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Frequency Specifications Region: Bandstop
IIR Butterworth
Select the units for frequency specifications from the Units list:
Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
Hz (default)
kHz
MHz
GHz
If Specify order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fc1 (or wc1)--first cutoff frequency, the frequency preceding the passband at which the magnitude response is 3 dB below the passband gain
- Fc2 (or wc2)--second cutoff frequency, the frequency following the passbandat which the magnitude response is 3 dB below the passband gain
If Minimum order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fstop1 (or wstop1)--beginning of the stopband
- Fpass2 (or wpass2)--beginning of the second passband
- Fstop2 (or wstop2)--end of the stopband
IIR Chebyshev Type I
Select the units for frequency specifications from the Units list:
Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
Hz (default)
kHz
MHz
GHz
If Specify order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fpass2 (or wpass2)--beginning of the second passband
If Minimum order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fstop1 (or wstop1)--beginning of the stopband
- Fpass2 (or wpass2)--beginning of the second passband
- Fstop2 (or wstop2)--end of the stopband
IIR Chebyshev Type II
Select the units for frequency specifications from the Units list:
Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
Hz (default)
kHz
MHz
GHz
If Specify order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fstop1 (or wstop1)--beginning of the stopband
- Fstop2 (or wstop2)--end of the stopband
If Minimum order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fstop1 (or wstop1)--beginning of the stopband
- Fpass2 (or wpass2)--beginning of the second passband
- Fstop2 (or wstop2)--end of the stopband
IIR Elliptic
Select the units for frequency specifications from the Units list:
Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
Hz (default)
kHz
MHz
GHz
If Specify order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fpass2 (or wpass2)--beginning of the second passband
If Minimum order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fstop1 (or wstop1)--beginning of the stopband
- Fpass2 (or wpass2)--beginning of the second passband
- Fstop2 (or wstop2)--end of the stopband
FIR Equiripple
Select the units for frequency specifications from the Units list:
Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
Hz (default)
kHz
MHz
GHz
Specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fstop1 (or wstop1)--beginning of the stopband
- Fpass2 (or wpass2)--beginning of the second passband
- Fstop2 (or wstop2)--end of the stopband
FIR Least-Squares
Select the units for frequency specifications from the Units list:
Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
Hz (default)
kHz
MHz
GHz
Specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fstop1 (or wstop1)--beginning of the stopband
- Fpass2 (or wpass2)--beginning of the second passband
- Fstop2 (or wstop2)--end of the stopband
FIR Window
Select the units for frequency specifications from the Units list:
Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
Hz (default)
kHz
MHz
GHz
If Specify order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fc1 (or wc1)--first cutoff frequency, the frequency preceding the stopband at which the magnitude response is 6 dB below the passband gain
- Fc2 (or wc2)--second cutoff frequency, the frequency following the stopband at which the magnitude response is 6 dB below the passband gain
If Minimum order is selected in the Filter Order region, specify the following frequencies in the text boxes:
- Fs (sampling frequency)--required when
Hz, kHz, MHz, or GHz is selected
- Fpass1 (or wpass1)--end of the first passband
- Fstop1 (or wstop1)--beginning of the stopband
- Fpass2 (or wpass2)--beginning of the second passband
- Fstop2 (or wstop2)--end of the stopband
- Bandwidth--for FIR Raised Cosine design method only, the width of the transition zone.
- Rolloff--for FIR Raised Cosine design method only, determines the excess bandwidth from ideal in the transition zone.
Cutoff frequency * rolloff = excess bandwidth.
For example, if the cutoff frequency is 12000 Hz and Rolloff is 0.25, the excess bandwidth is 3000 Hz so the transition would be from 9000 to 15000 Hz.
FIR Constr. Least-Squares
Select the units for frequency specifications from the Units list:
Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
Hz (default)
kHz
MHz
GHz
Specify the sampling and cutoff frequencies:
- Fc1 (or wc1)--first cutoff frequency, the frequency preceding the passband at which the magnitude response is 6 dB below the passband gain
- Fc2 (or wc2)--second cutoff frequency, the frequency following the passbandat which the magnitude response is 6 dB below the passband gain
| | Frequency Specifications Region: Bandpass | | Frequency and Magnitude Specifications Regions: Other Filters | |
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