The old Bandlimited impulse oscillators for squaresynth turned out to be more noisy than I realized. I’ve rewritten them and they sound much cleaner, and look much cleaner under the spectrum analyzer. Ill be further refining them for a while. But yeah they sound sweet.
Another cause of noisiness has been the Pulse Table. If you make very extreme changes with it, you will get some artifacts. I’ve been mitigating it with interpolation between step values. Which is smoother, but it makes really fast tables sound.. slurry. But there will be improvements in the next update.