The principle of wireless microphone
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- Time of issue:2022-01-14
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(Summary description)The emergence of wireless microphones has completely replaced wired microphones, which has brought great convenience to our lives. So how does wireless microphones complete sound transmission without transmission lines? This article will explain the principle of wireless microphones for you.
The principle of wireless microphone
(Summary description)The emergence of wireless microphones has completely replaced wired microphones, which has brought great convenience to our lives. So how does wireless microphones complete sound transmission without transmission lines? This article will explain the principle of wireless microphones for you.
- Categories:News
- Author:
- Origin:
- Time of issue:2022-01-14
- Views:0
The emergence of wireless microphones has completely replaced wired microphones, which has brought great convenience to our lives. So how does wireless microphones complete sound transmission without transmission lines? This article will explain the principle of wireless microphones for you.
Wireless microphone, short for wireless microphone system, also commonly referred to as wireless microphone, is a kind of audio equipment that transmits sound signals. The receiver usually contains 1 set, 2 sets or 4 sets of receiving circuits, which are used to receive the signals of 1, 2 or 4 wireless microphones respectively. ” or “one for four” and other models.
The transmitting part of the wireless microphone is powered by a battery, and the microphone head converts the sound into an audio electrical signal, and after being processed by the internal circuit, the radio wave containing the audio information is sent to the surrounding space.
The receiving part of the wireless microphone is generally powered by the mains, and the radio waves sent by the transmitting part are received by the receiving antenna, processed by the internal circuit to extract the audio signal, and sent to the sound reinforcement system through the output signal line to complete the audio signal. wireless transmission.
The precautions in the use of wireless microphones are listed as follows:
1) Do not hold the antenna transmitting part of the microphone: For a handheld microphone, the transmitting circuit is located at the lower part of the microphone. If it is held, the transmitting power will be greatly attenuated, thereby affecting the receiving effect;
2) Do not hold the mesh head of the microphone: it will seriously damage the frequency response and be affected by the palm focusing effect;
3) Do not use two or more wireless microphones together: the harmonics between them will modulate each other, causing interference and seriously affecting the transmission, reception and sound quality;
4) The microphone and the mouth should not be too close: 5-10 cm is better, too close will produce a proximity effect and destroy the sound quality;
5) Avoid the microphone directly facing the speaker: form a closed loop, resulting in positive feedback oscillation (howling);
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