Classroom audio systems are a great way to provide every student an opportunity to hear
and learn while at school. Studies have demonstrated that the use of classroom
audio systems boosts student achievement, improves student engagement, and
promotes teacher vocal health.
Looking into the different audio systems available can feel overwhelming. It can raise
questions like: Which technology is the best fit? What type of system would
work best for each classroom? What benefits do different systems offer?
Technology Types
Looking at classroom audio systems, two different technologies are generally used—radio
frequency (RF) or infrared (IR) technology. Some similarities exist between
systems, including the use of a teacher microphone and options for handheld
microphones. There are also some key differences.
Infrared (IR) technology is what is used in TV remote controls. With IR, the transmitter
and receiver need to be near each other and have direct line of sight—the
signal doesn’t pass through walls or other obstructions—so IR works best in
classrooms of an average size and shape.
Classroom audio systems built with radio frequency use DECT (Digital Enhanced Cordless
Telecommunications) technology. DECT is the same wireless technology used in
cordless phones and baby monitors. DECT has a greater range than IR and doesn’t
require line of sight between transmitter and receiver, so it is suitable for
larger spaces and odd-shaped classrooms, in addition to regular classrooms. Microphones
on DECT systems are paired to a specific receiver, so interference from adjacent
systems is eliminated.
System Setup
Once a technology is chosen, there are different system setups to consider. These
include portable systems, systems with a central speaker, or systems with fully
distributed audio.
Portable systems can be moved wherever they’re needed—gymnasiums, outdoor or playground,
and classrooms. There is no installation, so the system is simple to get up and
running, and it’s not tied to one room.
Systems with one central speaker offer flexible installation options. They can be installed
above an interactive display to improve multimedia audio in addition to
amplifying the teacher’s voice. They can be mounted to a wall, in a central
location. They can also be set up using a vertical mount, allowing them to be
placed on a desk, tabletop, or the floor.
Distributed audio systems have multiple speakers installed evenly throughout the room,
often in the ceiling. These systems distribute the audio evenly, providing the
same level of audio to the entire classroom. Typical classrooms require four
speakers, but that can be adjusted to fit the size of the room. Distributed
audio systems can often be integrated with a school’s intercom system for quick
and clear communication between classrooms and the office.
Classroom audio systems offer great benefits to teachers and students. Regardless of the classroom setup, there’s an audio system to fit.