Error while using a iir flter in matlab gui callback function:: Error using fdesign.ab​stracttype​/ellip (line 17) Frequency specifications must be between 0 and 2000.

Code for the filter is here::

It is a bandpass filter

function Hd = Filter33

% All frequency values are in Hz.

Fs = 22050; % Sampling Frequency

Fstop1 = 760; % First Stopband Frequency

Fpass1 = 900; % First Passband Frequency

Fpass2 = 2500; % Second Passband Frequency

Fstop2 = 2950; % Second Stopband Frequency

Astop1 = 80; % First Stopband Attenuation (dB)

Apass = 1; % Passband Ripple (dB)

Astop2 = 80; % Second Stopband Attenuation (dB)

match = 'both'; % Band to match exactly

% Construct an FDESIGN object and call its ELLIP method.

h = fdesign.bandpass(Fstop1, Fpass1, Fpass2, Fstop2, Astop1, Apass, ... Astop2, Fs);

Hd = design(h, 'ellip', 'MatchExactly', match);

freqz(Hd)

% [EOF]

[Honglei Chen]

The script you posted worked fine for me, no error. What is the callback function you are talking about? What are the parameters when you call it in the callback?