WAV file with QML SoundEffect audio playback is distorted

Question

My first go at using SoundEffect with QML, and I'm getting mixed results with no clear understanding of why. I can successfully use QML SoundEffect in user interface within an embedded C++ device. The thing I cannot solve is why some WAV files will play perfectly clear, and some will not.

I'm certain my code is correct...its something about how the audio is interpreted. I cannot share the WAV files I'm using...but here's what's happening:

I have two WAV files:

wav_file1_that_works.wav (which is 83kb)

and

wav_file2_that_does_not work.wav (which is 110kb)

Both of these files play just fine in VLC or Media Player or whatever. But when ran through the QML function to play as a feedback for touch on the device, the first WAV file plays just fine, while the second one does not. It does not appear to be a hardware issue as this same issue comes up exactly the same when working on virtual environment. I'm suspecting there is some limitation to using WAV audio within the QT/QML environment? But I cannot find any limits in the documentation. My only suspicion is the file size, or some other specific sound file requirement.

First I declare the sound link to the file:

SoundEffect {
        id: playSound
        source: "qrc:/wav_file2_that_does_not work.wav"
    } 

Then on the UI event it's played (not the exact code, but the event certainly works like this:

MyUiItem {
     
        onMyUiTouched: {
         
            playSound.play();
        }
    }

and file 1 plays perfectly, and file 2 plays, but with a very distorted scratchy sounds.

I probably don't know enough about how WAV file encoding works, but on the surface both files seems to be encoded correctly.

Answer 1

I solved this by refactoring how the app compiles as my WAV file was getting compressed. So unfortunately this was something I discovered that if I let my enterprise deployment system do its thing it compresses everything including all multi-media unless I apply certain parameters to not compress. And so now this works. Thanks for the help.