Whenever an instrument produces a note, its volume creates a certain shape as it changes over time. A piano note, for example, has a near-instant onset and drops to silence after the key is released.

There are no subtle wah textures; the 440 is all about in-your-face filter goodness, with a host of intuitive, faithfully recreated tones. Best multi-effects pedals 2025: Our pick of the best ...

If there’s one effect pedal that can give you that instant funk-bass sound, it’s unquestionably the envelope filter. The first, and still widely considered the best, is the Musitronics Mu-Tron III.

There are a few ways of playing .WAV files with a microcontroller, but other than that, doing any sort of serious audio processing has required a significantly beefier processor. This isn’t the case ...