Question

我想开发app以.mp3格式录制音频。它必须录制语音电话，会议等。

我搜索并找到了几个用于android的示例代码，仅用于录制单曲（麦克风）。如何录制来自麦克风和扬声器的声音（如果是语音通话）。我怎样才能在ios和windows中实现这一目标？

以下是我在Android中尝试过的内容。这可以工作并创建.mp3文件，但有任何记录语音通话的帮助吗？

   string path = "/sdcard/test.mp3";
   MediaRecorder _recorder = new MediaRecorder();
   _recorder.SetOutputFormat(OutputFormat.Mpeg4);
   _recorder.SetAudioEncoder(AudioEncoder.Aac);
   _recorder.SetAudioSamplingRate(44100);
   _recorder.SetAudioEncodingBitRate(8000);
   _recorder.SetOutputFile(path);
   _recorder.Prepare();
   _recorder.Start();

iOS代码（创建文件但不播放或无法正确创建文件）：

// Declare string for application temp path and tack on the file extension
string fileName = string.Format("Myfile{0}.aac", DateTime.Now.ToString("yyyyMMddHHmmss"));
string tempRecording = Path.Combine(Path.GetTempPath(), fileName);

Console.WriteLine(tempRecording);
this.audioFilePath = NSUrl.FromFilename(tempRecording);

//set up the NSObject Array of values that will be combined with the keys to make the NSDictionary
NSObject[] values = new NSObject[]
{    
    NSNumber.FromFloat(44100.0f),
    NSNumber.FromInt32((int)AudioToolbox.AudioFormatType.MPEG4AAC),
    NSNumber.FromInt32(1),
    NSNumber.FromInt32((int)AVAudioQuality.High)
};
//Set up the NSObject Array of keys that will be combined with the values to make the NSDictionary
NSObject[] keys = new NSObject[]
{
    AVAudioSettings.AVSampleRateKey,
    AVAudioSettings.AVFormatIDKey,
    AVAudioSettings.AVNumberOfChannelsKey,
    AVAudioSettings.AVEncoderAudioQualityKey
};
//Set Settings with the Values and Keys to create the NSDictionary
settings = NSDictionary.FromObjectsAndKeys(values, keys);

//Set recorder parameters
NSError error;
recorder = AVAudioRecorder.Create(this.audioFilePath, new AudioSettings(settings), out error);

在ios和android上以.mp3格式录制语音电话的任何帮助。或者在iOS中录制简单的.mp3文件以启动。

我还想知道我是否在android和iOS中获得了SamplingRate，BitRate，AudioEncoder的列表？

在Android，ios和Windows应用程序中录制语音呼叫

0 个答案: