sound spectrograph

American  

noun

1. an electronic device for recording a sound spectogram.

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sound spectrograph British  

noun

1. an electronic instrument that produces a record ( sound spectrogram ) of the way in which the frequencies and intensities of the components of a sound, such as a spoken word, vary with time

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Example Sentences

Chiang writes with a gruff and ready heart that brings to mind George Saunders and Steven Millhauser, but he’s uncompromisingly cerebral: “Story of Your Life” contains explanations of variational calculus, charts that illustrate the mathematician Pierre de Fermat’s principle of least time, and sentences like “The sound spectrograph for ‘heptapod eats gelatin egg’ was analyzable.”

From The New Yorker

The most striking evidence came from a sound spectrograph, a machine that reduces speech to electronic "pictures" called spectrograms or voiceprints.

From Time Magazine Archive

By means of a sound spectrograph, Kersta converts spoken words into picture patterns that he says identify the speaker as reliably as his fingerprints.

From Time Magazine Archive