Suggestion: option to have a sound play after a certain amount of time looking at the card

AnkiDroid (Android) Suggestions
1

On the PC I use the speed focus mode addon which is essential to what I am studying. Each card will play a noise if I don’t answer it in a specified time. I would really like to be able to do this in ankidroid. It is the only feature keeping me from using it.

3 Likes
2

Add a sound to the template where there is silence at the beginning. Or add two sounds, one responsible for the pause time and the other for the signal.

3 Likes
3

I already have sounds in my cards so I think having a sound on the card template would interfere with that? Maybe I could write some javascript to wait and then play a sound but I’m not sure how that would behave with other sounds on the cards. I also have different times for different decks which use the same notetype so this would require me to split them into separate notetypes to keep the same delay before the sound.

4

The sounds will go in order.

1 Like
5

So yes, they would interfere. My desired functionality is if a sound is playing and the time limit is reached, a sound indicating that will be played on top of the already playing sound.

6

I’m not sure I fully understand what you’re trying to do, but it seems to be easy to implement on any device via JS without needing an specific add-on for it:

function buzz(duration = 1000) {
  const context = new (window.AudioContext || window.webkitAudioContext)();

  const gainNode = context.createGain();
  gainNode.gain.setValueAtTime(0.2, context.currentTime);
  gainNode.connect(context.destination);

  const oscillator = context.createOscillator();
  oscillator.type = "square";
  oscillator.frequency.setValueAtTime(100, context.currentTime);
  oscillator.connect(gainNode);

  oscillator.start();
  setTimeout(() => oscillator.stop(), duration);
}

// Play the "buzz" sound effect after 10 seconds.
setTimeout(() => buzz(), 10000);

Also, you can adjust the sound characteristics programmatically (e.g. pitch, volume, waveform) or even import an external sound file if you already have one in your media collection.

2 Likes
7

That’s super cool and it works on top of other audio in Anki! Imma try it out. Thanks!

8

The sound still plays if I move on to the next card before the timeout triggers. Is there a way to avoid this?

9

This is what I came up with. It plays an audio file and cancels the audio from previous cards:

Front:

var timeoutID;
var audioFile = "alert.mp3";
var delay = 5000;

if (typeof timeoutID === "number") {
	clearTimeout(timeoutID);
}
timeoutID = setTimeout(
	() => {
		const audio = new Audio(audioFile);
		audio.play();
	},
	delay);

Back:
clearTimeout(timeoutID);

10

If you are using a file from collection.media folder, you might want to rename it to “_alert.mp3”, so that if won’t be targeted by unused media removal on media checks

1 Like