Как по Английски будет heterodyn

adjective

Relating to the production of a lower frequency from the combination of two almost equal high frequencies, as used in radio transmission.

Примеры использования:

A heterodyne interferometer

verb

Combine (a high-frequency signal) with another to produce a lower frequency.

Примеры использования:

Heterodyning converts incoming reference and test signals to 45 mhz