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CMSA Filter Designer

Electronics > Filter Designer
Designs a Digital Filter and draws the frequency response!!!
N.B. There's an overflow bug somewhere; let me know what settings cause it if you find it -

Fill in the cut-off frequency, select high or low-pass, and press "Design":

The sample rate is fixed at 20kHz
Cut-off Frequency (Hz, up to 10000):

Filter type:
Low Pass.
High Pass. 		Algorithm:
---IIR---
Chebychev type 1
Chebychev type 2
Butterworth
 ---FIR---
Remez
Impulse Invariant
Raised Cosine Window
Hamming Window
Kaiser Window
Bartlett (triangle) Window

n.b. some of these FIR designs did not work after the HP-UX port; this is fixed

Magnitude: Linear. deciBels.
-

Chebychev type-2 filters were added 24/8/95; Butterworth filters and PZ diagram added 8/5/96; FIR filters added 9/5/96. FIR impulse response and detail page added 16/4/98. IIR coefficient output added 27/8/99, Impulse-Invariant design added 10/7/00, Raised cos added 20/3/01 Ported to HP-UX after Sun web server died - 13/1/02. Kaiser window added 10/6/03.
The University has a very active DSP research group, and can undertake custom filter designs and specialised DSP of many types. Further details available;
Please contact Izzet Kale -
, or tel: +44 (0) 207 911 5157; fax: +44 (0) 207 580 4319
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