Delayed Sound Reproduction on Mobile Platforms

Problem Description

Activating Sound FX on Mobile is slow and delayed and ruins flow of the game.

Attach a Capx

https://drive.google.com/file/d/0BxfeEt ... sp=sharing

Description of Capx

Upon pressing the 'Sound Activation' button, the sound effect playing is delayed and ruins the focus and fun of the game.

Steps to Reproduce Bug

• Step 1: Open project.
• Step 2: Run on mobile Using CJS Launcher app
• Step 3: Press the Red Button and listen for the sound effect delay.

Observed Result

Delayed Sound effects on Mobile Devices.

Expected Result

A rapid response.

Affected Browsers

• Android cJS: (YES!!!)

Operating System and Service Pack

Windows 7 64-bit/Android OS version 4.3

Construct 2 Version ID

r 165

Ashley

By the way thanks for the performance optimizations with GC with 165, More of that is Soo welcome!!:)

If this only happens in CocoonJS, please report it to Ludei. Otherwise please report which browsers are affected.

Thanks for the heads up Ashley , STARTECHSTUDIOS

Hey ludei

I recently experienced this issue as well but only when exporting to CocoonJS... when exporting as Crosswalk it works like a charm...ish still debugging the game) I have "sound/music"that changes whenever I change stages (which is really fast) so I need it to be as fast as possible. I'm getting a "wait" time that wasn't there before.

Ashley

I later tested this .CapX in Chrome browser for Android and it had the same delay problem, thank you for tending to this issue. It has become a big deal in all of my games at this point.

Also in android stock browser --

I think this is just a problem in Android's audio system. We don't implement any delay in our engine, the 'Play' action tells the browser to start playing immediately. If 2 browsers and CocoonJS all have the delay, it's probably the OS.

Ashley

I believe that you don't implement any delay in your audio system, I thought maybe the sound effects were loading into memory before each play, maybe that was causing the delay. I have seen many apps that have instantaneous audio response times on the Android OS -

If you don't preload on startup then there may be a small extra delay on the first playback only, but all subsequent playbacks should be instant.

Ashley

It's interesting that the sound reproduction in chrome browser for desktop is instant.

But the sound in chrome browser on android is like a 250-300 ms delay..

I tried your audio-preload trick, but it didn't make any noticeable difference.

I wish there was a way to work around this issue, I have a bird that flaps, but when his wings move and when the sound hits the users ears are two entirely different events..

STARTECHSTUDIOS - I think that confirms the issue is in Android, or at least some browser code beyond our control. Perhaps on newer devices the latency isn't so bad.

Ashley

Or perhaps you could do some super-genius trick to push the sound into local memory, thereby anticipating its activation, like a race-horse readying itself at the starting gate!

It sounds like you know more about this particular issue than I do.. Upon further inspection, it seems that Android- even on moderately newer devices-has been experiences poorer audio latency depending on the device and OS version. I guess it's something they are trying to fix right now...