Qt has a quieter sound than the standard player

danyal

i use this code for record my wav file

QSoundEffect* effect = new QSoundEffect{this};
    effect->setSource(QUrl::fromLocalFile(":/audio/gudok5secMarginPauses1sec.wav"));
    effect->setVolume(1.0);
    effect->play();

but the playback sound is quieter than if I open this file through a
standard Windows Media player
i also use this code

QSound::play(":/audio/gudok5secMarginPauses1sec.wav");

but the result is the same. How can I get the same loud sound as in Windows Media player?