Research on SONAH calculation accuracy optimization based on sparse matrix

doi:10.1016/j.apacoust.2025.110948

Research on SONAH calculation accuracy optimization based on sparse matrix

2025-07-16

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DOI：10.1016/j.apacoust.2025.110948

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• A sparse matrix-based SONAH method is proposed to improve low-frequency reconstruction accuracy. • The approach exploits sparsity in propagation and reconstruction matrices to reduce numerical instability. • Numerical simulations show a 3.3 dB average error reduction in the 100–500 Hz range. • Anechoic chamber experiments confirm a 7.3 dB improvement over conventional SONAH. • The proposed method reduces CPU usage by two-thirds, enhancing computational efficiency.

Research on SONAH calculation accuracy optimization based on sparse matrix

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