Function fade

fade(
    sound_name: string,
    from: number,
    to: number,
    duration: number,
    id?: number,
): void
Fade a currently playing sound between two volumee.
Parameters
- sound_name: string
  audio clip name - case sensitive
- from: number
  Volume to fade from (0.0 to 1.0).
- to: number
  Volume to fade to (0.0 to 1.0).
- duration: number
  Time in milliseconds to fade.
- Optionalid: number
  the sound instance ID. If none is passed, all sounds in group will fade.
Returns void
- Defined in packages/melonjs/src/audio/audio.js:221