speech.m

使用Matlab实现了FIR与IIR滤波器

function [ output_args ] = Untitled8( input_args )
%UNTITLED8 Summary of this function goes here
%  Detailed explanation goes here
[y,ft,bits]=wavread('hello.wav');
L=length(y);
disp('采样频率=');disp(ft);
disp('播放比特数=');disp(bits);
disp('采样点数=');disp(L);
Y=fft(y);
subplot(2,1,1);
plot(y);
xlabel('Time Index t');
ylabel('Amplitude');
title('时域图象');grid;
subplot(2,1,2);
plot(abs(Y));
xlabel('Frequence Index w');
ylabel('Amplitude');
title('频域图象');grid;