title: It is possible to stream voice from phone mic to Bluetooth speaker using HFP or HSP (api level 19-22)?
body: <p>I have some apps to play music, or audio file to bluetooth speaker or headset successfully, all the proccess made with AudioTrack loading media, but now it is necessary to me, to capture the input from the phone mic and stream it to a bluetooth speaker or headset.</p>
  
  <pre><code>AudioRecord(MediaRecorder.AudioSource.MIC,
                      RECORDER_SAMPLERATE, RECORDER_CHANNEL,
                      RECORDER_AUDIO_ENCODING, minsize);
  </code></pre>
  
  <p>Now, my question is, it is possible to achieve this with android sdk level from 19 and above using hsp, hfp or a2dp?</p>