Timbre is ?

Timbre is the quality or character of a sound or voice that distinguishes it from others, even when they are played or sung at the same pitch and volume. It is often described as the "color" or "tone" of a sound and is determined by factors such as the harmonics, overtones, and resonance of the sound source. Timbre is what allows different musical instruments, voices, or sound sources to be recognized and differentiated from each other.