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This technology uses a layered architecture that couples two complementary mechanisms. Polymer aerogels, with extremely small pores and high surface area, create tortuous pathways that dissipate structure-borne vibration (damping). Open-cell melamine foam captures airborne sound through viscous and elastic losses in the cellular network (absorption). By varying layer order, thickness, and chemistry, the composite becomes a tunable gradient system and can be designed for specific vibro-acoustic signatures, such as targeted frequency bands and mixed noise/vibration environments. Configurations can include melamine foam, compressed melamine, and melamine/aerogel sub-layers to balance absorption and damping in a single, thin envelope. Beyond acoustic performance, the aerogel component contributes low thermal conductivity. This enables insulation that reduces mass and volume while improving thermal management in panels, liners, and enclosure inserts and it integrates readily with existing structures as bonded or mechanically fastened layers. The layers can range from small samples to large panels for system-level installations. The technology has been validated from small test pieces to 8-foot panels where the layered composite can be tuned via stack order, thickness, and compression (melamine, compressed melamine, melamine/aerogel) to target specific frequency bands while retaining low thermal conductivity and low mass. This technology is assessed at TRL 6 and is available for patent licensing.