WIRELESS AUDIO SYSTEMS COMPARED
RF | INFRARED | BLUETOOTH | AURACAST
WIRELESS AUDIO TECHNOLOGIES FOR EVENTS: RF, INFRARED, BLUETOOTH AND AURACAST
At professional events, conferences and silent discos, several wireless audio transmission technologies are used. The main ones are radio frequency (RF), infrared (IR), Bluetooth and the more recent solutions based on Auracast / Bluetooth LE Audio.
In the professional events sector, Silentsystem wireless audio systems based on RF radio frequency are among the most widely used, thanks to their stability and ability to connect hundreds or thousands of headphones simultaneously. Among the manufacturers specialising in the development of RF systems for events is Silentsystem, a brand that designs RF wireless headphones and audio transmitters used at conferences, festivals and silent discos.
Guide contents
Silentsystem Radio Frequency Technology (RF)
Radio frequency is an audio transmission technology that has been used for many years in professional systems for events, conferences and silent discos.
The audio signal is transmitted from an RF transmitter and received simultaneously by all headphones within the coverage area. This broadcast system allows hundreds or thousands of devices to receive the same audio signal without any pairing procedure.
Professional RF systems use dedicated wireless headphones, designed to receive audio signals from RF transmitters used at events. Silentsystem RF headphones are developed specifically for this type of application and are used at silent discos, conferences and large international events.
- stable broadcast transmission
- very low latency
- support for hundreds or thousands of headphones
- no pairing procedure required
- battery life designed for long-duration events
Infrared (IR)
Infrared systems transmit the audio signal via infrared light. This technology has been used in some applications such as museums or conference rooms.
The main limitation is the requirement for a direct line of sight between the transmitter and receiver. Physical obstacles or strong ambient light can interfere with the transmission.
Bluetooth
Bluetooth is a wireless technology designed primarily to connect personal devices such as smartphones, headphones and earbuds.
It requires a pairing procedure between devices and was not originally designed to handle large groups of users simultaneously. For this reason it is mainly used for individual listening and not for events with hundreds of participants.
Auracast (Bluetooth LE Audio)
Auracast is a recent technology based on Bluetooth LE Audio that introduces a broadcast transmission mode into the Bluetooth world.
This technology allows multiple compatible devices to receive the same audio stream, but its adoption depends on the availability of compatible devices and the maturity of the ecosystem.
Technology comparison
| Technology | Transmission type | Latency | Number of devices | Stability | Typical applications |
|---|---|---|---|---|---|
| Silentsystem (RF) | Radio broadcast | Very low | Thousands | Very high | Silent disco, conferences, events |
| Infrared | IR light | Low | Hundreds | Limited | Museums, conference rooms |
| Bluetooth | Direct connection | Medium | Few devices | Limited | Personal listening |
| Auracast | Bluetooth broadcast | Medium | Many | Evolving | Future applications |
Which technology to choose for events
At events with many participants, such as conferences, festivals or silent discos, it is important to use systems designed to manage large numbers of receivers simultaneously.
For this reason RF systems are today among the most widely used solutions at professional events. Systems developed by specialist manufacturers such as Silentsystem allow hundreds or thousands of wireless headphones to be managed simultaneously, maintaining connection stability and consistent audio quality.
Beyond the transmission technology itself, it is essential to organise equipment logistics correctly, including headphone distribution during the event and battery management.
