Song

A piece of music as data, with no sound in it: one track for each channel that plays, and how fast its ticks go by.

Import

import { Song } from '@halleyfante/chiptune';

Two tracks at once

<button type="button">Play</button>

<script type="module">
  import { Chip, Note, Player, Pulse, Song, Track } from '@halleyfante/chiptune';

const lead = { duty: 50, volume: 12, envelope: 3 };
  const bass = { duty: 25, volume: 10, envelope: 0 };
  const melody = new Track({
    notes: [
      new Note({ frequency: 659.25, start: 0, length: 15, settings: lead }),
      new Note({ frequency: 783.99, start: 15, length: 15, settings: lead }),
      new Note({ frequency: 1046.5, start: 30, length: 30, settings: lead }),
    ],
  });
  const ground = new Track({
    notes: [new Note({ frequency: 130.81, start: 0, length: 60, settings: bass })],
  });
  const song = new Song({ tracks: [melody, ground], ticksPerSecond: 60 });
  let player;

document.querySelector('button').addEventListener('click', () => {
    if (player === undefined) {
      const chip = new Chip({ context: new AudioContext(), channels: [new Pulse(), new Pulse()] });
      chip.volume = 0.2;
      player = new Player({ chip });
    }

player.stop();
    player.play(song);
  });
</script>

Constructor

new Song({ tracks: readonly Track[], ticksPerSecond: number })

Option	Description
`tracks`	One for each channel that plays.

Properties

Name	Type	Description
`tracks`	readonly Track[]
`ticksPerSecond`	number
`duration`	number	In seconds, of the longest track.