When to go with AVAudioPlayer on iPhone SDK

March 28, 2009 § Leave a comment

How do we make decision on which Audio framework to use? Beside the obvious reasons such as AVAudioPlayer support OS 2.2 and above, AVAudioPlayer won’t have 30 sec limitation, there is another undocumented audio benefit. AVAudioPlayer play significant louder, almost twice as loud than the same audio file played by AudioServicesPlaySystemSound.

If you desire dynamic sounds varying from low to high, AVAudioPlayer is definitely the best choice in audio selection.

// Using AVAudioPlayer
AVAudioPlayer *player;
NSString *soundPath = [[NSBundle mainBundle] pathForResource:@”sound” ofType:@”wav”];
player =[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath: soundPath] error:nil];
player.volume = 1.0;
player.numberOfLoops = 0;
[player prepareToPlay];
[player play];

// Using AudioServicesPlaySystemSound
NSString *soundPath = [[NSBundle mainBundle] pathForResource:@”sound” ofType:@”wav”];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:soundPath], &soundID);
AudioServicesPlaySystemSound (soundID);
[soundPath release];


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