Apps & Tools

Live Spectrum Analyzer

Real-time FFT spectrum from your microphone or an uploaded file, with peak-hold and a click-to-read frequency/note display.

Input Source

Load Audio File

Click the display to read a frequency — — Nearest note: —

Knowledge Base

How to Use This Alongside the EQ Reference

The EQ Frequency Reference teaches you what each frequency band sounds like in isolation. This tool shows you what's actually present in a real signal (your voice, a mix, an instrument) in real time, so you can identify problem frequencies (a resonant boom, harsh sibilance, a buzzing hum) as they happen rather than only in theory.

Reading the Display

The x-axis is frequency on a logarithmic scale (matching how we perceive pitch), from roughly 20 Hz to 20 kHz. The bright, moving bars are the current spectrum. The fainter trailing line above them is peak-hold. The highest level each frequency has reached recently, useful for spotting a brief resonance or spike that the live display alone might flash past too quickly to catch.

Common Uses

Finding the exact frequency of a room hum, mic buzz, or feedback squeal.
Seeing where a voice's energy actually concentrates, compared to where you assumed.
Checking whether a de-essed or EQ'd signal has actually reduced energy in the target band.

FAQ

Q: Why does the display look different for the same sound on different microphones?
A: Every microphone has its own frequency response. A bright condenser and a darker dynamic mic will show genuinely different spectra for identical source material, which is expected and part of why mic choice matters.

Q: Can I use this to check a whole song, not just live input?
A: Yes. Use "Load Audio File" to analyse an uploaded track's spectrum in real time as it plays back.