Three dimensional spatial sound reproduction using irregular loud speaker layouts requires a special decoder design. We present the fundamentals of Higher Order Ambisonics (HOA) decoding. Then we focus on beam forming techniques to derive solutions for irregular spaced setups. Panning functions are created by Vector Based Amplitude Panning or Least-Squares methods as patterns and are modeled by Spherical Harmonics. The required HOA order for effective beam forming proves to be in inverse proportion to the minimal angular spacing of speakers. We demonstrate decoder design using an example setup of 16 speakers, and evaluate objective performance criteria. We conclude that decoders for irregular setups require higher HOA orders compared to decoders for regular setups using the same number of speakers and discuss the consequences.
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can
subscribe to this RSS feed.
Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.
