Convolution

Oppenheim & Willsky, Ch. 2 — LTI Systems

Signal Pair

Sliding Parameter

Animation

Convolution
y(t) = ∫ f(τ) g(t-τ) dτ

Steps:
1. Flip g(τ) → g(-τ)
2. Shift by t0 → g(t0-τ)
3. Multiply f(τ)·g(t0-τ)
4. Integrate (shaded area) = y(t0)