@thi.ng/dsp/anti-alias.js

Composable signal generators, oscillators, filters, FFT, spectrum, windowing & related DSP utils

import { HALF_PI } from "@thi.ng/math/api";
const gibbs = (n, i) => Math.cos((i - 1) * HALF_PI / n) ** 2;
const fejer = (k, n) => (n - k) / n;
const polyBLEP = (dt, t) => t < dt ? (t /= dt, t + t - t * t - 1) : t > 1 - dt ? (t = (t - 1) / dt, t * t + t + t + 1) : 0;
export {
  fejer,
  gibbs,
  polyBLEP
};