sound head

American  

noun

Movies.

1. a mechanism through which film passes in a projector for conversion of the soundtrack into audio-frequency signals that can be amplified and reproduced.

---

sound head British  

noun

1. the part of a film projector that reproduces the sound in a film

---

Etymology

Origin of sound head

First recorded in 1930–35

Example Sentences

But at length Chrissy, aware of the liberty Bourhope took in thus making her his study, got restless and troubled in her sound head and warm heart.

From Girlhood and Womanhood The Story of some Fortunes and Misfortunes by Tytler, Sarah

But I do say that an empire presents many difficult problems, and that the men who accept its responsibilities need a sound head, clean hands, and above all a pure heart.

From The Power of Womanhood, or Mothers and Sons A Book For Parents, And Those In Loco Parentis by Hopkins, Ellice

Washington sent him Arnold, the dare-devil of the army, and Lincoln, a man of sound head, steady hand, and even temper, as a counterpoise to Arnold's over-confident and impetuous nature.

From Burgoyne's Invasion of 1777 With an outline sketch of the American Invasion of Canada, 1775-76. by Drake, Samuel Adams

He is described as a person of great force of character and many virtues—as "a man of good stature, comely visage, enterprising genius, sound head, vigorous spirit, and generous nature."

From A Life of Gen. Robert E. Lee by Cooke, John Esten

It is chiefly this sensibility that constitutes genius; to which a sound head and a good heart are as effectual as a lively imagination.

From Essays on Taste by Cohen, Ralph