Free tool
Feedback finder
Listens through your device's microphone and flags the frequencies that ring or feed back, with the nearest graphic EQ band to pull down. Nothing is recorded or sent anywhere.
Loudest peak–
EQ band–
Input level–dBFS
Press Start and allow microphone access. Then bring the system up slowly until something starts to ring.
Ringing frequencies
| Frequency | Note | 1/3-oct EQ | Level | Hits |
|---|
Nothing yet. Frequencies that hold steady above the rest of the sound will be listed here, worst first.
How to use it
- Put the phone or laptop where the problem is, usually near the performer's mic or on stage.
- With the mics open, raise the gain slowly. When a tone starts to ring, it shows up red in the list.
- Cut that frequency on your graphic EQ (the 1/3-octave band shown) or with a narrow parametric notch, then keep going to find the next one.
- Raise the sensitivity to catch rings earlier. Lower it if music or a steady hum keeps showing up.
- Phone and laptop mics are not measurement mics. Use the results as a guide and confirm by ear.