19 lines
356 B
Matlab
19 lines
356 B
Matlab
clear all
|
|
close all
|
|
pkg load signal
|
|
[y,fs] = audioread('modulator22.wav');
|
|
sound(y, fs);
|
|
n = length(y);
|
|
t=0:1/fs:(n-1)/fs; % time range
|
|
spectrogram(y,fs,5,30);
|
|
|
|
[y, fs] = audioread('modulator22.wav');
|
|
n = 8;
|
|
Wn = 0.0453;
|
|
[b, a] = butter(n, Wn);
|
|
|
|
y = filter(b, a, y);
|
|
spectrogram(y,fs,5,30);
|
|
sound(y, fs);
|
|
audiowrite('butter.wav',y,fs);
|