f_tipsfilt.asv

来自「digital signal processing常用工具箱」· ASV 代码 · 共 31 行

% GUI module => g_filters
%
% User tips:
% 
% 1. All changes to edit box parameters are activated with 
%    the Enter key.
%
%    F_0     = lower cutoff frequency
%    F_1     = upper cutoff frequency
%    B       = width of transition band
%    fs      = sampling frequency
%    delta_p = passband ripple
%    delta_s = stopband attenuation
%
% 2. Use the slider bar to adjust the number of bits N 
%    used for coefficient quantization.
%
% 3. The User-defined filter option requires the name of a
%    MAT-file containing the coefficient vectors a and b, 
%    and the sampling frequency fs.
%
% 4. The Menu options include the following:
%
%    Realization => direct-form, cascade-form realizations
%    Save        => save x,y,a,b,fs in a MAT-file
%    Caliper     => find coordinates of point on plot
%    Print       => send screen to printer or a file
%    Help        => user tips and g_filters help
%    Exit        => return to calling program
%
% 5. Direct-form realizations of IIR filters with