Which statement about harmonics is true regarding fundamental frequency?

The statement that higher fundamental frequency (Fo) produces more harmonics is correct because the relationship between fundamental frequency and harmonics is directly tied to the nature of sound waves. Harmonics are integer multiples of the fundamental frequency, meaning that for a given fundamental frequency, there are a specific number of harmonics determined by the frequency of the sound source. When the fundamental frequency is higher, the intervals between the harmonics are also increased, hence producing more discernible harmonic content in the sound.

In practice, when a sound source generates a higher Fo, its harmonic series extends upwards in frequency and can be perceived as producing more complex tones. This is particularly important in musical instruments and in speech, where the richness of sound, often associated with higher frequencies, enhances auditory experiences.

Other options do not accurately capture this fundamental relationship. A lower Fo would correspond to a lower harmonic series, which does not translate to more harmonics. Additionally, stating that Fo does not affect the number of harmonics ignores the basic definition of harmonics in relation to Fo, while suggesting that Fo only affects harmonics at low frequencies misrepresents the significance of frequency in harmonic generation across the audible spectrum.