hi...
i need to make some tests on audio watermarking attack codes for a college project using matlab, and i need this codes .i am a beginner in matlab, so i can't write the code myself...
i'd appreciate any help
Thank you

 

hi
i have some audio watermarking attack codes in matlab .i can not run them in matlab . i dont know. codes are true or no and i don not know how can use them?
please u check this code(i know u are busy but i need ur help) and tell me is it true?
thank u very much.

clc
clear
format long

cut_frequency=4000; %400 , 2000
type='low' ; %'high','low'
voice=wavread('watermark');
L=length(voice);
wn=cut_frequency/22050;
[b,a]=butter(4,wn,type);
y=filter(b,a,voice);
wavwrite(y,44100,'out2.wav')


an other code is:
clc
clear
format long

cut_frequency=200; %400 , 2000
type='high' ; %'high','low'
voice=wavread('watermark');
L=length(voice);
wn=cut_frequency/22050;
[b,a]=butter(4,wn,type);
y=filter(b,a,voice);
wavwrite(y,44100,'out2.wav')




and other code is :

clc
clear
format long

Fs1=44100;
Fs3=22500;
voice=wavread('watermark');
y1 = resample(voice,Fs3,Fs1);
wavwrite(y1,Fs3,'out2.wav');