A wavetable synthesizer does not have one waveform, it has a row of them - and a position control that walks along that row while the note is still ringing. That single idea is why wavetable patches sound like they are alive, and why every modern bass and lead you have heard for fifteen years came out of one.
This brick plays one fixed waveform through one filter - a single frame of a wavetable, held still. Play a long note and listen to how little happens after the attack. That stillness is exactly the problem wavetable synthesis was invented to solve: in Quantum the same note walks through sixty-four of these frames while you hold it.
Five ideas, and the technique is completely demystified.
The smallest unit is a single cycle of a waveform - a few hundred samples, looped. On its own it is just a tone with a fixed harmonic content: bright, hollow, nasal, whatever the shape dictates. Nothing about it changes over time.
Stack sixty-four frames side by side, ordered so that neighbours resemble each other, and you have a wavetable. Frame 1 might be a sine, frame 64 a hard-clipped square, and everything between them a gradual morph from one to the other.
One control decides which frame you are hearing. Leave it still and you have a static oscillator. Move it and the harmonic content changes continuously - not a filter opening, not a crossfade between two sounds, but the waveform itself becoming a different shape.
An envelope gives you a sound that transforms once per note - the classic evolving bass. An LFO gives you a cycle that never settles. The mod wheel gives it to your hand. Velocity makes hard notes brighter in a way no filter quite reproduces.
Wavetable does not replace subtractive synthesis, it feeds it. You still run the oscillator into a resonant filter with its own envelope. What changes is that the thing being filtered is no longer standing still.
They are not ranked. They are good at different jobs.
| Method | What it is | Sounds like | Reach for it when |
|---|---|---|---|
| <strong>Wavetable</strong> | Scanning a row of single-cycle waveforms | Modern, moving, digital | You want the timbre itself to evolve across a note |
| Subtractive | Rich waveform, then remove harmonics with a filter | Warm, classic, analogue | You want a bass, a brass stab or a plucked lead |
| FM | One oscillator modulating another's frequency | Metallic, bell-like, glassy | You want electric pianos, bells or aggressive digital bass |
| Additive | Building the sound from individual sine partials | Clean, precise, organ-like | You need exact control over each harmonic |
| Granular | Chopping audio into grains and replaying them | Textural, smeared, cinematic | You want to stretch a sound past recognition |
| Sampling | Playing back recordings, pitched | Exactly like the source | The real recorded instrument is the point |
You want frame 1 and frame 64 to be genuinely different. A table that morphs from sine to saw gives you somewhere to travel; one that morphs between two similar shapes gives you nothing to automate.
Start where the sound is closed and unremarkable. This is the destination, not the starting point - counter-intuitive, but it makes the next step land.
Fast attack, medium decay. The note now opens up harmonically and settles back, and it does not sound like a filter sweep because it is not one.
Ten to fifteen percent. Enough that a held note never sits perfectly still, not so much that it wobbles. This is what separates a patch from a preset.
With the table already moving, the filter can stay mostly open. Use it to fit the sound into the mix rather than to create the movement.
One value in the verse, another in the drop. Same patch, same notes, a bass that grew - with no second instrument and no layering.
Quantum for the table, Wave Rider for drawing the shapes, Analog Synth for the subtractive comparison, Liquid for what happens after.
Subtractive synthesis makes a static sound interesting by removing parts of it over time. That works, and it is why the classics sound the way they do - but the source never changes, so everything you hear is a filter and an envelope doing their best. Wavetable moves the change upstream. The oscillator itself becomes a different shape mid-note, which produces motion a filter simply cannot imitate: harmonics appearing and disappearing rather than being uncovered and covered again.
A wavetable holds single cycles, not recordings. Each frame is a few hundred samples, looped forever, so pitch is generated rather than stretched - there is no formant shift, no tuning artefact, no multi-gigabyte library. The whole table is smaller than a photograph, which is precisely why it is workable in a browser while a sampled orchestra is not.
Quantum Synthesizer X runs a dual-oscillator wavetable engine with a four-slot modulation matrix, meaning position, cutoff, pitch and amplitude can each be driven by an envelope, an LFO, velocity or the mod wheel. It is the same working method as the desktop wavetable synths people know by name, without the installer or the licence. What a browser genuinely cannot do is covered on the VST alternatives page, and the wider category is set out on the online synthesizer hub.
A synthesizer whose oscillator reads from a table of single-cycle waveforms instead of producing one fixed shape. A position control selects which frame of the table is sounding, and moving that control while a note plays changes the harmonic content of the sound itself.
Subtractive starts with a harmonically rich waveform and removes parts of it with a filter. Wavetable changes the waveform itself. Most wavetable synths do both - the table feeds a filter - but the movement people associate with wavetable comes from the oscillator, not the filter.
No. A sample is a recording played back and pitched. A wavetable frame is a single cycle looped indefinitely, so pitch is synthesised rather than stretched. That is why wavetables stay tiny and stay clean at any pitch.
Yes. Wavetable playback is cheap - it is table lookup and interpolation - and it runs in the browser's native audio code rather than in JavaScript. Quantum Synthesizer X runs a dual-oscillator wavetable engine with 16-note polyphony in a tab.
An envelope for a sound that transforms once per note, an LFO for continuous motion, velocity for expression, the mod wheel for hand control. Start with an envelope: it is the clearest demonstration of what the technique does.
No, but a mod wheel makes wavetable synthesis far more expressive because you can move the position by hand while playing. Any class-compliant USB controller works through Web MIDI with no driver.
The category page the catalog never had. What a browser synth is, how wavetables work, how an 808 is built, and what you give up by leaving the plugin folder behind.
What a browser synth can do, and the five in the catalog compared side by side.
Read it → GuideA sine, a pitch envelope and a glide - the whole 808 recipe, on a grid you can play.
Read it → GuideWhere a browser synth replaces a plugin, and the three cases where it plainly does not.
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