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Article #125Re: Using an FM-Carrier for the Y [Luminance] Signal -- how to relieve the bandwidth issue?
From: Brian Gaff
Date: Sat, 27 Oct 2007 14:00
Date: Sat, 27 Oct 2007 14:00
31 lines
3158 bytes
3158 bytes
Why do you think they used such a wide band fm for radio? Also there is often pre emphasis to look at as well. Brian -- Brian Gaff - briang1@blueyonder.co.uk Note:- In order to reduce spam, any email without 'Brian Gaff' in the display name may be lost. Blind user, so no pictures please! "Roderick Stewart" <escapetime@removethisbit.beeb.net> wrote in message news:VA.0000018f.006be928@removethisbit.beeb.net... > In article <4722f832$0$25703$4c368faf@roadrunner.com>, Green Xenon > [Radium] wrote: >> >>So there is no way to decrease how far the sidebands will go? >> >> > With FM? Nope, not in the way you're hoping. Modulate a carrier Fc >> > with a frequency Fm, and the first sidebands will be at Fc+Fm and >> > Fc-Fm, just as would be true with AM. That's the narrowest you can >> > get. >> >> So a higher-frequency modulation signal will result in more distant >> sidebands than a lower-frequency modulation signal? E.g. a 10,000 Hz >> tone will result in sidebands further from the base carrier frequency >> than a 1,000 Hz signal? > > By George! I think he's got it! > > Rod. >
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X-Google-Thread: f928c,9d8320c16fbdcf84 X-Google-Thread: 1133a5,9d8320c16fbdcf84 X-Google-Thread: 115947,9d8320c16fbdcf84 X-Google-Thread: 1118be,7e05cb8426dfb96 X-Google-Thread: ffcae,7e05cb8426dfb96 X-Google-Thread: 107cee,7e05cb8426dfb96 X-Google-Thread: f508e,9d8320c16fbdcf84 X-Google-Thread: f7d8a,9d8320c16fbdcf84 X-Google-Thread: fdad6,9d8320c16fbdcf84 X-Google-Attributes: gidf928c,gid1133a5,gid115947,gid1118be,gidffcae,gid107cee,gidf508e,gidf7d8a,gidfdad6,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!news.glorb.com!feeder.news-service.com!feeder2.cambrium.nl!feeder5.cambrium.nl!feed.tweaknews.nl!68.142.88.75.MISMATCH!hwmnpeer01.ams!news.highwinds-media.com!cyclone01.ams!news.ams.newshosting.com!pe2.news.blueyonder.co.uk!blueyonder!pe1.news.blueyonder.co.uk!blueyonder!text.news.blueyonder.co.uk!53ab2750!not-for-mail Reply-To: "Brian Gaff" <briang1@blueyonder.co.uk> From: "Brian Gaff" <briang1@blueyonder.co.uk> Newsgroups: uk.tech.digital-tv,rec.video.production,uk.media.tv.misc,sci.electronics.components,uk.tech.broadcast,sci.electronics.misc,aus.radio.broadcast,ba.broadcast,alt.radio.broadcasting References: <46fc71d2$0$24285$4c368faf@roadrunner.com> <u9hus4-6vi.ln1@radagast.org> <4722f832$0$25703$4c368faf@roadrunner.com> <VA.0000018f.006be928@removethisbit.beeb.net> Subject: Re: Using an FM-Carrier for the Y [Luminance] Signal -- how to relieve the bandwidth issue? Lines: 33 Organization: Warthog Enterprises X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-RFC2646: Format=Flowed; Original Message-ID: <1wHUi.37915$c_1.31099@text.news.blueyonder.co.uk> Date: Sat, 27 Oct 2007 14:00:29 GMT NNTP-Posting-Host: 82.43.144.244 X-Complaints-To: http://netreport.virginmedia.com X-Trace: text.news.blueyonder.co.uk 1193493629 82.43.144.244 (Sat, 27 Oct 2007 15:00:29 BST) NNTP-Posting-Date: Sat, 27 Oct 2007 15:00:29 BST