Motion-Tracked Binaural (MTB): A new audio experience that “puts you there”

You put on your headphones and you’re suddenly immersed in the interactive and amazingly lifelike experience of ‘audio telepresence.’ Motion-Tracked Binaural (MTB) — Dysonics’ patented method for capturing, recording, and reproducing spatial sound — immerses listeners in an invisible reality.

Let’s start from the beginning. What are ‘binaural’ recordings?

Binaural recordings, done by placing microphones in the ears of a specially designed dummy head, capture all the real sounds around the dummy head and reproduce them for headphone listening.

However, traditional binaural recordings lack the natural changes that occur when listeners turn their heads because the dummy head does not capture these changes. The result is the common perception that sounds are inside the head (denoted “lack of externalization”), or consistently behind the head (front/back confusion).

So how does MTB work, and how does it resolve these issues?

  • Step 1: We use our custom 360° microphone array (aka RondoMic) to capture multiple binaural recordings simultaneously.
  • Step 2: Using Dysonics patented technology, we’re able to take the sound field data captured from the RondoMic and stitch those multiple recordings together in real-time.
  • Step 3: We track the orientation of the listener’s head by using RondoMotion, the world’s first wireless motion-sensor for headphones. We then use that orientation data to determine the location of the listener’s head and ears, and to update the binaural audio that’s sent to their headphones.

By taking head motion into account, MTB greatly reduces or even eliminates the issues and general limitations of traditional binaural recordings. And it gives listeners the ability to turn to face each source of sound, leading to the compelling sense of “being there.”

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