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The Basement
FM transmissions and the Doppler effect.
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<blockquote data-quote="Chris Nixon" data-source="post: 6519" data-attributes="member: 1947"><p>I'm not sure why this popped into my head earlier, but it did. If you have a performer running around the stage with an FM transmitter, why doesn't the Doppler effect cause problems?</p><p></p><p><a href="http://en.wikipedia.org/wiki/Doppler_effect" target="_blank">Doppler effect - Wikipedia, the free encyclopedia</a></p><p></p><p>From my basic understanding of FM radio, this should be causing DC offset by moving the "base line" frequency above or below the carrier frequency the receiver is tuned to. Is it the case that this DOES happen but it's filtered out in the receiver?</p><p></p><p>Is the amount of shift small enough to be negligible because of the speed of the radio waves relative to the performers movement?</p><p></p><p>Chris</p></blockquote><p></p>
[QUOTE="Chris Nixon, post: 6519, member: 1947"] I'm not sure why this popped into my head earlier, but it did. If you have a performer running around the stage with an FM transmitter, why doesn't the Doppler effect cause problems? [URL="http://en.wikipedia.org/wiki/Doppler_effect"]Doppler effect - Wikipedia, the free encyclopedia[/URL] From my basic understanding of FM radio, this should be causing DC offset by moving the "base line" frequency above or below the carrier frequency the receiver is tuned to. Is it the case that this DOES happen but it's filtered out in the receiver? Is the amount of shift small enough to be negligible because of the speed of the radio waves relative to the performers movement? Chris [/QUOTE]
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