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Irregular Vibrato

颤音不规律

Vocal Science Principle

Irregular vibrato — vibrato lacks consistency and control.

Detection criteria:

  • Vibrato rate and/or extent fall outside the configured ideal range
  • Detected when vibrato is present but neither clearly excessive nor insufficient
  • Minimum vibrato presence required (rate > 0.5 Hz or extent > 5 cents)
  • Irregular vibrato indicates inconsistent laryngeal muscle coordination, where the oscillation pattern is unpredictable.

    Justin's Note

    健康的颤音是喉部肌肉放松的表现