Microphone Spectrum Test
Visualize your voice’s frequency distribution in real time to judge whether it is full, distorted or missing highs.
Microphone spectrum test
Visualize the frequency distribution of your voice in real time.
Speak normally — healthy mics show full low/mid response with a natural roll-off at the top.
How to read the spectrum
The spectrum splits live sound into frequencies: left to right is Hz, height is energy. Speaking normally, energy sits in the vocal band:
Signs of a healthy mic:
Full low/mid: solid response around 100Hz–4kHz — clear, satisfying voice.
Natural roll-off on top: highs taper smoothly, not abruptly cut or spiking.
Tracks your voice: columns sit near the floor when silent and rise as you talk.
Warning signs:
Highs constantly loud and spiky: possible hiss or too much boost.
Highs missing entirely: a stuffed, muffled sound — often over-processed.
A low lump: possibly a 50Hz mains hum or a room resonance.
Frequently asked questions
How do I read the spectrum?
Frequency runs left (low) to right (high), and column height is energy. Healthy speech is fullest in the mids, tapers smoothly at the top, and sits flat when silent.
Why are the highs constantly high and spiky?
Could be mic boost cranked up, or an electrical hiss/EMI. Lower boost and check the noise test.
My spectrum has almost no highs?
That makes your voice sound stuffed and muffled — often over-aggressive suppression or a cheap capsule with weak treble.
There’s a strange low lump in the spectrum?
Often a 50Hz mains hum or room resonance. It’s usually a cable or grounding issue rather than the mic itself.