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

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

General Greene, who was well versed in military law, and was a man of sound head and kind heart, was president, and Colonel John Lawrence, judge advocate-general.

From The Student's Life of Washington; Condensed from the Larger Work of Washington Irving For Young Persons and for the Use of Schools by Irving, Washington

He had a sound head, and a heart equally sound.

From Thirty Years in the Itinerancy by Miller, Wesson Gage

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

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