description: 三角铁 is a multifaceted entity that plays a significant role in the design of a sound installation, where it is used to amplify sound. It is not only described as a color but is also intended to be transformed into a phoenix, symbolizing rebirth and transformation. In its essence, 三角铁 serves as a unit of work, symbolizing structure within the context of its application. Functionally, it acts as a physical medium for sound propagation and resonance, embodying the shape of a horn. This characteristic makes it integral to the design and display of sound, highlighting its importance in both the physical and conceptual aspects of sound exhibition. Through its various descriptions, 三角铁 emerges as a symbolic and functional component within sound design, embodying themes of amplification, transformation, and structural integrity.