👉 Reverberating is a term used in music theory to describe the quality of sound that is produced when it resonates with a medium, typically air. In other words, when something resonates, it produces a high-pitched frequency that is perceived as having more resonance than normal. Reverberating sounds are often associated with instruments such as guitars or pianos, where the sound is created by hitting metal or wood against an acoustic instrument's body, which then vibrates back and forth.