for digitally filtering the output signal of the second delta sigma modulator stage; and wherein said means for combining {HEAD ~ output signals} of {TAIL ~ said notch filter means} and said delay means also combines the output signal of said additional notch filter means 
of
for digitally filtering the output signal of the second delta sigma modulator stage ; and wherein said means for combining { HEAD ~ output signals } of { TAIL ~ said notch filter means } and said delay means also combines the output signal of said additional notch filter means
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