Sound latency occurs when playing certain sounds

Bugs with Hopscotch
1

1 sentence description of the problem: I was coding my music on hopscotch and noticed some sounds played later than normal (especially the clap sound), even on the web browser.

Steps to reproduce the problem every time:
(Start in a blank draft if possible)

  1. Create an object
  2. Add two when tapped rules, the first with the gong or clap, and the other with the snare or bass drum.
  3. Play the project and tap the object
    …

I expected this to happen: the gong/clap to play before the snare/bass drum

But instead this happened: the gong/clap played ~0.1 seconds after the snare/bass drum, even though the order says the gong/clap should play first.

Screenshots/video:
(Include project link if relevant)

Left side plays the gong and clap perfectly, the right side plays the clap and snare, but not in near-perfect sync.

Device details:

(You can go to :gear: > “About”, and take a screenshot)

iPad Pro M1 (iPad13,8) iPadOS 18.1 Dev Beta 2, HS version 3.73.0, players 2.2.3 & 3.0.0

(This also occurs on my iPhone 12 Pro Max running iOS 17.4.1)

6 Likes
2

I’m going to downgrade the project to 2.2.3, and see if that makes a difference. It might be player 3.0.0’s fault.

Edit: nope, it didn’t make any difference.

3 Likes
3

Probably it’s just the waveforms, one sound might just have a little silence at the start

4 Likes
4

That’s not the case. The left side plays the clap immediately, but the right side plays it late.

3 Likes
5

Do you mean like panning?

2 Likes
6

Hopscotch doesn’t have panning. I’m referring to the characters on the screen.

Plus, I’d be able to tell if the actual mp3 file was playing late, but in this case, the sound seems to be called late when played with the snare or bass drum…

And surprisingly, the start sound sounds are mp3 files, but the play note files are the larger waveform files… luckily, waveform files can easily be converted to mp3 or m4a without any re-recording needed. The only difference will be the quality, but as long as the bitrate is 256 for mp3 or 128 for m4a, you won’t notice much of a difference (unless you really pay close attention).

3 Likes