Thread Closed

reverse FFT

 
Share Thread Thread Tools
Aug11-04, 03:48 PM   #1
 

reverse FFT


Hi,
I am using matlab.
I was wondering if anyone knew how to take the results from a spectrum analysis of a signal in x at sample frequency fs:
y = abs(fft(x,fs));
and turn it back into the signal x. My purpose is to modify the spectrum by removing certain frequencies found in the spectrum analysis and then turning it back into a signal to hear what it sounds like.

Thanks
Jay
PhysOrg.com
PhysOrg
engineering news on PhysOrg.com

>> NASA: Austin, calling Austin. 3-D pizzas to go
>> Research suggests modular design competence can benefit new product development
>> Army ground combat systems adopts tool for choosing future warfighting vehicles
Aug11-04, 07:04 PM   #2
 
Recognitions:
Gold Membership Gold Member
Science Advisor Science Advisor
apply the filter, then retransform.
Thread Closed
Thread Tools


Similar Threads for: reverse FFT
Thread Forum Replies
Reverse diffraction General Physics 3
Reverse Reactions Biology, Chemistry & Other Homework 1
Reverse the number Programming & Comp Sci 0
reverse polarity Electrical Engineering 1
Reverse Piezoelectricity General Physics 7