# How do i get the sound of a cosine signal

11 views (last 30 days)
Deniz Bozdogan on 12 Jun 2021
Edited: Scott MacKenzie on 12 Jun 2021
I am trying to get the sound of a signal with different phases where its frequency is a frequency of a musical note. f=493.88. My code is below.
t=[0:0.2:20];
xc1=cos(2*pi*493.88*t);
xc12=cos(2*pi*493.88*t+pi/4);
xc13=cos(2*pi*493.88*t+pi/2);
xc14=cos(2*pi*493.88*t+pi);
soundsc(xc1, 1000)
When i try to run the sound i just get a tapping sound for 1 milisecond and then it stops. How do get the sound of the signal? Thank you in advance.

Scott MacKenzie on 12 Jun 2021
You've only got 100 sample points and the sampling rate is too low. Try this...
t=[0:0.2:2000];
xc1=cos(2*pi*493.88*t);
soundsc(xc1, 8000)
Deniz Bozdogan on 12 Jun 2021
That's what i was asking for thank you.

Image Analyst on 12 Jun 2021
Scott is right on.
For what it's worth, I'm attaching my demo for making a warbling, decaying chirp sound:

### Categories

Find more on Spectral Measurements in Help Center and File Exchange

R2020b

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!