Virtual Labs
IIT Kharagpur
Study of FIR filter design using window method:Lowpass and highpass
Instructions
Select FIR from Type
Select the sampling frequency (F
s
) and centre frequency (F
c
) of the input signal.
Put the value of FIR filter order from FIR order tab,select filter type from Calculation sinc lowpass or sinc highpass and attenuation(dB)
Click on the "Calculate" buttton to observe the Magnitude,Group delay,Impulse Response and simulation on plot
Note:
Make sure FIR order in range of 1 to 100
Type:
IIR
FIR
Fs:
Fc:
Fc2:
Biquad cascades:
Transform:
bilinear
matchedZ
Bilinear Characteristic:
Bessel 3dB
Bessel 1dB
Butterworth
Bilinear Type:
Lowpass
Highpass
Bandpass
Bandstop
Peak
Lowshelf
Highshelf
Lowpass BT
Highpass BT
A Weighting
MatchedZ Characteristic:
Bessel
Butterworth
Tschebyscheff 0.5dB
Tschebyscheff 1dB
Tschebyscheff 2dB
Tschebyscheff 3dB
Allpass
Impulse Response Length:
preGain:
Gain (dB):
FIR order:
Calculation
Sinc Lowpass
Sinc Highpass
Kaiser-Bessel
Attenuation (dB):
Magnitude Percent
Magnitude dB
Group Delay
Impulse Response
PoleZero
a
Input
Run
Simulation
Coefficients:
a
