audiorecord

I have been working on an Android project for awhile that displays the fundamental frequency of an input signal (to act as a tuner). I have successfully implemented the AudioRecord class and am getting data from it. However, I am having a hard time performing an FFT on this data to get the fundamental frequency of the input signal. I have been looking at the post here , and am using FFT in Java and Complex class to go with it. I have successfully used the FFT function found in FFT in Java, but I am not sure if I am obtaining the correct results. For the magnitude of the FFT (sqrt[re re+im im])

I am trying to make a simple Android application that streams live microphone audio to a server for playback. The resulting playback sounds strange, with large gaps in the audio. Does anyone know what I am doing wrong? EDIT: Solved. Turns out I was assuming that each incoming buffer would be completely full, a faulty assumption on my part. Here is my activity: public class MainActivity extends Activity { private static String TAG = "AudioClient"; // the server information private static final String SERVER = "xx.xx.xx.xx"; private static final int PORT = 50005; // the audio recording options

I am trying to encode aac audio using android AudioRecord and MediaCodec. I have created a encoder class very similar to ( Encoding H.264 from camera with Android MediaCodec ). With this class, I created an instance of AudioRecord and tell it to read off its byte[] data to the AudioEncoder (audioEncoder.offerEncoder(Data)). while(isRecording) { audioRecord.read(Data, 0, Data.length); audioEncoder.offerEncoder(Data); } Here is my Setting for my AudioRecord int audioSource = MediaRecorder.AudioSource.MIC; int sampleRateInHz = 44100; int channelConfig = AudioFormat.CHANNEL_IN_MONO; int

I have read a lot of pages about Android's AudioRecorder. You can see a list of them below the question. I'm trying to record audio with AudioRecorder, but it's not working well. public class MainActivity extends Activity { AudioRecord ar = null; int buffsize = 0; int blockSize = 256; boolean isRecording = false; private Thread recordingThread = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public void baslat(View v) { // when click to START buffsize = AudioRecord.getMinBufferSize(44100,

I'm working on a voice recording app. In it, I have a Seekbar to change the input voice gain. I couldn't find any way to adjust the input voice gain. I am using the AudioRecord class to record voice. recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, RECORDER_SAMPLERATE, RECORDER_CHANNELS, RECORDER_AUDIO_ENCODING, bufferSize); recorder.startRecording(); I've seen an app in the Google Play Store using this functionality. As I understand you don't want any automatic adjustments, only manual from the UI. There is no built-in functionality for this in Android, instead you have to modify