A report on Hoarse voice

The vocal folds (or vocal cords) in the larynx vibrate to produce sound. When this process is disturbed hoarseness may ensue.
The vocal folds (or vocal cords) in the larynx vibrate to produce sound. When this process is disturbed hoarseness may ensue.

When the voice involuntarily sounds breathy, raspy, or strained, or is softer in volume or lower in pitch.

- Hoarse voice
The vocal folds (or vocal cords) in the larynx vibrate to produce sound. When this process is disturbed hoarseness may ensue.

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A bouncing ball captured with a stroboscopic flash at 25 images per second.

Stroboscope

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Instrument used to make a cyclically moving object appear to be slow-moving, or stationary.

Instrument used to make a cyclically moving object appear to be slow-moving, or stationary.

A bouncing ball captured with a stroboscopic flash at 25 images per second.
A strobe light flashing at the proper period can appear to freeze or reverse cyclical motion
1540 Strobolume, a professional grade stroboscope produced by General Radio
Close-up view of the 1540 Strobolume control box
Stroboscope on a gramophone turntable

In medicine, stroboscopes are used to view the vocal cords for the diagnosis of conditions that have produced dysphonia (hoarseness).