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.

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sound head British  

noun

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

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Etymology

Origin of sound head

First recorded in 1930–35

Example Sentences

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

A proper diet and a sound head are closely allied, and those who will rightly exercise their soul-powers must be watchful of the stomach.

From Every Man His Own University by Conwell, Russell H.

If he did not always run well it was not for want of a sound head or a sharp eye. 

From Samuel Rutherford and some of his correspondents by Whyte, Alexander

The professor was a man of great science and was blessed with an almighty sound head.

From The Blind Spot by Hall, Austin

The virtue he loved was simple, sociable, gay, sprightly, and playful; to use one of his own expressions, ‘Ignorance and incuriousness are two charming pillows for a sound head.’

From An Essay In Aid Of A Grammar Of Assent by Newman, John Henry