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Description
A computational pipeline for modal analysis and synthesis of room impulse responses (RIRs) is presented, with application to a reverberation chamber. Modal frequencies and damping coefficients are estimated from measured RIRs using a sub-band least-squares complex frequency-domain (LSCF) algorithm. Synthesis is performed as a direct modal sum in the time domain. The method extends previous single-channel work to a multiple-input multiple-output (MIMO) setting comprising 36 source-receiver pairs. Poles extracted independently for each measurement are consolidated into a common frequency basis via a voting procedure across spatial positions. Residual amplitudes are then obtained for each measurement by banded least-squares fitting. The resulting parametric model yields per-band $T_{60}$ statistics with inter-measurement uncertainty. Reconstructed RIRs are validated against measurements in both frequency and time domains.