How to play multiple audio sources simultaneously in Silverlight
- by Shurup
I want to play simultaneous multiply audio sources in Silverlight.
So I've created a prototype in Silverlight 4 that should play a two mp3 files containing the same ticks sound with an intervall 1 second. So these files must be sounded as one sound if they will be played together with any whole second offsets (0 and 1, 0 and 2, 1 and 1 seconds, etc.)
I my prototype I use two MediaElement (me and me2) objects.
DateTime startTime;
private void Play_Clicked(object sender, RoutedEventArgs e) {
me.SetSource(new FileStream(file1), FileMode.Open)));
me2.SetSource(new FileStream(file2), FileMode.Open)));
var timer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(1) };
timer.Tick += RefreshData;
timer.Start();
}
First file should be played at 00:00 sec. and the second in 00:02 second.
void RefreshData(object sender, EventArgs e) {
if(me.CurrentState != MediaElementState.Playing) {
startTime = DateTime.Now;
me.Play();
return;
}
var elapsed = DateTime.Now - startTime;
if(me2.CurrentState != MediaElementState.Playing &&
elapsed >= TimeSpan.FromSeconds(2)) {
me2.Play();
((DispatcherTimer)sender).Stop();
}
}
The tracks played every time different and not simultaneous as they should (as one sound).
Addition:
I've tested a code from the Bobby's answer.
private void Play_Clicked(object sender, RoutedEventArgs e) {
me.SetSource(new FileStream(file1), FileMode.Open)));
me2.SetSource(new FileStream(file2), FileMode.Open)));
// This code plays well enough.
// me.Play();
// me2.Play();
// But adding the 2 second offset using the timer,
// they play no simultaneous.
var timer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(2) };
timer.Tick += (source, arg) => {
me2.Play();
((DispatcherTimer)source).Stop();
};
timer.Start();
}
Is it possible to play them together using only one MediaElement or any implementation of MediaStreamSource that can play multiply sources?
