ElizabethHudnott

class Oscillator {
  constructor(waveFunction, frequency) {
    const tableLength = Math.round(sampleRate / frequency);
    const table = new Float32Array(tableLength);
    for (let i = 0; i < tableLength; i++) {
      table[i] = waveFunction(i / tableLength);
    }
    this.table = table;
    this.period = tableLength / sampleRate;
  }

ElizabethHudnott

/*
 * Basic implementation of Phase Distortion Synthesis, like as was used in the Casio CZ series.
 * By Elizabeth Hudnott.
 */

const TWO_PI = 2 * Math.PI;
const TIME_CONSTANTS = Math.log(2 ** (1023 / 128));

function cosine(phase) {
	return -Math.cos(TWO_PI * phase);