Have you ever been to a live audio event, such as a lecture or a concert, and been struck by an unexpected, screeching sound? Wireless mic feedback is enough to make anyone cover their ears or even leave an event they were looking forward to if the sound becomes unbearable. If you’re interested in learning more about this audio phenomenon and how it might affect a show of your own, consider the following information.

What Causes Wireless Mic Feedback?

A public address (PA) system includes a microphone, an amplifier to make the sound from the mic louder, and speakers that project the sound. Unfortunately, this system can also create sound feedback. Essentially, instead of just the singer or speaker’s voice, the sound that is produced and sent out of the speakers is picked up by the microphone again, re-amplified, and sent through the speakers once more. The result is a loud, unpleasant, high-pitched tone.

How Can I Avoid It?

One of the most common culprits of the feedback loop is placing the mic in front of the speakers, where it can easily pick up their noise. To avoid this, many stages and venues place the performer behind the speakers. To hear themselves, the performers are given on-stage monitors, smaller speakers that face the back of the room—so they don’t feed sound into the wireless mic. However, if the performer will be moving around on-stage, it’s better to set them up with in-ear monitors, which allow them to hear their own voice in discrete earbuds. This way, the mic doesn’t pick up anything but their voice.

If you’re interested in learning more about wireless mics and live audio solutions, Audio Images Sound & Lighting of Batavia, NY, can help. They have the knowledge and the equipment to facilitate full-fledged concerts, including audio, video, lighting, and backline gear. To learn more about their offerings, visit the website. You can also call (585) 343-4050 to speak with a professional about your audio needs.