I realize this is a pretty old post. Were you able to get your own G711 working? My own initial thought would be to use a lib compiled for the kernel and use JNI to call it.
Change your arec. Read(buffer, 0, buffersize) call to use the Bytebuffer read() method from AudioRecord.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.