What are the 12-14 Parameters of Human Voice that Determines the Voice Print?

Relatively stable characteristics :

  • Vocal tract length
  • Vocal tract shape
  • Vocal cord length (pitch)
  • Gender (Breathiness)
  • Nasal cavity size and shape
  • Speaking rate and prosody
  • Language, dialect, and accent

Transient characteristics :

  • Health
  • Emotional state
  • Environment