What is another word for sound-with-sound?
Pronunciation: [sˈa͡ʊndwɪðsˈa͡ʊnd] (IPA) 
The term "sound-with-sound" can be referred to as resonance or reverberation. It is the effect created when sound waves bounce back and forth between surfaces, producing a richer, fuller sound. These can also be known as echoes, vibrations, or ringings. Depending on the environment or medium, different synonyms may apply. In a concert hall, we often hear reverberation as sound waves bounce off the walls and ceiling. In nature, sound-with-sound can be called rustling, crackling, or buzzing. Synonyms for this phenomenon may vary depending on the type of sound or the context of its occurrence, but they all describe the same physical phenomenon.
