Audio Frequency Spectrogram & Waterfall Visualizer
Processed in your browser
Visualize audio frequencies over time with a scrolling 2D color waterfall spectrogram and live microphone spectrum analyzer.
Acoustic Waterfall Display
20 Hz (Sub-Bass)
500 Hz (Mids)
4 kHz (Presence)
20 kHz (Air)
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Direct In-Browser Handoff
Acoustic Analysis & Spectrum Suite
Chain this tool with complementary private browser utilities for a complete zero-server workflow:
Helpful Examples
Whistle & Voice Harmonic Analysis
Visualizes voice pitch fundamentals and formant harmonics.
Mic inputHow to Use the Audio Frequency Spectrogram & Waterfall Visualizer
Real-time acoustic spectral analyzer. Renders fast Fourier transform (FFT) time-frequency distribution on an HTML5 Canvas, mapping pitch frequencies from 20 Hz to 20,000 Hz to thermal heatmap color gradients.
Privacy & Data Processing Notice
No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.
Frequently Asked Questions
What does a waterfall spectrogram show?
The horizontal axis represents frequency (low bass on the left, high treble on the right), the vertical axis scrolls with time, and pixel color brightness represents signal amplitude.
Can I test both microphone and local audio files?
Yes. Toggle live microphone input or upload local MP3/WAV tracks for instant spectral inspection.
Related Utilities
Frequently paired browser tools in Audio & Media Tools