Spectrum Analyzer
FreeReal-time frequency spectrum and spectrogram visualization
spectrumfrequencyanalyzervisualize
All Audio ToolsRelated tools
How it works
1
Upload or Record
Add an audio file or use your microphone for live analysis.
2
Visualize
View the frequency spectrum in real time as the audio plays. Switch between spectrogram, frequency bars, and waveform views.
3
Analyze
Identify dominant frequencies, harmonics, and frequency distribution. All analysis runs locally in your browser.
Frequently asked questions
What visualization modes are available?+
The analyzer offers a real-time frequency bar graph, a scrolling spectrogram (waterfall view), and a waveform display. You can switch between them or view multiple at once.
Can I analyze live microphone input?+
Yes. Grant microphone access and the analyzer displays the frequency spectrum of your live audio input in real time. This is useful for tuning instruments or testing room acoustics.
What frequency range is displayed?+
The analyzer covers the full audible range from 20 Hz to 20 kHz. You can zoom into specific ranges to inspect bass, midrange, or treble frequencies in detail.
Is any data sent to a server?+
No. All analysis runs locally in your browser using the Web Audio API. Neither your audio files nor microphone input are transmitted anywhere.