In acoustics, which quantity corresponds to pitch and is measured in cycles per second (Hz)?

In acoustics, which quantity corresponds to pitch and is measured in cycles per second (Hz)?

• A. Amplitude
• B. Noise Dose
• C. Frequency
• D. Time

Answer: (C)

Pitch in acoustics is determined by the frequency of the sound wave—that is, how many cycles occur each second. Frequency is measured in cycles per second, or hertz (Hz). A higher frequency yields a higher perceived pitch, while a lower frequency yields a lower pitch. This is distinct from amplitude, which relates to how loud the sound is, and from time, which is a duration or interval. Noise dose is about exposure to noise over time, not a single tone’s property. For example, 440 Hz is a common reference pitch for the musical note A.

Pitch in acoustics is determined by the frequency of the sound wave—that is, how many cycles occur each second. Frequency is measured in cycles per second, or hertz (Hz). A higher frequency yields a higher perceived pitch, while a lower frequency yields a lower pitch. This is distinct from amplitude, which relates to how loud the sound is, and from time, which is a duration or interval. Noise dose is about exposure to noise over time, not a single tone’s property. For example, 440 Hz is a common reference pitch for the musical note A.