Ears — Audio Toolkit

– Decodes to B-format via fixed matrix derived from capsule directivity (cardioid/omni).

B_mn(t) = s(t) * Y_mn(θ, φ) where Y_mn are real spherical harmonics (SN3D normalization). ears audio toolkit

gain_i = Σ_mn B_mn * Y_mn(l_i) with optional or basic energy preservation for in-phase rendering. 2.2. Microphone Array Processing Eigenmike (em32) → Ambisonics up to 3rd order: Uses pseudo-inverse of spherical harmonic matrix sampled at capsule positions. – Decodes to B-format via fixed matrix derived

– For loudspeakers at directions l_i : ears audio toolkit

– For a plane wave from direction (θ, φ) with signal s(t) :

– Allows user to define arbitrary sphere/plane arrays and compute encoding matrix. 2.3. Binaural Rendering Core pipeline: Ambisonic signal → SH-domain rotation → SH-to-binaural filter bank → Headphone output.