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Comb Filter

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Comb Filter

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Returns IIR coefficients for a Nth order Comb Filter

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Description

Usage: [B,A] = COMB(order, scalar);

            ORDER is the number of samples delayed prior to add
            SCALAR is the coefficient that will be applied to
               the delayed signal path at the final summation block.

Note, there are two types of comb filters. A DC-blocker and a DC-passer.
To get a DC-Blocker (tooth at DC), pass in a -1 for the scalar.
To get a DC-Passer (+6dB at DC), pass in a +1 for the scalar.

By default, if the scalar is not passed, a DC-Passer is assumed.

Required Products MATLAB
MATLAB release MATLAB 7.12 (R2011a)
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