在Android设备上采集未经处理/原始的麦克风数据

<uses-permission android:name="android.permission.RECORD_AUDIO" />

int sampleRate = 44100; // 采样率
int channelConfig = AudioFormat.CHANNEL_IN_MONO; // 单声道
int audioFormat = AudioFormat.ENCODING_PCM_16BIT; // 16位PCM编码
int bufferSize = AudioRecord.getMinBufferSize(sampleRate, channelConfig, audioFormat);
AudioRecord audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRate, channelConfig, audioFormat, bufferSize);

byte[] buffer = new byte[bufferSize];

audioRecord.startRecording();
audioRecord.read(buffer, 0, bufferSize);