The article explores the development and evaluation of mycelium-based composites (MBCs) with acoustic absorption properties, using coffee grounds and agricultural waste as raw materials. MBCs are made by combining fungal mycelium with organic substrates, where the mycelium acts as a natural adhesive. The study aims to address the global challenge of waste management and promote a circular economy by creating sustainable sound-absorbing materials. The research focuses on the impact of different factors, such as the type of mycelium, material thickness, the presence of lichens, and the contact surface, on the sound absorption performance of the composites. The results show that the sample SC30-G. *lucidum* exhibits exceptional sound absorption properties at low frequencies, making it a promising material for various applications. The study highlights the potential of MBCs in reducing noise pollution and waste generation, contributing to a more sustainable future.The article explores the development and evaluation of mycelium-based composites (MBCs) with acoustic absorption properties, using coffee grounds and agricultural waste as raw materials. MBCs are made by combining fungal mycelium with organic substrates, where the mycelium acts as a natural adhesive. The study aims to address the global challenge of waste management and promote a circular economy by creating sustainable sound-absorbing materials. The research focuses on the impact of different factors, such as the type of mycelium, material thickness, the presence of lichens, and the contact surface, on the sound absorption performance of the composites. The results show that the sample SC30-G. *lucidum* exhibits exceptional sound absorption properties at low frequencies, making it a promising material for various applications. The study highlights the potential of MBCs in reducing noise pollution and waste generation, contributing to a more sustainable future.