AudioRecord 如何保存文件（PCM.WAV）？

Question

static final int frequency = 8000;
static final int channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_MONO;  
static final int audioEncoding = AudioFormat.ENCODING_PCM_16BIT;


recBufSize = AudioRecord.getMinBufferSize(frequency,  
                 channelConfiguration, audioEncoding);  
audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, frequency,  
                 channelConfiguration, audioEncoding, recBufSize);

File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() 
                     +"/reverseme.pcm");

OutputStream os = new FileOutputStream(file);
BufferedOutputStream bos = new BufferedOutputStream(os);
DataOutputStream dos = new DataOutputStream(bos);

short[] buffer = new short[recBufSize];  
audioRecord.startRecording();

             while (isRecording) {  

                 int bufferReadResult = audioRecord.read(buffer, 0,  
                         recBufSize);

                 for(int i = 0; i < bufferReadResult;i++) {
                     dos.writeShort(buffer[i]);
                 }
             }  
             audioRecord.stop();
             dos.flush();
             dos.close();

但是，打开保存文件（reverseme.pcm），无法播放。 帮帮我，谢谢。

Answer 1

你犯了一个大错误：当你设置AudioRecord.getMinBufferSize的参数时，你选择channelConfiguration = AudioFormat.CHANNEL_CONFIGURATION_MONO，但是你可以查找应该设置channelConfig的字典描述音频通道的配置。请参阅CHANNEL_IN_MONO 和CHANNEL_IN_STEREO。