How to Solve Wireless Microphone Interference from KTV Song Request Systems
Friends who frequent KTVs may have encountered this situation: upon turning on the song request system and picking up a wireless microphone, an extremely piercing squeal is immediately heard, sometimes accompanied by startling bursts of loud noise. Such sounds are intolerable to any ear. Below, we discuss issues related to wireless microphone interference caused by KTV song request systems.
1. Problem Analysis
When this occurs, some suspect the wireless microphone is faulty, but this is usually not the case. The issue arises because the radiation noise emitted by current KTV song request systems or DVD players is excessively high, interfering with the wireless microphone receiver.
Some song request systems or cheap DVD drives on the market suffer from poor internal circuit isolation, emitting high levels of noise radiation.
2. Solutions
Typically, wireless microphone receivers leave the squelch level preset to a low threshold at the factory to enhance sensitivity and increase operating range. Consequently, they become susceptible to noise interference, leading to loud noise output.
Even at close range, the transmission strength of a wireless microphone constantly fluctuates due to user movement or environmental changes. Whenever the microphone moves slightly or its angle changes, if its signal strength drops below the noise level, noise instantly replaces the microphone signal, causing loud noise bursts from the receiver.
To prevent noise interference, increasing the squelch level prevents noise signals from activating the receiver. However, this significantly reduces receiver sensitivity, drastically shortening the usable distance of the wireless microphone.
1. Problem Analysis
When this occurs, some suspect the wireless microphone is faulty, but this is usually not the case. The issue arises because the radiation noise emitted by current KTV song request systems or DVD players is excessively high, interfering with the wireless microphone receiver.
Some song request systems or cheap DVD drives on the market suffer from poor internal circuit isolation, emitting high levels of noise radiation.
2. Solutions
Typically, wireless microphone receivers leave the squelch level preset to a low threshold at the factory to enhance sensitivity and increase operating range. Consequently, they become susceptible to noise interference, leading to loud noise output.
Even at close range, the transmission strength of a wireless microphone constantly fluctuates due to user movement or environmental changes. Whenever the microphone moves slightly or its angle changes, if its signal strength drops below the noise level, noise instantly replaces the microphone signal, causing loud noise bursts from the receiver.
To prevent noise interference, increasing the squelch level prevents noise signals from activating the receiver. However, this significantly reduces receiver sensitivity, drastically shortening the usable distance of the wireless microphone.