Not sure if it is a Nexus 5 specific issue but usually the class used to record calls is MediaRecorder. Have you tried to replace AudioRecorder by a MediaRecorder? Based on this stack-overflow question, I think you could try the following code based on Ben blog post: import android.media.MediaRecorder; import android.os.Environment; import java.io.File; import java.io.IOException; … Read more
I’m looking for the same, I got one awesome explination about Transfering data using audio signal in android by Sudar , go through once that may be helpful to you.
The original poster has probably long since moved on, but I’ll post this in case anyone else finds this question. Unfortunately, in my experience, each device can support different sample rates. The only sure way of knowing what sample rates a device supports is to test them individually by checking the result of AudioRecord.getMinBufferSize() is … Read more
Here I am posting you the some code example which record good quality of sound using AudioRecord API. Note: If you use in emulator the sound quality will not much good because we are using sample rate 8k which only supports in emulator. In device use sample rate to 44.1k for better quality. public class … Read more
The trick with using AudioRecord is that each device may have different initialization settings, so you will have to create a method that loops over all possible combinations of bit rates, encoding, etc. private static int[] mSampleRates = new int[] { 8000, 11025, 22050, 44100 }; public AudioRecord findAudioRecord() { for (int rate : mSampleRates) … Read more