adjective
heterodyne
mixing two signals of different frequencies to produce a new, lower one
In a sentence
Six example sentences with heterodyne, each labelled with its topic.
A heterodyne receiver mixes the incoming signal with a local oscillator, producing a lower frequency the amplifier handles cleanly.
Technology
Laboratory spectrometers use a heterodyne technique to shift infrared light into a range that ordinary electronics can measure.
Science
The theremin is a heterodyne instrument, and the pitch you hear is the difference between two circuits the player never touches.
Music
Fessenden described the heterodyne principle in 1901, decades before affordable tubes made the circuit practical for home radios.
History
A heterodyne bat detector shifts the ultrasonic calls down into hearing range, so surveyors identify species by ear at dusk.
Environment
Doppler ultrasound uses a heterodyne stage to turn the tiny frequency shift from moving blood into an audible whoosh.
Medicine
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Found in these word lists
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