arXiv:2610.22936v1 Announce Type: new Abstract: Existing acoustic simulation tools either generate room impulse responses (RIRs) efficiently in parameterized rooms or rely on preconstructed three-dimensional scenes, making it difficult to build large numbers of editable residential multi-room environments. We present AcousticAgent, a floorplan-centric acoustic simulation platform that converts structured floorplans into editable, acoustically connected multi-room scenes. AcousticAgent jointly models room geometry and connectivity, furniture, materials, sound sources, and microphone configurations. A scene-oriented Acoustic Materials Database maps semantic elements to acoustic parameters, while a floorplan-aware hybrid geometrical-acoustics solver generates multichannel RIRs and reverberant audio. The platform also supports directional and moving sources, distributed microphones, and VLM-assisted scene construction from floorplan images and text. Using AcousticAgent, we construct FP-RIR, a dataset covering 15,376 residential floorplans with diverse room topologies, propagation conditions, and source--receiver configurations. We validate its acoustic fidelity against real-world measurements and evaluate whole-home source localization, speech enhancement, and far-field speech processing under single-device and distributed microphone settings. The results demonstrate the effectiveness of floorplan-aware modeling for large-scale residential acoustic simulation and the benefits of distributed spatial processing in multi-room environments. AcousticAgent and FP-RIR provide scalable and configurable resources for developing and evaluating residential speech systems.