如何在錄製音頻時播放按鈕敲擊聲？

當我開始錄製音頻時，我正在嘗試播放按鈕敲擊聲。是否可以在錄製時播放聲音，直播？如何在錄製音頻時播放按鈕敲擊聲？

要求：

1）如果我有記錄按鈕點擊不想開始記錄按鈕自來水sound.it完成後記錄需要一定的時間延遲。

2）如果我點擊錄製按鈕不想錄制牛肉的聲音錄製的音頻文件。

3）我想播放按鈕輕敲聲音並同時錄製音頻而不重疊。

開始錄音：

-(IBAction)btnRecordTap:(id)sender 
{ 
[self playTapSound:@"press.wav"]; 

// Set the audio file 
NSArray *pathComponents = [NSArray arrayWithObjects: 
          [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject], 
          @"MyAudioMemo.m4a", 
          nil]; 
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents]; 

// Setup audio session 
AVAudioSession *session = [AVAudioSession sharedInstance]; 
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil]; 

// Define the recorder setting 
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init]; 

[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey]; 
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey]; 
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey]; 

// Initiate and prepare the recorder 
recorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSetting error:NULL]; 
recorder.delegate = self; 
recorder.meteringEnabled = YES; 
[recorder prepareToRecord]; 
}

播放系統聲音

//---------------play button sound-------------------- 

-(SystemSoundID) playASound: (NSString *) fileName 
{ 
//Get the filename of the sound file: 
NSString *path = [NSString stringWithFormat:@"%@/%@", 
        [[NSBundle mainBundle] resourcePath], 
        fileName]; 

//Get a URL for the sound file 
NSURL *filePath = [NSURL fileURLWithPath:path isDirectory:NO]; 
AudioServicesCreateSystemSoundID((__bridge CFURLRef)filePath, &soundFileObject); 

//play the file 
AudioServicesPlaySystemSound(soundFileObject); 
return soundFileObject; 
} 

-(void)playTapSound:(NSString *)file 
{ 
SystemSoundID id = [self playASound:file]; 
    AudioServicesAddSystemSoundCompletion (id,NULL,NULL,completionCallback,(__bridge_retained void *)self); 
} 

static void completionCallback (SystemSoundID ssID,void *clientData) 
{ 
    AudioServicesRemoveSystemSoundCompletion (ssID); 
    AudioServicesDisposeSystemSoundID(ssID); 
}

來源

2013-09-27 Ravindhiran

嘗試在後臺線程中發揮的踢踏聲：

[self performSelectorInBackground:@selector(PlayTapSound:) withObject:nil]; 
// Start recording 
    . 
    . 

-(void)PlayTapSound 
{ 
    // play tap sound code. 
}

直接播放聲音再前盤帶。像prepareToRecord之後一樣。

來源

2013-09-27 14:27:30 hasan83

如何在錄製音頻時播放按鈕敲擊聲？

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