Qt 5.14.2 How can I display video via QSoundEffect in ARM embedded linux via ALSA

[Aizzzz]

Hi，I'm trying to display a warning sound in my qt programm. The code likes

QSoundEffect messageWarningEffect;
messageWarningEffect.setSource(QUrl("qrc:/Resources/Msg/danger.wav"));
messageWarningEffect.play();

It works well in Ubuntu, but when I put it in my embedded board, it print

PulseAudioService: pa_context_connect() failed
PulseAudioService: pa_context_connect() failed
PulseAudioService: pa_context_connect() failed
PulseAudioService: pa_context_connect() failed
PulseAudioService: pa_context_connect() failed
PulseAudioService: pa_context_connect() failed

and i search noting in my board about PulseAduio, I also can't modify it's hardware.

Now, I can display in command by aplay, that's means my board has ALSA support. So I wonder how can I use QSoundEffect by ALSA.