The research responds to the pressing need to substitute conventional synthetic sound absorption materials due to their health risks and environmental impacts. In context, urban noise pollution is status as the second largest environmental health concern, affecting over 125 million individuals living in Europe, particularly with noise levels above 55dB Lden [1], likely affecting residents’ health adversely, though other populations are not exempt. This paper presents a case study focusing on a bio-composite derived from cork and paper waste, aimed at mitigating noise pollution and enhancing acoustics in the historical city centre of Rome. Recent investigations have explored starch-based biomaterials as promising alternatives, incorporating waste cork granules and recycled paper to achieve effective noise absorption while minimizing costs. Building upon prior research on cork's architectural applications, this study evaluates the acoustic performance and fabrication potential of plant-based biomaterials. The findings highlight the feasibility of utilizing waste cork and paper as environmentally friendly alternatives, paving the way for future implementation of sustainable materials in outdoor architectural elements and promoting circular biomateriality.