Free Voice Gender Analyzer

A voice gender analyzer examines acoustic characteristics that can influence how a recording may be perceived. This free online tool uses your device's microphone to analyse fundamental frequency, pitch movement, recording quality, and a local spectral-balance proxy directly in the browser.

The result is designed to be explainable: it shows a gender-presentation reference, a score, a confidence level, and the measured cues behind them. It does not determine gender identity, biological sex, or personal identity, and it does not treat one recording as a complete description of a person's voice.

The tool runs entirely in your browser. Your audio is never uploaded to a server. There is no signup required, and you can repeat the test whenever you want.

It can be useful when you are exploring voice training, practising spoken delivery, or comparing a repeated reading over time. The result is an acoustic snapshot, not medical, therapeutic, or identity advice. A voice coach or speech professional can provide personalised guidance when you need it.

For the most comparable sessions, use the same passage, room, microphone position, and speaking style each time. That consistency helps make changes in the median and pitch range easier to interpret than a single isolated number.

Pitch is one of the most noticeable acoustic features of the human voice. Typical speaking pitch ranges vary widely: most adult voices fall somewhere between 85 Hz and 255 Hz, with significant overlap between groups.

Pitch is only one dimension of voice perception. Intonation patterns, spectral balance, resonance, speech rate, language, and listener expectations all shape what someone hears. This analyzer measures pitch movement and a browser-calculated spectral-balance proxy alongside pitch; it does not claim direct formant or clinical resonance measurement.

Pitch naturally varies from person to person and within the same person’s speech. Age, health, emotion, language, emphasis, and the sounds in a sentence can all change a speaking sample. That is why the tool shows both a median and an 80% range instead of treating one moment of speech as the whole voice.

Volume is different from pitch: volume is how loud a sound is, while pitch is how high or low it is. Speaking louder does not automatically raise pitch, but a very quiet or noisy recording can make the underlying pitch harder to measure. A calm, natural recording in a quiet room gives the clearest result.

For people engaged in voice training, tracking pitch over time can be a useful way to monitor practice. The future Pro version is planned to include private history and trend views for that use case.

Resonance, formants, and spectral balance

Pitch is related to the rate of vocal-fold vibration, while resonance describes how the vocal tract shapes the sound after it is produced. One technical way to study resonance is through formants: frequency regions where the vocal tract reinforces energy. Formants can shift with tongue position, jaw opening, lip shape, and the vowels in a sentence. They are not the same thing as fundamental frequency, and they cannot be inferred reliably from one pitch number.

A recording also contains a distribution of energy across frequencies. A brighter or darker spectral balance can influence how a listener describes a voice, but the measured balance depends on the microphone, room, distance, compression, and speech sounds. In this tool, spectral balance is intentionally labelled as a local brightness proxy rather than a direct anatomical resonance measurement. Treat it as a clue about this recording, not proof of a physical trait.

When you compare sessions, keep the microphone and passage consistent before interpreting a change in the proxy. If the same voice is recorded on a phone beside a laptop fan and then in a quiet room, the spectrum may change even when the speaker does not. Looking at pitch, range, confidence, and recording conditions together gives a more honest picture than searching for one “correct” frequency.