Objective c 目标C：记录循环

我想知道我的错误或者我是否在代码中忘记了什么

-(IBAction)playRecord
{
    NSLog(@"stop rec");
    [recorder stop];
    [self playSound];


}
-(void)playSound{
    NSLog(@"play");
    recorderFilePath = [NSString stringWithFormat:@"%@/MySound.caf", DOCUMENTS_FOLDER];
    NSURL *urlRecord = [NSURL fileURLWithPath:recorderFilePath isDirectory:NO];
    NSError *errorRecord;
    soundRecord = [[AVAudioPlayer alloc] initWithContentsOfURL:urlRecord error:&errorRecord];
    [soundRecord prepareToPlay];
    [soundRecord play];
    soundRecord.delegate = self;
    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(stopPlayRec) userInfo:nil repeats:YES];
}

-(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
    [recorder prepareToRecord];
    [recorder record];
    NSLog(@"Finish");
}

-(void)stopPlayRec
{
    if ([recorder peakPowerForChannel:(0)] <= (-30) && [recorder peakPowerForChannel:(0)] >= (-43))//detecting voice then record
    {
            NSLog(@"test");
            [self playRecord];

    }
    else 
        {
            if ([recorder peakPowerForChannel:(0)] >= (-160))
            {
                NSLog(@"playing");

            }
        }
}

---

因此，在我的视图加载时，它开始录制..然后在我按下播放按钮后，它将播放我录制的文件..在我按下播放按钮后，我的代码流现在将循环回录制，如果它的峰值功率或频道为-30到-43（检测到语音）然后，如果它的峰值功率通道是-160或更低，它将播放录制的文件。。。现在，我的问题是，当我录制超过5次时，我的声音现在无法听到我录制的文件，我不知道是什么问题。。请帮忙。。我完全不知道……

急需帮助。。请。。需要答案请。。。图特

[self startRecording];