同时录制和播放音频

Question

任何一个帮助我在Iphone中同时录制和播放音频。

Answer 1

您可以从AVFoundation框架中获得使用。它有AVAudioPlayer播放音频文件和AVAudioRecorder进行录制。 您必须记住，录音机只会使用麦克风进行录音。 因此，同时播放音频文件并录制它取决于麦克风如何感知播放的音频。

Answer 2

您可以使用Audio Unit RemoteIO或Audio Queue API在iOS设备（第一代触控除外）上同时播放和录制。这些是较低级别的API，您必须自己处理传出和传入PCM样本的传入缓冲区。

请参阅Apple的aurioTouch示例应用程序以获取示例代码。

Answer 3

请检查是否有录音和播放aurioTouch苹果的示例代码同时

您还可以检查Recording Audio on an iPhone

Answer 4

希望这有助于一些人......我做了记录音频的应用程序，从说像Pandora这样的应用程序，并可以播放音频。运行/播放音频应用程序，运行AudioMic，录制，关闭音频应用程序，返回并播放AudioMic录制的音频。好极了！

https://github.com/casspangell/AudioMic

Answer 5

要录制的游戏在iOS中的音频文件，你可以使用AVFoundation框架。使用下面的swift代码来录制和播放音频。 请记住，录音机将使用麦克风录制音频，因此请在设备上测试此代码。

import UIKit 
import AVFoundation 

extension String { 

     func stringByAppendingPathComponent(path: String) -> String { 

     let nsSt = self as NSString 
     return nsSt.stringByAppendingPathComponent(path) 
    } 
} 

class ViewController: UIViewController, AVAudioPlayerDelegate, AVAudioRecorderDelegate{ 

var audioPlayer : AVAudioPlayer! 
var audioRecorder : AVAudioRecorder! 

@IBOutlet var recordButton : UIButton! 
@IBOutlet var playButton : UIButton! 
@IBOutlet var stopButton : UIButton! 

override func viewDidLoad() { 
    super.viewDidLoad() 

    self.recordButton.enabled = true 
    self.playButton.enabled = false 
    self.stopButton.enabled = false 
} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
} 

//MARK: UIButton action methods 

@IBAction func playButtonClicked(sender : AnyObject){ 

    let dispatchQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) 
    dispatch_async(dispatchQueue, { 

     if let data = NSData(contentsOfFile: self.audioFilePath()) 
     { 
      do{ 
       self.audioPlayer = try AVAudioPlayer(data: data) 
       self.audioPlayer.delegate = self 
       self.audioPlayer.prepareToPlay() 
       self.audioPlayer.play() 
      } 
      catch{ 
       print("\(error)") 
      } 
     } 
    }); 
} 

@IBAction func stopButtonClicked(sender : AnyObject){ 

    if let player = self.audioPlayer{ 
     player.stop() 
    } 

    if let record = self.audioRecorder{ 

     record.stop() 

     let session = AVAudioSession.sharedInstance() 
     do{ 
      try session.setActive(false) 
     } 
     catch{ 
      print("\(error)") 
     } 
    } 
} 

@IBAction func recordButtonClicked(sender : AnyObject){ 

    let session = AVAudioSession.sharedInstance() 

    do{ 
     try session.setCategory(AVAudioSessionCategoryPlayAndRecord) 
     try session.setActive(true) 
     session.requestRecordPermission({ (allowed : Bool) -> Void in 

      if allowed { 
       self.startRecording() 
      } 
      else{ 
       print("We don't have request permission for recording.") 
      } 
     }) 
    } 
    catch{ 
     print("\(error)") 
    } 
} 

func startRecording(){ 

    self.playButton.enabled = false 
    self.recordButton.enabled = false 
    self.stopButton.enabled = true 

    do{ 

     let fileURL = NSURL(string: self.audioFilePath())! 
     self.audioRecorder = try AVAudioRecorder(URL: fileURL, settings: self.audioRecorderSettings() as! [String : AnyObject]) 

     if let recorder = self.audioRecorder{ 
      recorder.delegate = self 

      if recorder.record() && recorder.prepareToRecord(){ 
       print("Audio recording started successfully") 
      } 
     } 
    } 
    catch{ 
     print("\(error)") 
    } 
} 

func audioFilePath() -> String{ 

    let path = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] 
    let filePath = path.stringByAppendingPathComponent("test.caf") as String 

    return filePath 
} 

func audioRecorderSettings() -> NSDictionary{ 

    let settings = [AVFormatIDKey : NSNumber(int: Int32(kAudioFormatMPEG4AAC)), AVSampleRateKey : NSNumber(float: Float(16000.0)), AVNumberOfChannelsKey : NSNumber(int: 1), AVEncoderAudioQualityKey : NSNumber(int: Int32(AVAudioQuality.Medium.rawValue))] 

    return settings 
} 

//MARK: AVAudioPlayerDelegate methods 

func audioPlayerDidFinishPlaying(player: AVAudioPlayer, successfully flag: Bool) { 

    if flag == true{ 
     print("Player stops playing successfully") 
    } 
    else{ 
     print("Player interrupted") 
    } 

    self.recordButton.enabled = true 
    self.playButton.enabled = false 
    self.stopButton.enabled = false 
} 

//MARK: AVAudioRecorderDelegate methods 

func audioRecorderDidFinishRecording(recorder: AVAudioRecorder, successfully flag: Bool) { 

    if flag == true{ 
     print("Recording stops successfully") 
    } 
    else{ 
     print("Stopping recording failed") 
    } 

    self.playButton.enabled = true 
    self.recordButton.enabled = false 
    self.stopButton.enabled = false 
} 
} 

我已经测试过的Xcode 7.0 &这段代码的iOS 9