Audio fadeIn/out

[tatsmaki]

Description

In my projects I usually extend three Audio to add new functions like:

declare module "three" {
    interface Audio {
        fadeIn(volume: number, duration: number): void;
    }
}

THREE.Audio.prototype.fadeIn = function (volume, duration) {
  const { currentTime } = this.listener.context;

  this.gain.gain
    .setValueAtTime(0, currentTime)
    .linearRampToValueAtTime(volume, currentTime + duration);
};

Do you think some basic audio gain/volume interpolation may fit the library?

Solution

Just wanted to know maintainers opinion on this before doing any PRs.
Cuz maybe you say this logic does not belong to three Audio and should be implemented on project basis

Alternatives

1. extending prototype
2. patch-package
3. fork

Additional context

No response

[Mugen87]

Given that AnimationAction provides fadeIn() and fadeOut() for animations, I personally like the idea of having both methods in the audio space.

@mrdoob What do you think?