ELM Chan's FFT Library for Arduino

I'm planning to make my version of "color organ". http://neuroelec.com/2011/03/fft-library-for-arduino/
I tried couple of FFT code for Arduino and found ELM Chan's works best for me. It seems accurate and faster than others.
So I just more less package the library. All credit should go where it belongs.

Original Fixed point FFT library is from ELM Chan, Audio Spectrum Monitor
A way to port it to the Arduino library and most demo codes are from AMurchick http://arduino.cc/forum/index.php/topic,37751.0.html
Processing app is based on codes from boolscott Arduino + Processing : Analogue bar graph | the open source student

FFT Library and Processing code download : Google Code Archive - Long-term storage for Google Code Project Hosting.

Code : Google Code Archive - Long-term storage for Google Code Project Hosting.

Here is a demonstration video comparing FFT from Arduino and Ocilloscope

If you have any suggestion, let me know.

whenever I run this I keep getting this error

"FFT_ N" was not declared in this scope.

i am running visualizer in the same dir as FFFT.h and FFFT.s but when i run the visualizer, i only get one additional tab
and that is for FFFT.h

any ideas?

thanks

Sounds like a great idea. I'm just starting out working with the Arduino and am using this FFT library as well.

For anyone having trouble getting this to compile due to the Assembly file or any other problems, just extract the 'ffft' folder from ffft_Library.zip to <Arduino_Dir>/libraries/. Run the Arduino IDE and click File -> Examples -> ffft -> Examples -> visualizer. Either compile or upload to test the files out.

I need some help... how to do for 3 analog sensors from accelerometer.. I mean x, y & Z using FFT. but I need to watch the graph in processing..

Dear Sir,

I will be happy if you can send me a link for exe fail of Visualizator software on PC