A Head-Mounted Microphone Array for Binaural Rendering
Paper in proceeding, 2021

We recently presented a method for obtaining a spherical harmonic representation of a sound field based on microphones along the equator of a rigid spherical object that ideally has a size similar to that of a human head. We refer to this setup as an equatorial microphone array. Even more recently, we presented an extension of this method that allows for employing a scattering object that is approximately spherical such as a human head. The present paper provides an overview as well as a juxtaposition of the two solutions. We present an instrumental evaluation based on the application of binaural rendering of the captured sound fields by analysing simulated binaural transfer functions of both methods for a variety of scenarios.

equatorial microphone array

spherical microphone array

Binaural audio

virtual reality


Jens Ahrens

Chalmers, Architecture and Civil Engineering, Applied Acoustics

Hannes Helmholz

Chalmers, Architecture and Civil Engineering, Applied Acoustics

David Lou Alon

Facebook Reality Labs

Sebastia V. Amengual Gari

Facebook Reality Labs

2021 Immersive and 3D Audio: From Architecture to Automotive, I3DA 2021

978-1-6654-0998-8 (ISBN)

Immersive and 3D Audio: from Architecture to Automotive (I3DA)
Bologna, Italy,

Binaural Rendering of Spherical Microphone Array Data

Oculus Inc., 2018-05-01 -- 2019-04-30.

Areas of Advance

Information and Communication Technology

Subject Categories


Signal Processing



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