title: What is the AudioContext currentTime for the first sample recorded?
body: <p>Using the Web Audio API, I create a bufferSource, and use a new MediaRecorder to record at the same time.  I'm recording the sound coming out of my speakers with the built in microphone.</p>
  
  <p>If I play back the original and the new recording, there is a significant lag between the two.  (It sounds like about 200ms to me.)  If I console.log the value of globalAudioCtx.currentTime at the point of calling the two "start" methods, the two numbers are exactly the same.  The values of Date.now() are also exactly the same.</p>
  
  <p>Where is this latency introduced?  The latency due to speed of sound is about 1000x as small as what I am hearing.</p>
  
  <p>In short, how can I get these two samples to play back at exactly the same time?</p>
  
  <p>I'm working in Chrome on Linux.</p>