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<blockquote data-quote="Topper" data-source="post: 121948" data-attributes="member: 186250"><p>Yes very undesirable in any application involving sampling just a bit more visual with video signals. In order to minimise aliasing it is necessary to sample the signal a minimum number of times. The Nyquist sampling theorem provides us with the answer. The theroem states that if a continuous bandwidth limited signal contains no frequency componants higher than Fm, then the original signal can be recovered without distortion if it is sampled at at a sampling rate (Fs) of at least 2Fm samples per second. i.e. the minimum rate is Fs = 2Fm (where Fs is the sampling frequency). This is sometimes referred to the Nyquist Rate. In practice however one uses Fs > 2FM this then provides us with a guardband.</p><p></p><p>Dedicated to Eugene who probably knew this but doesn't know what to do at a party <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite14" alt=":-doh" title="DOH! :-doh" loading="lazy" data-shortname=":-doh" />!</p></blockquote><p></p>
[QUOTE="Topper, post: 121948, member: 186250"] Yes very undesirable in any application involving sampling just a bit more visual with video signals. In order to minimise aliasing it is necessary to sample the signal a minimum number of times. The Nyquist sampling theorem provides us with the answer. The theroem states that if a continuous bandwidth limited signal contains no frequency componants higher than Fm, then the original signal can be recovered without distortion if it is sampled at at a sampling rate (Fs) of at least 2Fm samples per second. i.e. the minimum rate is Fs = 2Fm (where Fs is the sampling frequency). This is sometimes referred to the Nyquist Rate. In practice however one uses Fs > 2FM this then provides us with a guardband. Dedicated to Eugene who probably knew this but doesn't know what to do at a party :-DOH! [/QUOTE]
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