why the QSoundEffect will play two sources after I change the source

[Mihan]

Hi
when I use a QSoundEffect to play different audio files, I find it will play two files after QSoundEffect::setSource().
e.g.

QSoundEffect *player = new QSoundEffect ();
player->setSource(QUrl::fromLocalFile("/1.wav"));
player->play();

player->setSource(QUrl::fromLocalFile("/2.wav"));
player->play(); /*play 1.wav then play 2.wav*/

what's wrong with it?

Regards
Mihan

[jsulm]

@Mihan said in why the QSoundEffect will play two sources after I change the source:

QSoundEffect

You're adding second source just after staring playing, right? So, I would say it does exactly what you tell it to do.

[Mihan]

@jsulm
Yes, I alse find it will play with different volume after QSoundEffect::setVolume(),and the voice is very large even I just set it 0.15 ( when the volume is 0.1 ,the voice is so normal, but when it's 0.15 , the voice seems to be the biggest)

is it about platform or Qt version? I'm using Qt 5.6.2 on IMX6DL kernel 4.1.15

[SGaist]

Hi,

As @jsulm wrote, it's doing exactly what you are asking it to do. You load a file, call play, load a different file, call play again. That's exactly what you are hearing.

[Mihan]

@SGaist @jsulm
Yes I know that.
It sounds like as follow:

Maybe the pulseaudio in my device is too old (version 8.0, the maintainer said should update it).

[jsulm]

@Mihan Why don't you wait until first file actually finished playing before starting second one?

[Mihan]

@jsulm
Sure I have waited the first file finished.
Even I use different QSoundEffect to play different file, it still remains a little data in the latest time.

Also if I just change the volume for the same source, it still play audio like above ( the second time will play with different volume at the beginning).