FFT, I seeking source code for waveform tranformation into FFT spectrum

[riscy]

Has anyone know good webpage or book covering C# code in transformation
of real time or sampled time data into FFT spectrum display (using
GDI+).

I like to learn FFT processing in abc way...can anyone point me good
book or student course booklet.

Thanks.

 

[apm]

Has anyone know good webpage or book covering C# code in transformation
of real time or sampled time data into FFT spectrum display (using
GDI+).

I like to learn FFT processing in abc way...can anyone point me good
book or student course booklet.

Now it would be convenient if there were as much numerical software in C# as
in Fortran.

 

[Doug Arnott]

I like to learn FFT processing in abc way...can anyone point me good
book or student course booklet.

"Understanding Digital Signal Processing" by Richard Lyons.
http://www.amazon.com/exec/obidos/t...f=sr_1_1/102-0128510-8084105?v=glance&s=books

Chapter 1 is abc, but thereafter, at least for me, the math became
progressively harder and my comprehension diminshed accordingly.
Using the examples and after much study, I understood the mechanics
of the math to write a Discrete Fourier Transform (DFT) and low-pass
filter, however, I did not understand the beauty of the math (if you
get my meaning) to go past the first half of the book.

The DSP newsgroup is comp.dsp .

Here's Java source code using FFT from Craig Lindley's book of
"Digital Audio With Java":

ftp://ftp.prenhall.com/pub/ptr/professional_computer_science.w-022/digital_audio/

Doug