how to decimate signal with fs 44100 into fs10k

hello everyone

how can i decimate a signal which fs is 44100 and i want the the fs is 10000???

i am getting the error (Resampling rate R must be a positive integer.)

clear all

close all

clc

fs=44100;

t=0:1/fs:5-1/fs;

f=200;

x=10*sin(2*pi*f*t);

d_x=decimate(x,4.41);

figure

subplot(211);

plot(t,x);

title("Orignal Signal,");

subplot(212);

plot(d_x);

title("Decimated Signal");

Answer 1

[dpb]

decimate does what the name says -- sets a factor of n fewer samples.

You're looking for resample instead

d_x=resample(x,10.0,44.1);

[Syed Ali Faraz Jaffery]

i have tried this but the error (Resampling rate R must be a positive integer.) is still occur.

[dpb]

That's because I cut 'n pasted and then didn't change your function name. As says in text, use resample instead of decimate. "Do what I mean, not what I say..." :)

[Syed Ali Faraz Jaffery]

The resample change the frequencies of the loaded audio signal.

But finnaly i write the code to achieve 10k fs

clear all
close all
clc
fs=44100;  
t=0:1/fs:1-1/fs;
f=1;
x=10*sin(2*pi*f*t);
c_x=decimate(x,441);
d_x=interp(c_x,100);
figure
subplot(211);
stem(x);
title("Orignal Signal,");
subplot(212);
stem(d_x);
title("Decimated Signal");