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Old 10-14-2015, 07:08 PM   #46
Time Waster
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Join Date: Aug 2013
Location: Bowral, Australia
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Originally Posted by EvilDragon View Post
Filters ALWAYS influence the phase (unless they're linear phase, but then they have their own set of cons)! Not just the frequency.
After reading up on the science, I get this:

You can create a filter by mixing a phase shifted copy of a signal with the original signal. The resulting signal will be also be phase shifted from the original. Therefore for a signal filtered by any means will result in a signal which is phase shifted from the original.

Which I guess is the same sort of principle as:

A fundamental frequency plus a harmonic series will result is a sawtooth waveform and therefore a sawtooth waveform produced by ant means will have a fundamental frequency and a series of harmonics.
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