A wireless speaker works by transmitting audio signals without the need for a physical cable. Here's a basic overview of how it functions:
1. Sound Input: The microphone captures sound through its built-in transducer, typically a diaphragm or other sensor, which converts sound waves into electrical audio signals.
2. Signal Processing: The electrical audio signals are then processed within the microphone to optimize the quality and amplify the audio.
3. Transmission: Instead of using a physical cable to send the audio signals to a receiver, a wireless microphone employs radio frequency (RF) or digital transmission technology. It modulates the audio signal onto an RF carrier wave.
4. Antenna: The microphone has an antenna to transmit the modulated RF signal.
5. Receiver: A separate receiver device, typically connected to a sound system or recording equipment, is used to capture the transmitted RF signal.
6. Demodulation: The receiver demodulates the RF signal, extracting the original audio signal from it.
7. Audio Output: The demodulated audio signal is then sent to a speaker, sound system, or recording equipment, where it can be amplified, recorded, or played through speakers for the audience to hear.
Wireless microphones have various types and technologies, including VHF (Very High Frequency) and UHF (Ultra High Frequency) systems, as well as more recent digital wireless technologies. These systems offer the advantage of mobility and flexibility for performers or speakers, as they aren't tethered by a cable.