Project data
Authors González R.
Joshua M. Pearce
Lokki T.
Status Designed
Verified by Aalto University
Links https://www.aes.org/e-lib/browse.cfm?elib=19701%7C
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Device data
Page data
Type Project, Device
Keywords open source hardware, spherical microphone array modular microphone, 3D printing, FOSH, open hardware, osat, physics, MOST completed projects and publications, Sound, science, open source, OSAT 3D-Printable Designs, Open source scientific hardware
SDG Sustainable Development Goals SDG09 Industry innovation and infrastructure
Published 2018
License CC-BY-SA-4.0
Affiliations Aalto University
Impact Number of views to this page. Views by admins and bots are not counted. Multiple views during the same session are counted as one. 481
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Tctscover.png Create-Joshua-Pearce.png Pearce Publications
Energy Conservation Energy Policy Industrial SymbiosisLife Cycle Analysis Materials Science Open SourceMedical Photovoltaic Systems Solar CellsSustainable Development Sustainability Education

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Spherical microphones arrays are commonly utilized for recording, analyzing and reproducing sound-fields. In the context of higher-order Ambisonics, the spatial resolution depends on the number and distribution of sensors over the surface of a sphere. Commercially available arrays have set configurations that cannot be changed, which limits their usability for experimental and educational spatial audio applications. Therefore, an opensource modular design using MEMS microphones and 3D printing is proposed for selectively capturing frequency-dependent spatial components of sound-fields. Following a modular paradigm, the presented device is low cost and decomposes the array into smaller units (a matrix, connectors and microphones), which can be easily rearranged to capture up to third-order spherical harmonic signals with various physical configurations.


  • González, R., Pearce, J. and Lokki, T., 2018, August. Modular Design for Spherical Microphone Arrays. In Audio Engineering Society Conference: 2018 AES International Conference on Audio for Virtual and Augmented Reality. 2018 AES International Conference on Audio for Virtual and Augmented Reality (August 2018). Paper Number: P3-10. http://www.aes.org/e-lib/browse.cfm?elib=19701

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