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Old 19th August 2009   #16
Paul Frindle
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Joined: Dec 2002
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Quote:
Originally Posted by Mayor999 View Post
Question:

Would a LP filter set to near or below (20k) the nyquist frequency possibly reveal any clipping which may occur from the reconstruction filter?
Yes - to some extent it will :-)

However it will not be an accurate result because of phase shifting within the filter that actual reconstruction does not (or should not) have.

Also you must bear in mind that what comes out of the filter to be metered is also at the base sample rate - so it too can have IS overs that are not revealed - and so on :-(

What's needed is an oversampled (or multiphase) filter with similar general characteristics of a real DAC...
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