The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: Don Pearce
Subject: Re: How does a mixer work?
Date: Sat, 19 Oct 2002 08:23:38 +0430
References: <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org>
X-Newsreader: Forte Agent 1.91/32.564
On 19 Oct 2002 03:39:35 GMT, email@example.com (Richard
Steven Walz) wrote:
>In article <firstname.lastname@example.org>,
>Don Pearce wrote:
>>On 18 Oct 2002 19:15:40 GMT, email@example.com (Richard
>>Steven Walz) wrote:
>>>In article ,
>>>Don Pearce wrote:
>>>>On 17 Oct 2002 21:44:09 GMT, firstname.lastname@example.org (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.
>>No, Steve. You are the only person here who has stated that when you
>>add sine waves you effectively multiply. This was an invitation to
>>demonstrate this ridiculous claim. We all knew you couldn't do it, of
>>course, so perhaps now is the time to back down gracefully and admit
>>you were talking nonsense?
>I noted the operations were inverted in my first post and told you,
>but that obviously wasn't good enough for you, you disgusting piece
>of tarry shit.
So do I understand that you are instead claiming that when you
multiply two sine waves, you wind up effectively adding them? It
actually makes no more sense that way round.
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup