Harmonics

Harmonics are multiples of the fundamental frequency of a sound. For example, if the fundamental is 100 Hz, its harmonics will be at 200 Hz, 300 Hz, 400 Hz, and so on. Harmonics shape the timbre of a sound and help us distinguish a voice, piano, or guitar even if they play the same note. In sound design and mixing, manipulating harmonics (through saturation, distortion, or EQ) adds warmth, character, or clarity to an audio signal.