add: GravityFilter

2026-05-20 00:10:37 +02:00
parent b333712d9c
commit 2371d16af8
4 changed files with 57 additions and 0 deletions
--- a/pasada-lib/pd_signal.cpp
+++ b/pasada-lib/pd_signal.cpp
@@ -161,6 +161,16 @@ void diff(std::vector<double>& out, const std::vector<double>& in) {
    }
 }

+std::vector<double> gauss(size_t N, double mu, double sigma) {
+    const double norm = sigma * sqrt(2.0 * kPi);
+    std::vector<double> data(N);
+    for (int i = 0; i < N; i++) {
+        const double x = i;
+        data[i] = std::exp(-0.5 * (x - mu) * (x - mu) / (sigma * sigma)) / norm;
+    }
+    return data;
+}
+
 // Convolution of two polynomials in ascending power order.
 void polymul(std::vector<cplx>& out,
             const std::vector<cplx>& p, const std::vector<cplx>& q) {