I’ve been working on implementing Envelope Generator into microprocessors. Output of an Envelope Generator consists of rising and falling exponential curve. I’m currently doing table lookup to generate those curves. https://github.com/naokiiwakami/vceg This is a quick and straightforward approach, and you don’t have to be worried much about data resolution. But the program is a little complicated, and memory consuming. I don’t really like this approach. So I started to think about alternative approaches. Mathematically, an exponentially decaying curve can be calculated recursively by the following equation: V(i+1) = V(i) * k where 0 <= k < 1 This is very simple. You can program this such as: but if you … Continue reading Calculating a Decaying Exponential Curve Recursively by using Fixed Point Multiplication