I’m continuing to explore the software side of this project and revisiting the overall signal chain. I realized that, like many classic synthesizers, mixing multiple oscillators first and then shaping the combined sound with a single filter is simply easier to work with.

So I reworked my synth’s signal path and replaced the engine with a more traditional VA structure: three oscillators + noise feeding a single ladder filter.

In parallel, I’ve been working on a TPT/ZDF ladder filter. It’s computationally expensive, but the result is worth it—the filter sounds great, stays stable at high resonance, and handles aggressive parameter changes smoothly.