Which of the following is the correct label for the acoustic parameter known as harmonic power?

• A. Fundamental Frequency
• B. Jitter
• C. Harmonic power
• D. Harmonic to Noise Ratio

Answer: (C)

Harmonic content in a voice signal comes from the fundamental frequency and its integer multiples. The energy contained specifically in those harmonic components is what’s called harmonic power. So the label that directly describes this quantity is the term itself: harmonic power.

The other concepts describe different things: fundamental frequency is about how often the vocal folds vibrate (pitch), jitter is about timing irregularities from cycle to cycle, and harmonic to noise ratio is a ratio comparing harmonic energy to noise energy rather than the harmonic energy alone.