Hallo, Josh Steiner hat gesagt: // Josh Steiner wrote:
what is the advantage of spitting out these values in polar coords?
According to the DSP-Guide it this:
When should you use rectangular notation and when should you use polar? Rectangular notation is usually the best choice for calculations, such as in equations and computer programs. In comparison, graphs are almost always in polar form. As shown by the previous example, it is nearly impossible for humans to understand the characteristics of a frequency domain signal by looking at the real and imaginary parts. In a typical program, the frequency domain signals are kept in rectangular notation until an observer needs to look at them, at which time a rectangular-to-polar conversion is done.
http://www.dspguide.com/ch8/8.htm
Probably Miller thinks of Pd primarily as a tool for calculations so he kept the re/im representation. I also think, that the algorithm to calculate the Fourier transform, the Fast-FT or FFT, generates re/im pairs, so skipping the final conversion to polar unless necessary is faster. But I need to verify this. Maybe some DSP expert (Chuck?) can confirm this?
Frank Barknecht _ ______footils.org_ __goto10.org__