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This middle-aged woman describes a fuzzy and rough voice quality with fading of strength and endurance across a typical day's use. A part of the explanation is seen here: an obvious furrow of the left vocal cord (arrow, right of photo). Glottic furrows are usually congenital defects involving thinning of the vocal ligament and application of epithelium (mucosa) directly to the ligament with little if any "Reinke's space" (superficial layer of lamina propria).
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Partially open phase of vibration, seen at F4 (349.23Hz) under strobe light reveals the issue of asymmetrical vibration and phase shifting that often correlates with rough quality.
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At lower pitch (approximately G3 (196.0Hz), very large amplitude of vibration points out the flaccidity of the vocal cords, and the furrow at the arrow.