iOS CocosDenshion音频播放参差不齐（延迟）

Question

我试图为需要快速连续播放样本的应用程序获得流畅的音频播放。我希望Cocos2d和CocosDenshion能够做到这一点，因为AVAudioPlayer由于滞后问题而无法工作，但我仍然遇到问题 - 这里模拟的“第16个音符”最终听起来会摇摆不定。

我将不得不去与RemoteIO或类似的东西？在iOS中播放声音的精确时机最简单的方法是什么？

或者，正在使用CDAudioEngine playSound：函数不是我可以用CocosDenshion做的最有效的方法吗？

要加载引擎：

[CDAudioManager sharedManager]; 

while ([CDAudioManager sharedManagerState] != kAMStateInitialised) { 
    [NSThread sleepForTimeInterval:0.1]; 
    NSLog(@"Not init yet..."); 
} 



CDSoundEngine *sse = [CDAudioManager sharedManager].soundEngine; 

NSArray *defs = [NSArray arrayWithObjects: 
       [NSNumber numberWithInt:16],nil]; 
[sse defineSourceGroups:defs]; 
[[CDAudioManager sharedManager].soundEngine setSourceGroupNonInterruptible:0 isNonInterruptible:TRUE]; 

NSLog(@"Loading sound: %i",[sse loadBuffer:1 filePath:@"bass drum.wav"]); 

[[CDAudioManager sharedManager] setResignBehavior:kAMRBStopPlay autoHandle:YES]; 
[[CDAudioManager sharedManager] setMode:(kAMM_MediaPlayback)]; 

线程代码以测试播放（基本上节拍器示例应用程序，editted使用CocosDenshion播放）：

NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; 

// Give the sound thread high priority to keep the timing steady. 
[NSThread setThreadPriority:1.0]; 
BOOL continuePlaying = YES; 

CDSoundEngine *sse = [CDAudioManager sharedManager].soundEngine; 

while (continuePlaying) { // Loop until cancelled. 

    // An autorelease pool to prevent the build-up of temporary objects. 
    NSAutoreleasePool *loopPool = [[NSAutoreleasePool alloc] init]; 


    [sse playSound:1 sourceGroupId:0 pitch:1.0f pan:0.0f gain:1.0f loop:NO]; 
    withObject:nil waitUntilDone:NO]; 
    NSDate *curtainTime = [[NSDate alloc] initWithTimeIntervalSinceNow:0.125f]; 
    NSDate *currentTime = [[NSDate alloc] init]; 

    // Wake up periodically to see if we've been cancelled. 
    while (continuePlaying && ([currentTime compare:curtainTime] != NSOrderedDescending)) { 
     if ([soundPlayerThread isCancelled] == YES) { 
      continuePlaying = NO; 
     } 
     [NSThread sleepForTimeInterval:0.005]; 
     [currentTime release]; 
     currentTime = [[NSDate alloc] init]; 
    } 
    [curtainTime release];  
    [currentTime release];  
    [loopPool drain]; 
} 
[pool drain]; 

Answer 1

RemoteI0

此有一些信息为什么 http://atastypixel.com/blog/developing-loopy-part-2-implementation/