Okay tahnk you eveyrone for your responses; I've been trying to figure out if the signal I'm trying to synthesize would be symmetric in any way, even, or odd. I know I'm trying to create a 'real' signal.. (I think.. the whole real vs imag. concept is still confusing for me in practice, thought I've done plenty of reading on it) So I have the code that performs an FFT on an audio file I have which plays the type of sound I am trying to simulate. I output all 1024 real and imag values after doing the FFT at a couple of time points and look through these values to see if I can find a pattern (i.e. real , even odd etc) So the FFT produces a complex output, both real and imaginaries are nonzero, but theere is no symmetrical pattern that I can see? The reason I want to know this is I thought that maybe I can input my spectral values into my inverse FFT in such a way to trick it into thinking it was say real and even, and then the inverse FFT would produce the correct output (I thought this might be a way to get around teh fact that i have no phase info?) Do you think this could make sense? Thanks! LD This message was sent using the Comp.DSP web interface on www.DSPRelated.com
Produce Audio Sound via Inverse FFT on Spectral Data
Started by ●June 13, 2005
Reply by ●June 29, 20052005-06-29