) is that it:

In a classroom, the primary advantage of using an FM system with the receiver connected to the student's hearing aid(s) is that it:

• A. Enhances the effects of classroom noise on the student's speech understanding
• B. Improves the signal-to-noise ratio for the student
• C. Improves speech understanding by extending the frequency response of the amplification system
• D. Converts analog signals into digital signals

Answer: (B)

The key idea is improving the signal-to-noise ratio at the listener’s ear. When the teacher’s voice is captured by a microphone close to the source and sent directly to the student’s hearing aid via the FM receiver, the speech signal arrives with much less background noise and reverberation from the room. This direct delivery means the listener hears a clearer speech signal relative to the surrounding noise, making understanding easier. The other options don’t reflect how FM systems work: they don’t primarily extend frequency range, and while many systems are wired or wireless, the main benefit isn’t converting signals from analog to digital.

The key idea is improving the signal-to-noise ratio at the listener’s ear. When the teacher’s voice is captured by a microphone close to the source and sent directly to the student’s hearing aid via the FM receiver, the speech signal arrives with much less background noise and reverberation from the room. This direct delivery means the listener hears a clearer speech signal relative to the surrounding noise, making understanding easier. The other options don’t reflect how FM systems work: they don’t primarily extend frequency range, and while many systems are wired or wireless, the main benefit isn’t converting signals from analog to digital.