Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

center frequency of a signal

Status
Not open for further replies.
S

saima_nujhat

Newbie level 2
Joined
May 22, 2013
Messages
2
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,289
Hello,

I have a band limited signal. It was obtained for ultrasound imaging purpose. I want to know the center frequency of the signal. But looking at the spectrum plotted by MATLAB fft, it is not possible to determine the center frequency of the signal, because at the central region the band there are too many peaks. Also, the spectrum within the band is not smooth at all. How can I determine the center frequency of the signal.?

-saima
 

dear;

what is the signal bandwidth? if it is even then fc= bw/2 and if odd fc=bw/2+1.

Savor, Best.
 

You should precise what is the center frequency. Is it only one in the signal?
You can calculate the STFT and average every frequency bar over time. This operation should smooth the spectrum (if it's noisy), and expand every tonal component.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top