User Guide

The D2 Technesizer is an interactive sound randomizer built on D2 audio technology — every sound is born as a compact peak-and-timing description and rebuilt right in your browser with Cubic Bézier curves. No samples, no presets: every click creates a sound that has never existed before.

Quick start

1. Pick a waveform — or leave it on hybrid for the most variety.
2. Press 🎲 Randomize — a new sound appears in the display as its actual waveform.
3. Press 🔊 to hear it again, as many times as you like.
4. Like it? Press the loop button ⟳ — the speaker inside the circle of arrows — to hear the sound as a seamless, endless loop.
5. Not feeling it? Randomize again. Repeat until something grabs you.

Choosing a waveform

• sine — the purest tone: smooth, round, flute-like.
• tri — triangle: mellow with a gentle edge, like a soft organ.
• square — hollow and reedy; classic chip-tune character.
• saw — sawtooth: bright, buzzy, brassy — cuts through a mix.
• hybrid — the wildcard: 2–4 classic waves blended into one smooth complex tone at a single shared pitch. You set the recipe on the four blend faders below the selector — the most surprising sounds live here.

The blend mixer

When hybrid is selected, four vertical faders — sine · tri · square · saw — set how much of each wave goes into the sound. Set them to a blend you like, then press 🎲 Randomize: every click creates a new sound from that same mix — the pitch, level and octave doublings re-roll, but the proportions stay exactly where you put them. Change the faders and you change what gets randomized. A fader at zero means that wave sits out, and sliding all four to zero hands the recipe back to the dice — a different surprise blend every roll. The mixer only applies to hybrid — pinning a classic wave dims it.

Every roll also picks a random pitch (55–880 Hz) and level, so two rolls of the same waveform never sound identical.

The controls

• 🎲 Randomize — creates a brand-new sound and shows its waveform.
• 🔊 — plays the current sound once more, exactly as generated.
• ⟳ loop — "I like this one": finds the cleanest place to start and end the sound so it repeats seamlessly, then plays it continuously. The arrow ring spins while looping and the button turns green — a ⬇ download button appears beside it: click it to save the looping sample as a studio-quality WAV (32-bit float), named by the sound's seed, ready to drop into your DAW. Press ⟳ again to stop. Randomize and 🔊 also stop the loop.

How the loop button works

When you press it, the Technesizer scans the beginning and end of the sound for the ideal place to cut: two matching peaks — the natural turning points of the waveform — with the same direction, size and position in the wave cycle. Both cut points sit where the waveform's slope is zero and their heights match, so the end flows back into the start with no click or bump: the loop is truly seamless. While it plays, the display switches to show exactly the section that is looping.

The readout tells you what it found, e.g. loop 0.99 s · peaks 3→1618 · join Δ0.0% · seed 4123456789 — that's the loop length, which waveform peaks were joined, and the join error (Δ0.0% means sample-perfect).

Morph — evolve one sound into another

This is where D2 gets interesting. A D2 sound isn't audio — it's a recipe: peak heights, the timing between peaks, and a shape number per segment. Morphing blends the recipe segment by segment, so the waveform itself continuously transforms from one sound into the other. It's not a crossfade: at every moment you're hearing one new sound that genuinely sits between A and B — pitch, brightness and character all glide.

1. Get two sounds into the slots: 📌 pin keeps the sound currently in the display, 🎲 roll deals a fresh one (honoring your waveform pill and blend faders, so A and B can come from the same recipe).
2. Set the duration — how many seconds the A→B evolution takes (2–60 s, default 8).
3. ▶ plays the evolution once: A at the start, exactly B at the end.
4. ⟳ loops it — the render travels A→B then back B→A (a full ping-pong takes 2× your duration) and wraps seamlessly, so the evolution cycles forever with no click. The button turns violet while it loops; press again to stop.
5. ⬇ downloads the whole evolution as a 32-bit float WAV named seedA-seedB-seconds.wav (or …-loop.wav for the ping-pong render while looping) — drop it straight into Ableton as-is.

The readout shows progress, e.g. morph 4.2 / 8.0 s · A 12345 → B 67890. Both endpoint seeds are in every filename, so a morph you love is always recreatable: same two seeds + same duration = the identical render, every time.

The seed

The seed number in the readout identifies the exact roll. The same seed always recreates the same sound, so if you roll something you love, note the seed down and it can always be brought back.

Tips

• Hybrid mode is the best hunting ground for rich, unexpected tones.
• Sculpt a hybrid by ear: nudge one fader between rolls and listen to how the same recipe keeps its character while the pitch and octaves change around it.
• Pin square or saw for retro game-chip sounds; sine for sub-bass and pure test tones.
• Classic waveforms almost always loop with join Δ0.0% — mathematically clean. Hybrids are more organic, so their join stays tiny but may not be exactly zero.
• Trust your ears, not the waveform — a jagged-looking shape can sound wonderful.