Intense Tech #02 — LSDj Wave Synth Deep Dive, Part 2 (Defense Mechanism)

The second wave-synth lesson of intense-tech: PHASE (and its Resync modes), DIST (Clip, Fold, Wrap), LIMIT and VSHIFT — "how to add some real noisy crunch to your wave sounds", from a silky lead to a gnarly bass (defense-mechanism).

Key claims#

• The number of waveform cycles inside the 32-sample frame is the harmonic that sounds.
• PHASE compresses the wave horizontally. With Phase type Normal, values above 0 squeeze the whole waveform and pad the end with zero-volume samples — "analogous to changing pulse width, aka duty cycle". The "SID lead" recipe: SIGNAL Square, Phase Normal, start Phase 00, end Phase 1F (1E in version 4) — a smoothly modulated pulse lead; Triangle instead of Square gives "an interesting vocal-like lead".
• Resync repeats the compressed waveform until all 32 samples are filled — another way to add overtones, like raising CUTOFF (in version 4 Phase 1F is usually silent). Resync2 repeats without compressing: usually quieter, but still adds harmonics.
• Noise in a frame is grit; "notches" drawn into a sine by hand add it manually.
• DIST decides what happens when VOLUME or Q push samples past 0–F: Clip (default) shaves top and bottom, so a loud sine turns into a square (odd overtones); Fold (new in version 6) mirrors the excess back — higher, more resonant upper overtones, quieter than Clip, more folds with more volume or Q; Wrap carries the excess to the opposite edge — "harshness and buzz", louder than Fold but usually not as loud as Clip, and unpredictable when pushed.
• Recap: one clean cycle = clear and bassy; more cycles = higher harmonics; noise = buzz and less bass; highs come from notches, higher CUTOFF plus Q, PHASE types and values, and DIST with more VOLUME or Q.
• LIMIT (version 6) constrains the samples after VOLUME, CUTOFF, Q and PHASE: F allows 0–F, 5 only 5–A, the excess handled per the DIST type. Needed because the hardware offers only 100 / 50 / 25 / 0 % — the wave channel is "often being too loud at 100% volume but too quiet at 25% or 50%"; different start and end LIMIT values fade a sound (F → 4).
• VSHIFT shifts the samples upwards; in older versions it wrapped like Wrap (a way to add wrapping to a Clip sound); in version 6 it follows the DIST: Clip squashes the wave towards the ceiling (quieter), Fold mirrors it (FF inverts the wave), Wrap wraps from the bottom.

Practical takeaways#

Phase Normal 00 → 1F on a square is the Game Boy's pulse-width sweep on the wave channel; Fold and Wrap are the grit knobs; LIMIT is the missing fine volume control — use start/end values as a volume envelope.

Notable quotes#

"The more noise that occurs within the wave frame, the less clear it will sound, and the more the sound will be colored by the upper overtones."

Pages touched#

wavetable-programming · pulse-width-modulation · instrument-design · volume-slides · lsdj · intense-tech · defense-mechanism · levels-and-headroom