The term "attribute of sound" can refer to various characteristics that make up the way we perceive and experience sound. Some synonyms for this phrase might include "auditory quality," "tonal aspect," or "acoustic property." These words all describe different aspects of sound that can be analyzed and understood by musicians, acousticians, and other experts in the field. Other synonyms might include terms related to the emotional or aesthetic qualities of sound, such as "mood," "feeling," or "vibe." Ultimately, there are countless ways to describe and categorize the different attributes of sound, each of which adds to our understanding of this complex and fascinating phenomena.