What gives musical instruments their sound?

This article focuses on the phenomenon of timbre, the characteristic sound that allows listeners to distinguish musical instruments even when they produce sounds of the same frequency and amplitude. It challenges the common explanation that timbre is solely determined by differences in the overtone spectrum, presenting evidence that the transient phases of sound—specifically the attack and decay processes—play a crucial role in instrument recognition. Experiments demonstrate that removing or reversing these transient components significantly impairs the ability to identify instruments, highlighting their importance alongside steady-state overtone spectra. The article suggests incorporating these insights and simple sound-editing experiments into physics education to better illustrate the complexity of timbre.