The fundamental frequency is the highest frequency in a complex sound, which determines the perceived timbre of that sound.

Question

Quizplus · Accepted Answer

The fundamental frequency is actually the lowest frequency in a complex sound and contributes to the perceived pitch of the sound, not necessarily its timbre. Timbre is affected by the presence and relative intensities of overtones or harmonics in the sound.

The Fundamental Frequency Is the Highest Frequency in a Complex