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Subject: Re: How does a mixer work?
References: <email@example.com> <firstname.lastname@example.org> <email@example.com>
Organization: The Armory
X-Newsreader: trn 4.0-test69 (20 September 1998)
From: firstname.lastname@example.org (Richard Steven Walz)
Date: 18 Oct 2002 19:15:40 GMT
In article ,
Don Pearce wrote:
>On 17 Oct 2002 21:44:09 GMT, email@example.com (Richard
>Steven Walz) wrote:
>>>>People use "mix" rather loosely in RF. Actually, a modulator multiplies.
>>>>A true audio mixer merely adds. Now when you add sinusoids you can wind
>>>>up doing an effective multiplication, but that's merely a side-effect.
>>>Pardon? That would be a piece of maths that is new to me. Please
>>Sorru, invert that. multiply<->addition. If you don't know this go to
>Could you please explain this explanation? What should I invert, and
>what does multiply<->addition mean?
>As I said, this maths is new to me. I'm a bit too old to go back to
>school at this stage, but I would like to know. I've tried adding sine
>waves in Mathcad, and for the life of me I can't wind up doing an
>effective multiplication - addition appears to be the limit. Perhaps
>you could supply a right hand side to this equation to illustrate the
>a sin(2 pi f1 t) + b sin(2 p f2 t) =
Is this a gag? Aren't YOU the "Telecommunications Consultant"?
If not you could have gotten it from the thread so far.
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