Blog 6: From algorythm to personality compass
Personality in vibrations
From algorithm to personality compassWhat if your voice says more about you than your CV ever could? Your voice reveals far more than just the words you speak or the intonation you use. Do you ever think you can interpret someone’s voice? A deep voice often gives the impression that a person’s personality is more dominant. A soft voice seems to suggest more introversion. The relationship between voice timbre and personality has indeed been demonstrated in scientific literature.
Although many people intuitively think they can “read” a voice themselves, it is actually the less audible, more subtle characteristics that are most revealing. They say something about how someone communicates or functions, and they are measurable with technology. Thanks to a computational technique known as the Fast Fourier Transform (FFT), voice sound can be broken down into its building blocks.
The voice as a source of resonance and awareness
For many, Fourier analysis sounds primarily technical. But behind this method lies a universal truth that humanity has intuitively known for centuries: everything is vibration. Sound and voice form the foundation of how we as humans give meaning to the world. Voice is not only something we hear, but above all something we feel: resonance that moves through our body, our nervous system and our awareness. This analysis makes that visible. It takes the building blocks of the voice apart and reveals layers that we intuitively experience, but often no longer consciously recognize or name.
In many cultures, vocal sound is used as a carrier of values and connection. Think of singing in ceremonies, speeches that pass on wisdom, or the simple lullabies with which parents calm their child. These sounds carry information and meaning that go beyond words. A child unconsciously resonates with the frequency of its parents, a deeper knowing that we recognize even if we do not always understand it rationally.
It is precisely here that Fourier analysis gains a special significance. It is a bridge between what can be measured and what can be felt. Where the modern Western world often focuses on what is visible or audible on the surface, this technique exposes the subtle patterns beneath. It shows that the voice is more than pitch or volume: it is a personal compass that reflects values, emotions and potential.
The strength of Voice Your Future lies in that connection. By combining algorithmic processing with knowledge of personality and behavior, the voice becomes not merely a sound, but a mirror. It makes it possible for people to hear their own voice again and recognize themselves in it, not only in what they say, but in who they are. This is not a vague idea, but a reality confirmed by science and experience together. Fourier analysis has existed for decades as a proven technique. What voice analysis does is connect that method with a deeper human layer: awareness of resonance, insight into personal values and rediscovery of our universal strength.
When you truly learn to listen to your own voice, space is created to understand yourself more fully. That is where the power of this technique lies: it makes audible and visible what is already resonating within us. Everything is frequency. Everything is resonance. And our voice may well be the most direct and pure expression of that.
From analysis to behavioral profile
While this has been intuitively experienced for centuries, scientific research since the 1930s has shown how these insights can also be measured concretely. A voice is formed in part by vibrations of the vocal folds. These vibrations, measurable in Hertz, are as personal as a fingerprint. A low average fundamental frequency (F0), for example, more often correlates with dominance or decisiveness. Micro variations in pitch (jitter) or volume (shimmer) can indicate insecurity or, on the contrary, emotional stability.
But your learning style, your drivers or your pitfalls can also be read in your voice. Your acoustic vibrations are signals influenced by your neurophysiology and therefore indirectly by your personality structure. They make the voice a unique reflection of who you are.
To better understand this, it is useful to know that researchers divide voice information into different layers:
The recorded sound signals are analyzed, resulting in insight into these layers. How is that possible?
This is achieved through the previously mentioned Fourier analysis (FFT): a proven mathematical technique that converts continuous sound into a frequency spectrum. Just as you can unravel a chord on a piano into individual notes, Fourier analysis reveals the building blocks of a voice. The FFT converts a signal from the time domain to the frequency domain, allowing you to see which frequencies are present and how strong they are. This computational process forms the basis of modern speech technology and personality models based on voice.
Algorithms then learn to recognize patterns within this spectrum that correlate with behavior or preferences. Without Fourier analysis, these insights would remain elusive. Recently, the underlying algorithms and parameters have also been scientifically validated. Publication of this validation is expected soon. New AI models use a proven method as their foundation: spectrograms, visual representations of sound over time. These spectrograms recognize patterns that the human ear misses.
Conclusion
Your voice is more than sound. It is a digital fingerprint of behavior, preferences and personality. With the help of Fourier analysis and AI technology, this information can be unlocked and translated into usable insights about personality and skills.
Voice analysis therefore offers an objective and difficult to influence alternative or complement to questionnaires. It makes visible what is already resonating within us and offers organizations an additional lens to better see who thrives where. This supports recruitment and selection, creating strong matches between people and roles, and building teams that complement each other. The result? More insight into talent, better collaboration and ultimately more job satisfaction.
Much of who we are resonates in what we say. Your voice does not lie.
*) Sources used in this article can be requested via info@voiceyourfuture.com
