iPhone alarm problem?

Why do I use UIlocalNotification alarm is no voice?
Paste code:

 
- (Void) viewDidLoad 
{
[Super viewDidLoad]; 

/ / Send notification 
UILocalNotification * notification = [[UILocalNotification alloc] init]; 
if (notification! = nil) {
NSDate * now = [NSDate new]; 
notification.fireDate = [now dateByAddingTimeInterval: 10] notice 
 ;/ / 10 secondsnotification.repeatInterval = kCFCalendarUnitWeekday ;/ / cycle times, once a week 
 kCFCalendarUnitWeekdaynotification.timeZone = [NSTimeZone defaultTimeZone]; 
notification.applicationIconBadgeNumber = 1; / / use red numbers 
notification.soundName = UILocalNotificationDefaultSoundName ;/ / sound, can be replaced alarm.soundName = @ "myMusic.caf" 
/ / Remove the following two lines will not pop-up boxes 
notification.alertBody = @ "notification content" ;/ / message pop-up boxes 
notification.alertAction = @ "Open"; / / balloon button 
/ / Notification.hasAction = NO; / / whether to display additional buttons disappear when no alertAction 

/ / NSDictionary * infoDict = [NSDictionary dictionaryWithObject: @ "someValue" forKey: @ "someKey"]; 
/ / Notification.userInfo = infoDict; / / add additional information 

[[UIApplication sharedApplication] scheduleLocalNotification: notification]; 
} 
[Notification release]; 
} 

Is a new project, in viewDidLoad add this to write code, but there are tips, no sound, this is why?
Reply:
Do not see the problem with a code if you debug on a real machine? Check the environment.
Reply:
Learn, support! !
Reply:
Le test, the same can not, how I am so hard to force it
Reply:
Simulator no sound, there is a real machine sounds.

There is no sound, you can check the option settings in the notification, it can turn off the notification sound.
Reply:
There is a problem is that you open the voice?
Reply:
. . . This is not a problem