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ANALOG
DEFINITION BY GAIN |
| Analog filters of functions LPF, HPF, BPF, and Notch up to the third
order can be synthesized from given attenuations at selected frequencies. Maximum
pass band ripple can optionally be specified for second order filters. |
ANALOG
DEFINITION BY MINIMUM ORDER TABLE (New to Ver 4.0) |
| This method inputs a filter's behavior in terms of its PassBand (1)corner
frequency or bandwidth, (2)Attenuation, and (3)Max Ripple, and its StopBand
(1)frequency or bandwidth, (2)Attenuation, and (3)Min Rejection. Super FILTER
uses this information to analyze each Filter Type(Butterworth, Chebyshev, etc.), and find
the minimal Order needed to define a filter with the given behavior. The results are
displayed in a table containing the Filter Type, the Minimal Order required, and the
Attenuation Level at the Stop Band Frequency for each Filter Type.
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FIR
DIGITAL DEFINITION BY GAIN |
| The Remez Exchange Algorithm is designed to define
Digital filters of order 3-2500, and of function LPF, HPF, BPF, Notch, and Multi Band. Using
(1)a selected Digital Network, the (2)filter order, (3)sampling clock, (4)edges of the
bands [Hz], (5)desired maximum ripple [dB] in the at the PassBand, and (6)desired minimum
rejection [dB] for the Stopband, the algorithm attempts to define a filter theat meets the
criteria. To facilitate the process, Super FILTER incorporates the Remez
Exchange Algorithm graphically.
The result features a FIR filter with symmetrical impulse response: h(n) = h(M-n-1),
Linear phase, Equiripple gain in the Pass- and Stop-Bands, and optimal design for a given
order. |
[Program features]
[Problem solving] [Download demo]
[Material and utilities] [Custom Designs]
[Agent contacts] [Purchase]
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