Electronic Touch Field

Free Online Virtual Theremin

Play electronic theremin online. Continuous pitch sliding and volume control via mouse pointer or mobile touch.

Quick Guide: How to Play the Online Theremin The online theremin simulates Léon Theremin’s 1920 non-contact electronic instrument. Move your cursor or finger horizontally across the playing surface to shift pitch (left for lower notes, right for higher frequencies) and vertically to adjust volume (down for louder, up for softer). Pure sine oscillator modeling ensures authentic continuous vibrato and portamento glides directly in your browser.
Continuous Pitch & Volume XY Touchpad

Move mouse or drag finger across the field to play continuous heterodyne frequencies

Click & Drag to Play
Acoustic Engine

Dual Antenna Heterodyne Modeling

Replicates non-contact RF heterodyning. Maps horizontal X-axis proximity to continuous pitch frequency and vertical Y-axis to dynamic volume attenuation.

  • ✓ Microtonal pitch bending
  • ✓ Continuous portamento glide
  • ✓ Non-quantized expression
Synthesis
Continuous Sine
Range
C2 – C7
Modulation
6 Hz Vibrato
Playability

Interactive Aerial Touchpad

Simulates hand capacitance using high-precision pointer tracking and multi-touch gestures with zero tactile resistance across desktop and mobile.

  • ✓ Instant visual frequency readout
  • ✓ Continuous vibrato control
  • ✓ Multi-touch gesture support
Tracking
Sub-pixel Pointer
Latency
< 10ms
Input
Mouse & Touch
Tone Profile

Cinematic Sci-Fi & Classical Tone

Produces the soaring vocal soprano timbre famous in 1950s sci-fi film scores, concert theremin literature, and experimental ambient music.

  • ✓ Ethereal vocal-like resonance
  • ✓ Harmonic richness
  • ✓ Zero aliasing artifacts
Waveform
Pure Harmonic Sine
Clarity
Studio Grade
Output
Stereo Audio

Browser Theremin Simulator

Invented by Leon Theremin in 1920, the theremin is played without physical contact. Our Web Audio simulator uses an interactive XY touchpad to map horizontal position to pitch frequency and vertical position to output volume.

Übungs- & Werkzeug-Dashboard

Electro-Acoustic Theremin Übungs- & Kontrollzentrum

Umfassende Tastenkombinationen, Fingersätze, Techniken und Touch-Steuerung für optimales Spiel.

Tastatur-Kürzel

QWERTY-Tastenbelegung

  • Mouse X Pitch Antenna Field (C2 to C7)
  • Mouse Y Volume Antenna Field (Mute to Max)
  • Space Waveform Timbre Select

Theremin Antenna Fields

zones & Techniken

  • Pitch Field (Right)
    Distance to vertical antenna
  • Volume Field (Left)
    Distance to loop antenna
  • Aerial Vibrato
    Rapid hand flutter
  • Portamento Glide
    Continuous frequency slide

Schritt-für-Schritt-Anleitung

Effektives Üben

  1. 1 Move cursor/hand horizontally near pitch antenna for pitch height.
  2. 2 Move cursor/hand vertically near loop antenna for volume control.
  3. 3 Rapid hand flutter creates aerial vibrato.

Profi-Tipps

Technik & Ergonomie

  • ✓ Theremin has zero physical contact — rely on ear training and micro-hand adjustments for precise intonation.
  • ✓ Use left hand volume antenna to mute between notes.
  • ✓ Sine/Triangle waveform blend sounds vocal.

Häufige Fehler

Typische Anfängerfehler vermeiden

  • ✕ Large body movements near antenna altering electromagnetic tuning field.
  • ✕ Playing without volume hand control causing continuous tone drone.
  • ✕ Abrupt hand movements breaking portamento glide.

Mobil & Touch

Tablet- & Smartphone-Steuerung

  • • Interactive 2D touch surface (XY Pad) mapping X axis to pitch and Y axis to volume.
  • • Continuous heterodyne audio oscillator.
  • • Visual antenna field wave lines.

Knowledge Base & FAQs

Virtual Theremin — Frequently Asked Questions

Everything you need to know about our browser-based Web Audio engine, instruments, and music theory workspace.

How does the virtual theremin work?

Our virtual theremin uses heterodyning sine-wave modeling with dynamic vibrato LFO to replicate non-contact aerial control.

Move your cursor or tap to play.

How does a real theremin generate sound without touching?

Theremins use electromagnetic fields around two radio-frequency antennas; hand proximity changes capacitance, controlling pitch and volume aerial.

What do the pitch and volume antennas control?

The vertical antenna controls pitch (closer hand = higher pitch), while the horizontal loop controls volume (closer hand = quieter sound).

Who invented the theremin?

Russian physicist Léon Theremin invented the instrument in 1920, making it one of the earliest electronic musical instruments.

How do you play accurate pitches on a virtual theremin?

Slide your cursor or finger horizontally across the pitch axis while observing the live frequency display.

What film scores featured the theremin prominently?

The theremin is famous in sci-fi and thriller soundtracks, including 'Spellbound', 'The Day the Earth Stood Still', and 'Midsomer Murders'.

Why does the theremin sound like a human opera singer?

Its pure sine wave output combined with smooth pitch portamento and vocal-rate vibrato mimics a soaring soprano voice.

Can I record theremin solos online?

Yes, record your aerial performance and download a downloadable .

webm file.

Is the virtual theremin free for electronic music practice?

100% free with instant browser access for electronic music enthusiasts, students, and composers.

How does Web Audio synthesize theremin heterodyning?

Our engine uses a high-precision sine oscillator node with continuous pitch interpolation and 6Hz vibrato modulation.