audiorecord

I'm recording sound with AudioRecord in PCM16LE format, 8000Hz, 1channel. It records ok in Android versions 2.3.3-4.4.4, but records strange intermittent sound in Android L(5.0) Developer Preview (on nexus 5, nexus 7 and emulator). Here is the sample of recorded sound (the first half - recording, the second half - playback): https://www.dropbox.com/s/3wcgufua5pphwtt/android_l_sound_record_error.m4a?dl=0 I tried to play recorded sound using different sample rate (4000, 16000) and as 8bit but sound keeps to be intermittent. What the problem could be with this sound? I'm using this

public class AudioRecorderActivity extends Activity { private static final int RECORDER_SAMPLERATE = 8000; private static final int RECORDER_CHANNELS = AudioFormat.CHANNEL_IN_MONO; private static final int RECORDER_AUDIO_ENCODING = AudioFormat.ENCODING_PCM_16BIT; private AudioRecord recorder = null; private static final String TAG = "AudioRecorderActivity"; short[][] buffers = new short[256][160]; int ix = 0; private boolean stopped = false; private void startRecording() { android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO); try { int N = AudioRecord

I am using AudioRecord to record raw audio for processing. The audio records entirely without any noise but when the raw PCM data generated is played back, it plays as if it has been speeded up a lot (upto about twice as much). I am viewing and playing the PCM data in Audacity. I am using actual phone (Samsung Galaxy S5670) for testing. The recording is done at 44100 Hz, 16 bit. Any idea what might cause this? Following is the recording code: public class TestApp extends Activity { File file; OutputStream os; BufferedOutputStream bos; AudioRecord recorder; int iAudioBufferSize; boolean

I've been having an issue with using AudioRecord for Android. I've read as much as I can find online about it, but I cannot seem to get a good initialization. I have tried the Android 2.2 emulator, 1.5 emulator and my phone, an HTC Incredible running Froyo. The emulators and my phone fail initialization. I've tried sampling rates of 8000, 11025, and 44100, formats of CHANNEL_IN_MONO/STEREO and CHANNEL_CONFIGURATION_MONO/STEREO, 8bit and 16bit encoding (8 bit makes the getMinBufferSize fail), and AudioSource of MIC and DEFAULT. All result in the variable test becoming 0 after running a get

I'm using code from the following URL in order to get sound data from the microphone with AudioRecord: http://www.dreamincode.net/forums/topic/303235-visualizing-sound-from-the-microphone/ The problem I'm seeing is that if another app is also using the microphone, I'm getting an error (status -3) from AudioRecord. Everything works as expected if I kill the other app which is using the microphone. Is there an elegant solution to allow my app to access the microphone even if another app is already using it? Thank you. Sadly, only one app at a time can access the microphone (just like the camera)

I'm trying to develop an aplication like iRig for android, so the first step is to capture the mic input and play it at the same time. I have it, but the problem is that i get some latency that makes this unusable, and if I start processing the buffer i'm afraid it will get totally unusable. I use audiorecord and audiotrack like this: new Thread(new Runnable() { public void run() { while(mRunning){ mRecorder.read(mBuffer, 0, mBufferSize); //Todo: Apply filters here into the buffer and then play it modified mPlayer.write(mBuffer, 0, mBufferSize); //Log.v("MY AMP","ARA"); } And the

I am trying to record a audio & stores into a sdcard as well as send to server. When I am trying to play recorded voice its playing,but not as I have recorded. If I record voice for 10mins it ll play for 4min i.e someone has pressed fast forward button with some noisy sound. I am not getting where I am going wrong. Can anybody say me how to solve this problem (should play how much i have recorded i.e 10min recorded then should play only 10mins). Here is the code.. sorry for posting bulk code.. public class Audio_Call extends Activity { private static final int RECORDER_BPP = 16; private static