## 1 Introduction
Advancements in acoustic panel design have been achieved through both experimental and numerical approaches, with wood composites playing a central role. Corrugated-core sandwich panels, optimized using numerical modeling and genetic algorithms, have demonstrated significant improvements in sound transmission loss when incorporating wood-based materials [9]. Lightweight wood composite sandwich panels offer structural and acoustic benefits, though they may require additional insulation to meet stringent performance standards [10]. Tunable acoustic materials with inline cavity structures, often utilizing wood composites, provide customizable solutions for sound absorption and transmission properties [11]. Parallel-arranged perforated wood composite panels have proven effective in enhancing low-frequency sound absorption, achieving high performance within reduced thicknesses [12; 13]. Lightweight membrane-type acoustic metamaterials incorporating wood composites have also shown promise for broadband sound insulation, offering high transmission loss with minimal weight compared to traditional materials [14]. The strategic placement of wood composite-based sound-absorbing materials within a room is critical for maximizing acoustic performance [5]. Passive constrained layer damping (PCLD) applied to grid-stiffened wood composite panels has been effective in reducing sound radiation [15]. Preconstructed wall modules utilizing wood composites show promise for indoor acoustic comfort, though careful consideration is required for low-frequency performance [16]. The demand for eco-friendly alternatives to conventional acoustic materials has driven research into wood composites and other bio-based solutions. Agricultural byproducts, such as hemp, wheat straw, and rice husk, have been combined with wood composites to create sustainable building materials, including insulation and bio-bricks [17]. Wood composites derived from industrial waste streams have also been explored as carbon-neutral and cost-effective options for noise reduction, with software simulations comparing their performance to synthetic alternatives [18]. Natural fibers, such as kenaf, coconut fiber, and jute, have been extensively studied for their sound absorption capabilities when integrated into wood composites, with performance optimized through adjustments in density and thickness [19]. These renewable and biodegradable materials offer a sustainable alternative to synthetic options, further enhancing the appeal of wood composites in acoustic applications [20]. Advancements in material science have led to the development of fibrous and porous wood composite materials, with their sound absorption properties influenced by material structure and arrangement [21]. Acoustic metamaterials, particularly plate-type designs incorporating wood composites, have demonstrated high sound transmission loss with minimal thickness, highlighting the importance of understanding their underlying physical mechanisms [22]. The integration of metamaterials with wood composite structures has further enhanced sound insulation in thin-walled applications [23]. Foamed concrete with wood composites has been recognized for its lightweight nature, strength, and thermal insulation properties, making it suitable for structural applications [24]. Mycelium-based bio-composites, derived from waste paper substrates and combined with wood fibers, represent an innovative approach to sustainable sound absorption, though data limitations due to industrial secrecy remain a challenge [25]. Wood composite panels in flooring systems have been optimized for airborne and impact sound insulation, showcasing their versatility [26]. Micro-perforated wood composite panels (MPPs) and advanced foams have been widely studied for their acoustic applications, with modifications integrating artistic design elements to enhance performance [27; 28].