@thi.ng/dsp/madd.js

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

import { AGen } from "./agen.js";
const madd = (factor, start, offset, clamp) => new MAdd(factor, start, offset, clamp);
class MAdd extends AGen {
  constructor(_factor = 1, _start = 1, _offset = 0, _clamp) {
    super(0);
    this._factor = _factor;
    this._start = _start;
    this._offset = _offset;
    this._clamp = _clamp;
    this.reset();
  }
  copy() {
    return new MAdd(this._factor, this._start, this._offset, this._clamp);
  }
  reset() {
    this._val = (this._start - this._offset) / this._factor;
    return this;
  }
  next() {
    let v = this._val * this._factor + this._offset;
    return this._val = this._clamp !== void 0 ? this._start < this._clamp ? Math.min(v, this._clamp) : Math.max(v, this._clamp) : v;
  }
}
export {
  MAdd,
  madd
};