Combining different room acoustic modelling methods could provide a better balance between perceptual plausibility and computational efficiency than using a single and potentially more computationally expensive model. In this work, a hybrid acoustic modelling system that integrates ray tracing (RT) with an advanced
feedback delay network (FDN) is designed to generate perceptually plausible RIRs. A multiple stimuli with hidden reference
and anchor (MUSHRA) test and a two-alternative-forced-choice
(2AFC) discrimination task have been conducted to compare the
proposed method against ground truth recordings and conventional
RT-based approaches. The results show that the proposed system
delivers robust performance in various scenarios, achieving highly
plausible reverberation synthesis.