C5/ 527.426 Hz, vowel “A” — crescendo, piano. Spectral analysis.
Acoustic Purity and Glottal Stability (The “Anti-AI” Proof)
Acoustic Object: Sustained Pitch C5 (532 Hz)
Measurement Chain: RME Professional Interface / Large Diaphragm Condenser
Technical Findings:
- Glottal Periodicity (Jitter): The analysis reveals a Local Jitter of 0.043%. In vocal science, this represents an almost absolute suppression of involuntary frequency perturbations. While AI often creates “perfect” zero-jitter signals, this value shows the organic micro-fluctuations of a human larynx operating at the highest possible level of neuromuscular coordination.
- Harmonic Definition (HNR): A value of 41,08 dB HNR was recorded. This confirms that the vocal fold closure is so efficient that the ratio of periodic signal to turbulent noise is 4000:1. This effectively debunking claims of “breathiness” or “vocal strain” and proves a healthy, laser-like glottal strike.
- Frequency Deviation: Over a 3-second duration, the standard deviation remained at a negligible 3,9 Hz, confirming the “Point Zero” structural stability of the vocal tract.
Conclusion: The signal exhibits a level of purity typically associated with synthetic oscillators, yet it retains the biological phase-shifts of a living organism. This is a definitive marker of an elite, “non-breath” vocal technique.
