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🎹 Virtual Synthesizer
Design your own electronic sounds, play synth melodies and chords, and record your music online.
1. Synthesizer Presets
2. Oscillators & Sound Generation
3. ADSR Envelope
Attack controls how quickly a note begins. Decay determines how quickly it settles to the sustain level. Sustain controls the held-note level, while release controls how long the sound fades after you let go.
4. Filter & Modulation
5. Delay Effect
6. Interactive Synth Keyboard
Last Note Played — Press a piano key to beginClick, tap, or hold a piano key to play. Multiple notes can sound simultaneously. The keyboard covers two octaves and can be shifted using the octave selector.
Computer keyboard: A W S E D F T G Y H U J plays the lower octave. K O L P ; ' plays the first six notes of the upper octave. Release a key to end the note.
7. Synth Melody Recorder
No synthesizer performance recorded yet.
Record notes, chords, and note lengths. Playback uses the captured sound settings. Recordings are stored only in the current page session; audio and MIDI export are not included.
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A Virtual Synthesizer lets musicians, singers, songwriters, producers, and beginners create electronic sounds directly in their browser without needing a physical synthesizer or music production software.
Whether you're experimenting with synth basslines, creating electronic melodies, or learning sound design, this free online synthesizer offers an interactive way to explore music production.
How to Use the Virtual Synthesizer
Click or tap the piano keys to play notes, or use your computer keyboard for additional control.
Choose from eight sound presets, including synth bass, lead, pad, pluck, retro, and ambient sounds. Customize the controls to create your own electronic tones.
Explore Oscillators and Waveforms
Oscillators generate the basic sounds used in synthesis.
Experiment with sine, triangle, sawtooth, square, and pulse waveforms to hear how different shapes affect the character of a sound.
Use the oscillator mix and detuning controls to create thicker or more layered tones.
Learn About ADSR Envelopes
The ADSR envelope controls how a sound changes over time.
Attack determines how quickly a note reaches its initial level, while decay controls how it settles toward the sustain level. Sustain determines the level maintained while holding a key, and release controls how the sound fades after the key is released.
Try a short attack and release for punchy synth bass sounds, or longer settings for smooth atmospheric pads.
Experiment With Filters and Modulation
The low-pass filter lets you adjust how much high-frequency content passes through the sound.
Use the cutoff and resonance controls to create warmer, darker, brighter, or more pronounced electronic tones.
The built-in LFO can add vibrato or automatically move the filter cutoff for evolving effects.
Add Delay Effects
Delay creates repeating echoes that can add depth and movement to electronic sounds.
Adjust the delay time, feedback, and effect mix to experiment with subtle echoes or more noticeable rhythmic repetitions.
Virtual Synthesizer for Singers and Songwriters
Singers and rappers can use the synthesizer for pitch matching, melodic practice, and experimenting with vocal accompaniment ideas.
Songwriters and producers can create electronic melodies, basslines, chords, and atmospheric textures for pop, R&B, hip-hop, EDM, house, funk, synthwave, and other genres.
Record Your Synth Melodies
The built-in recorder captures notes, chords, and their timing so you can listen back to musical ideas.
You can also copy a text-based note sequence for reference when practicing, composing, or arranging.
Tip: Start with the Deep Synth Bass preset and experiment with lowering the filter cutoff to create a darker sound. Then switch to the Dreamy Synth Pad preset and increase the attack and release times to hear how the same notes can create an entirely different musical atmosphere.
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