Frequency Modulation (FM) is a wireless communication technology commonly used in the classroom to overcome the adverse effects of distance and competing noise in communication situations. Using an FM system in difficult listening situations makes communication easier because regardless of the distance between the teacher and the student, the signal is delivered directly to the FM receiver at a consistent volume level.
Personal worn FM systems are assistive hearing devices that can be used by hearing impaired children. They benefit only the single child using the personal device, by picking up the teacher’s voice and directing it into the ear of the hearing impaired child. They filter out the background noise. This is helpful and a necessary learning aid for the hearing impaired child, but it does not benefit the other children in the class. It also only amplifies the teacher’s voice, not the voices of the other students in the room. Therefore, the hearing impaired child cannot hear or learn from the other students talking in the room. Sound enhancement systems used in addition to personal FM assistive technology allows the hearing impaired child to hear other the students and the teacher, including the hearing impaired child as part of the class discussion.
The primary benefit is in the even distribution of the teacher’s voice, not the amplification of the teacher’s voice. In fact, sound enhancement systems allow the teacher to use a conversational tone, because he/she doesn’t have to be concerned with projecting their voice to the back of the room. A teacher can actually speak in a softer more nurturing voice, which is more conducive to learning. The speaker’s voice is more clear, crisp and understandable regardless of the physical position of teacher and the student.
FM Systems use radio frequencies to send sound from a transmitter to a receiver. They work like small radio stations. FM...