Signal Processing Toolbox

Frequency Specifications Region: Lowpass

IIR	FIR
Butterworth	Equiripple
Chebyshev Type I	Least-squares
Chebyshev Type II	Window
Elliptic	Constr. Least-Squares
Maximally flat	Complex Equiripple
	Maximally Flat

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
• Fc (or wc)--cutoff frequency, the frequency at 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
• Fpass (or wpass)--end of the passband
• Fstop (or wstop)--beginning 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
• Fpass (or wpass)--end of the 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
• Fpass (or wpass)--end of the passband
• Fstop (or wstop)--beginning 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
• Fstop (or wstop)--beginning 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
• Fpass (or wpass)--end of the passband
• Fstop (or wstop)--beginning 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
• Fpass (or wpass)--end of the 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
• Fpass (or wpass)--end of the passband
• Fstop (or wstop)--beginning of the stopband

IIR Maximally Flat

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:

• Fs (sampling frequency)--required when Hz, kHz, MHz, or GHz is selected
• Fc (or wc)--cutoff frequency, the frequency at which the magnitude response is 3 dB below the passband gain

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
• Fpass (or wpass)--end of the passband
• Fstop (or wstop)--beginning 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
• Fpass (or wpass)--end of the passband
• Fstop (or wstop)--beginning 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
• Fc (or wc)--cutoff frequency, the frequency 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
• Fpass (or wpass)--end of the passband
• Fstop (or wstop)--beginning of the stopband

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:

• Fs (sampling frequency)--required when Hz, kHz, MHz, or GHz is selected
• Fc (or wc)--cutoff frequency, the frequency at which the magnitude response is 6 dB below the passband gain

FIR Complex 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 sampling and cutoff frequencies:

• Fs (sampling frequency)--required when Hz, kHz, MHz, or GHz is selected
• Fstop1 (or Fstop2)--beginning of the stopbands
• Fpass1 (or Fpass2)--end of the passbands

FIR Maximally Flat

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:

• Fs (sampling frequency)--required when Hz, kHz, MHz, or GHz is selected
• Fc (or wc)--cutoff frequency, the frequency at which the magnitude response is 6 dB below the passband gain

Frequency Specifications Region

Frequency Specifications Region: Raised Cosine

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