Simple FFT with Matlab

Replies

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  sid_thewall

  Rupam Das

  FFT or Fast Fourier Transform is an age old concept of digital implementation of DFT. Even after 50 years, FFT is kind of like nightmares to many engineers.
  
  So if you have DSP phobia and if you find FFT concepts difficult to understand, you can read the post:
  #-Link-Snipped-#
  
  or for any queries related to FFT,
  #-Link-Snipped-#

  Hi I am working on a project which involves acquiring heart sounds and analysing them using matlab.
  
  In this regard, I require the sampling frequency of the sounds which i collected from the following databases:
  
  #-Link-Snipped-#
  Techniques - Heart Sounds & Murmurs Exam - Physical Diagnosis Skills - University of Washington School of Medicine
  
  Without the sampling frequency I woont be able to design digital filters and further analysis in the frequency domain is impossible. Can you give me solutions to this problem?
  
  I used the wavread function in matlab.