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Showing all 2 field notes

01

Hardware build / Measurement

Calibrated Multichannel & Binaural Audio Recording on iPhone

Measure headphones with a binaural dummy head and an iPhone: SR3D head, class-compliant USB interface, and a loaded 1.00 V / 1 kHz reference to dB SPL.

By Joshua Hrisko · 11 min read

Aug 09, 2026

02

Hardware build / Mic arrays

Acoustic Beamforming on iPhone: UMA-8

Use a miniDSP UMA-8 mic array with an iPhone for direction finding and a steerable beam: 1.2 dB broadband, but at least 15 dB at 4 kHz per octave band.

By Joshua Hrisko · 14 min read

Aug 09, 2026