Frequency Content (Marius & Elsabe )

Subject: Frequency Content
From:    Marius & Elsabe  <vulcan(at)PARYS.CO.ZA>
Date:    Tue, 30 Jul 2002 19:23:26 +0200

Hello everyone, I am in desperate need of a way to determine the frequency content of a 'raw' amplitude-time sample. I know that Fourier Transform can do this, but all of the texts I have read are at the advanced level, and quite frankly I have no idea what they are talking about. The raw data is in the form of a 512 byte array, defined as char rawdata[512]. This array is continually filled by my microphone audio grabbing code. Now I need to be able to pass this array to a function which would fill another array, say fourierdata, with the frequency information. If anyone can be of assistance, I would really appreciate it. Specifically, if you can supply me with C code to implement such a fourier function, I would be very greatful. Thank you, Marius Myburg

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