How to identify microphone feedback by ear
When a room rings, quickly locating the frequency region helps an operator make a smaller, more deliberate correction. The feedback test simulates controlled rings so you can practice that recognition without a live PA. This guide explains the listening task and how to read the result.
No microphone, venue recording, or upload is required.
01 · Understand
How it works
Feedback happens when a mic picks up the speakers feeding it, looping until one resonant frequency runs away and rings. That ringing pitch is the room and gear telling you exactly which band to pull.
The test simulates that ring and asks you to identify the frequency. The faster and more accurately you name it, the faster you can cut it on a real console before the audience notices.
This is the same skill as "ringing out" a monitor or PA by ear, finding the resonant peak and notching it, rather than just turning everything down.
Method note
Controlled simulated feedback rings are presented in known regions; accuracy and response time show which parts of the frequency map need another rep.
02 · Run it
How to use it
- 1
Use headphones with real low/high reach
Feedback can ring anywhere from low-mid honk to piercing highs. Speakers that miss those bands make the test impossible to read accurately.
- 2
Listen for the pitch of the ring
A ring has a definite pitch. Hum it back to yourself, matching it vocally helps you locate it on the frequency map before you guess.
- 3
Map the ring to a band
Low-mid "honk" sits around 250–500 Hz, harsh "ring" around 2–4 kHz, piercing "whistle" up at 6–10 kHz. Get into the right neighborhood first.
- 4
Commit fast
On a real show, a timely response matters, but safe level and correct identification come first. Practice choosing a broad region cleanly before narrowing the response time.
- 5
Note your weak bands
Like frequency ID, most people miss one or two regions. Those are exactly what to drill before your next soundcheck.
03 · Read the result
What your feedback score means
How to use this result
A browser simulation does not ring out a venue or account for its gain structure. Protect your hearing and verify every real system in the room.
Fast and accurateYou identified the simulated bands reliably in this run. Keep verifying on varied material; a browser test does not replace ringing out the real room.
Accurate but slowThe band map is forming, but recall still takes time. Use short timed reps while keeping playback at a safe level.
Low accuracyThe tested regions were not yet reliable. Check the headphones and level first, then anchor the three broad ring regions before narrowing the task.
04 · Questions
Questions
What actually causes feedback?
A mic hearing the speakers it feeds, looping until one resonant frequency runs away. Identifying and notching that frequency raises how loud you can go before it rings.
Is this the same as ringing out a room?
Yes: ringing out means pushing gain until the room rings, then notching the resonant peak. This test trains the ear half of that workflow.
Do I need live gear to practice?
No. The test simulates the ring in your browser so you can build the identification reflex without a PA or risk of damaging ears or speakers.
What comes next?
Move into structured live-sound training that adds gain-before-feedback, monitor mixing, and full show-flow drills.
Keep practising
Turn missed rings into safer show-call practice
Keep the weak regions, then continue in Live Sound with gain, monitor, and feedback work tied to the result, not a claim that the room is calibrated.
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