@thi.ng/dsp/alt.js

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

import { AGen } from "./agen.js";
const alt = (n = 1) => new Alt(n, -n);
const altT = (a, b) => new Alt(a, b);
const altB = (x = true) => new Alt(x, !x);
class Alt extends AGen {
  constructor(_a, _b) {
    super(_b);
    this._a = _a;
    this._b = _b;
  }
  _flip = true;
  copy() {
    return new Alt(this._a, this._b);
  }
  reset() {
    this._flip = true;
    return this;
  }
  next() {
    return this._val = (this._flip = !this._flip) ? this._b : this._a;
  }
}
export {
  Alt,
  alt,
  altB,
  altT
};