The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Software » comp.soft-sys.matlab

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Using an ideal LPF filter on fft( ) in MATLAB
Replies: 0  

Advanced Search

Back to Topic List Back to Topic List  

Posts: 1
Registered: 12/4/13
Using an ideal LPF filter on fft( ) in MATLAB
Posted: Dec 4, 2013 11:05 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

abs(fft(x)) results in a peak on the LHS of the spectrum, and its reflected one on the RHS.

If I implemented an ideal LPF by simply setting inner values (between the two peaks) to zero, do I set the real part of fft(x) to zero, or do I set the real and imaginary parts of fft(x) to zero?

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.