ボイスバイタル

Analyze a 5-second sustained vowel to visualize health trends from subtle variations in vocal fold vibration. Measures 6 acoustic parameters based on peer-reviewed research in speech pathology and psychoacoustics. Parameters: - F0 (Fundamental Frequency) [Titze 1994] - Jitter — neuromuscular stability index [Baken & Orlikoff 2000] - Shimmer — vocal fold symmetry and closure [Baken & Orlikoff 2000] - HNR (Harmonics-to-Noise Ratio) [Yumoto et al. 1982] - CPP (Cepstral Peak Prominence) [Hillenbrand et al. 1994] - Alpha Ratio [Laukkanen et al. 1997] Features: - Instant analysis from 5 seconds of voice - 3-axis scoring: Stress, Fatigue, Stability - Daily trend charts - Full parameter references Not a medical device. Results are for reference only.