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  1. #1
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    Application of Legendre Filter


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  2. #2
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    Re: Application of Legendre Filter

    I compared filter characteristics of the followings.

    Butterworth : order=3, ωp=1.0, Ap=3dB
    Chebyshev Type I(Passband Ripple) : order=3, ωp=1.0, Ap=3dB
    Chebyshev Type II(Stopband Ripple) : order=3, ωp=1.0, Ap=3dB, ωs=1.8
    Legendre : order=3, ωp=1.0, Ap=3dB

    Also I attached a figure which shows order dependency of Legendre Filter.

    I don't think Legendre filter has distict advantage.
    I think this shows a reason why Legendre filter is unpopular.



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