@thi.ng/dsp/filter-delay.js

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

import { clamp01 } from "@thi.ng/math/interval";
import { Delay } from "./delay.js";
const filterFeedbackDelay = (n, filter, feedback) => new FilterFeedbackDelay(n, filter, feedback);
class FilterFeedbackDelay extends Delay {
  constructor(n, filter, _feedback = 0.5) {
    super(n, 0);
    this.filter = filter;
    this._feedback = _feedback;
    this.setFeedback(_feedback);
  }
  next(x) {
    return super.next(
      x + this.filter.next(this._buf[this._rpos] * this._feedback)
    );
  }
  feedback() {
    return this._feedback;
  }
  setFeedback(feedback) {
    this._feedback = clamp01(feedback);
  }
}
export {
  FilterFeedbackDelay,
  filterFeedbackDelay
};