playdb.m

里面囊括了基于matlab滤波器设计的各种.m文件

 % PLAYDB
% Plot contour map by using uniform scale logarithmically
% See also PLAYB

function playdb(Y,l)

m = size(Y,1);
x = linspace(0,1,m);
y = linspace(0,0.5,1024);
Y = dbvalue(Y/max(max(Y)));
v = linspace(-40,0,l);
contour(x,y,Y',v);
title('Input vs. Output Mapping');
xlabel('Output Frequency(FFT)');
ylabel('Input Sinusoidal Frequency(Normalized)');