Waveform Display
Frequency Spectrum
About This Oscilloscope
An oscilloscope displays electrical signals as waveforms over time. This browser-based version captures audio from your microphone and visualizes the sound wave in real-time.
Understanding the Display
- Y-axis (vertical): Amplitude of the signal (-1.0 to +1.0)
- X-axis (horizontal): Time (left to right)
- Waveform shape: Sine = pure tone, complex = multiple frequencies
Common Waveforms
- Sine wave: Smooth curve, pure tone (like a tuning fork)
- Square wave: Flat tops and bottoms with sharp transitions
- Sawtooth: Diagonal ramp with sharp drop
- Speech/music: Complex, irregular patterns
Tips
- Use Trigger mode to stabilize repeating waveforms
- Increase Time Scale to see more detail in high-frequency sounds
- The Spectrum below shows frequency content (bass on left, treble on right)
Looking to turn music into animated geometric shapes instead? Try the Music Visualizer.
Privacy & Limitations
- All calculations run entirely in your browser -- nothing is sent to any server.
- Results are estimates and may vary based on actual conditions.
Related Tools
- Sound Level Meter -- Real-time decibel meter using your microphone
- Speaker Balance Test -- Test left and right speaker balance with audio panning
- Audio Dynamic Range Viewer -- Visualize the difference between quiet and loud sounds in real-time
- Beat Consistency Visualizer -- Measure rhythm timing accuracy by tapping along to music with visual feedback
Related Tools
View all toolsOpus Metadata Viewer
Drag and drop an .opus file to view its embedded metadata and transcription
Tone Generator
Generate pure sine, square, and sawtooth tones at any frequency
Metronome
Simple metronome with adjustable BPM and time signatures
Frequency to Note Converter
Convert frequency (Hz) to musical note name and cents offset
Audio Timer
Timer with customizable audio alerts and chimes
White Noise Generator
Generate white, pink, and brown noise for focus or relaxation
Oscilloscope FAQ
What is Oscilloscope?
Oscilloscope is a free audio tool that helps you Real-time audio waveform visualizer from microphone.
How do I use Oscilloscope?
Enter your input values, review the calculated output, and adjust inputs until you reach the result you need. The result updates in your browser.
Is Oscilloscope private?
Yes. Calculations run locally in your browser. Inputs are not uploaded to a server by default, and refreshing the page clears session data.
Does Oscilloscope require an account or installation?
No. You can use this tool directly in your browser without sign-up or software installation.
How accurate are results from Oscilloscope?
This tool applies standard formulas or deterministic processing logic for estimates. For medical, legal, tax, or investment decisions, verify with a qualified professional.
Can I save or share outputs from Oscilloscope?
You can bookmark this page and copy outputs manually. Results are not persisted in your account and are typically not embedded in the URL.