What is Pitch?
Pitch is what we hear when we say a voice sounds high or low. It relates to the frequency of sound waves, but what we really notice is the character it gives a voice. When someone’s voice is deep and booming or high and squeaky, we are describing its pitch.
How is Pitch Measured?
Pitch is measured by its fundamental frequency in Hertz, which is abbreviated as Hz. A lower Hz value corresponds to a lower-pitched voice, while a higher value indicates a higher-pitched voice.
The Importance of a Standardized Sample
To provide a truly objective comparison, every voice is analyzed under the same conditions. That's why on the VoiceRankings platform, every TTS voice reads the identical script. This process eliminates variables like word choice and sentence structure, allowing our analysis to focus purely on the vocal qualities.
The universal sample text we use is:
Hi there, welcome to your personal voice assistant. I'm here to help you explore all your favorite tools in a faster, smarter way. Whether you're sending a message, finding an answer, or just getting things done, I'll be your guide. Let's get started with something simple, ask me anything, and I'll do my best to respond in a natural and friendly voice.
By analyzing every recording of this specific text, we can calculate a reliable average fundamental frequency, giving you a clear and consistent measurement of each voice's pitch.
Common Pitch Ranges for the Human Voice
While every individual is unique, human voices generally fall within predictable frequency ranges. The table below outlines the typical fundamental frequency ranges for different voice types. This can help you understand where a specific voice fits on the spectrum.
| Voice Type | Typical Frequency Range (Hz) | Common Perception |
|---|---|---|
| Bass | 80 - 160 Hz | Deep, low, resonant |
| Baritone | 100 - 200 Hz | Medium-low, common male range |
| Tenor | 130 - 260 Hz | High male range, bright |
| Contralto | 170 - 350 Hz | Low female range, deep |
| Mezzo-Soprano | 200 - 400 Hz | Medium female range |
| Soprano | 260 - 1050 Hz | High female range, bright, airy |
Why Does Pitch Matter?
Understanding pitch is crucial for casting and voice work. A brand looking for a voice of authority for a movie trailer might seek a lower-pitched Baritone or Bass voice. In contrast, a company creating a friendly, energetic animation might prefer a higher-pitched Tenor or Soprano voice.
By providing an objective Pitch (Hz) measurement, VoiceRankings helps you move beyond subjective descriptions and find the precise vocal quality you need that will resonate with your audience.