Final answer:
Timbre is the quality of a sound that is affected by the complex interplay of frequency, amplitude, and timing of sound waves. It is what distinguishes one sound from another, even when they have the same pitch and loudness.
Step-by-step explanation:
Timbre is the quality of a sound that is affected by the complex interplay of frequency, amplitude, and timing of sound waves. It is what distinguishes one sound from another, even when they have the same pitch and loudness. For example, when a violin plays middle C, it sounds different from a piano playing the same note because each instrument produces a distinctive set of frequencies and intensities, giving them a unique timbre.