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Article #205Re: Y [Luminance] signal on FM carrier wave.
From: Green Xenon [Radium]
Date: Sat, 03 Nov 2007 00:36
Date: Sat, 03 Nov 2007 00:36
40 lines
2898 bytes
2898 bytes
Roderick Stewart wrote: > In article <472b9a39$0$20584$4c368faf@roadrunner.com>, Green Xenon [Radium] > wrote: > >>Anyways, again, the following is interesting but only >>theoretically-possible. Not gonna happen with today's technology: >> >>The original Y signal is converted to QAM. This QAM signal is then >>broadcasted on an FM radio carrier wave whose base frequency is 300 Hz. >>300 Hz is the lowest ULF frequency and the lowest frequency used by >>telephones. > > > Not gonna happen at all. If you try to modulate a 300Hz carrier with 5MHz > video you'll end up with a mess. So decrease the 5 MHz frequency to a frequency that is low enough not to cause any distortion on a 300 Hz carrier. > > >>Prior to converting the Y signal to QAM, the temporal and spatial >>frequencies [excluding DC -- 0 hertz] are downshifted in real time [sort >>of like the video-equivalent of the voice-changers used on the phone >>which can decrease the pitch of your voice in real time without >>decreasing the speed of your speech]. This frequency downshifting does >>not involve decreasing the "speeds" of the temporal or spatial >>components of the Y-signal. All temporal and spatial frequencies other >>than zero-hertz are shifted closer to zero. This decreases the bandwidth >>of the Y-signal. No low-pass filtering. No changing the speed of the >>temporal signal. No changing the size of the spatial signal. > > You still believe in magic, don't you? What about this is magic?
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X-Google-Thread: f928c,ab81b61b65e80ebd X-Google-Thread: ffcae,ab81b61b65e80ebd X-Google-Thread: 107cee,ab81b61b65e80ebd X-Google-Thread: f7d8a,ab81b61b65e80ebd X-Google-Thread: fdad6,ab81b61b65e80ebd X-Google-Attributes: gidf928c,gidffcae,gid107cee,gidf7d8a,gidfdad6,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!border1.nntp.dca.giganews.com!border2.nntp.dca.giganews.com!nntp.giganews.com!cyclone1.gnilink.net!gnilink.net!nx01.iad01.newshosting.com!newshosting.com!post02.iad01!roadrunner.com!not-for-mail Date: Fri, 02 Nov 2007 16:36:12 -0800 From: "Green Xenon [Radium]" <glucegen1@excite.com> User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.8b) Gecko/20050217 MIME-Version: 1.0 Newsgroups: uk.tech.digital-tv,uk.tech.broadcast,sci.electronics.misc,ba.broadcast,alt.radio.broadcasting Subject: Re: Y [Luminance] signal on FM carrier wave. References: <472b9a39$0$20584$4c368faf@roadrunner.com> <VA.000001a5.026b23b2@removethisbit.beeb.net> In-Reply-To: <VA.000001a5.026b23b2@removethisbit.beeb.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Lines: 40 Message-ID: <472bb331$0$25644$4c368faf@roadrunner.com> Organization: Road Runner High Speed Online http://www.rr.com X-Complaints-To: abuse@rr.com X-Original-Bytes: 2602