Details
No assembly language! The standard Arduino library calls are used for analog input.
16 point, floating point FFT with no optimizations. The whole FFT happens in about 8 ms.
The power spectrum is grouped into three bins and the LEDs are driven with PWM.
An electret mic is connected to the analog input via a cap, and a voltage divider biases the analog input at mid range.
Some aliasing is apparent because I don't low-pass the microphone input.
Reference: Numerical Recipes in C.
More details: scottrharris.blogspot.com
i too would like if you could post some of the code you used for this project.
mccleejo 1 month ago
BORING
villalobos94cl 3 months ago
Where did you find the code? I am very interested in this project and this could save me a lot of time.
mikehill10000 1 year ago
Can you please send me the schematic and the source code/
manutube8080 1 year ago