Actually, the frequency mixer wikipedia page is describing a kind of mixer that multiplies. The wikipedia page on "electronic mixers" is more informative: > A

Actually, the frequency mixer wikipedia page is describing a kind of mixer that multiplies. The wikipedia page on "electronic mixers" is more informative: > An electronic mixer is a device that combines two or more electrical or electronic signals into one or two composite output signals. There are two basic circuits that both use the term mixer, but they are very different types of circuits: additive mixers and multiplicative mixers. https://en.wikipedia.org/wiki/Electronic_mixer https://en.wikipedia.org/wiki/Electronic_mixer This was news to me; the mixers I'm familiar with are additive. I would call something that multiplies a ring modulator or a heterodyne or something like that. The website could have been a bit more clear that they're talking about a different kind of mixer than how most people understand the term.