He’s using a Fast Fourier Transform routine crafted in C to run as efficiently as possible on the 8-bit chip. The video after the break shows that the results are quite pleasing, with just a bit ...

From there, another Python script filters the captured waveform, applies a window function, calculates the Fourier transform and plots the spectrum into a graph. With the analyzer up and running ...

The Fast Fourier Transform (FFT) is a fundamental building block used in DSP systems, with applications ranging from OFDM based Digital MODEMs, to Ultrasound, RADAR and CT Image reconstruction ...

A more general form of analysis for transferring a time-domain signal to the frequency domain is called the Fourier transform. Compare: FOURIER SYNTHESIS, HELMHOLTZ RESONATOR, LAW OF SUPERPOSITION, ...

Fourier Transform Near-Infrared (FT-NIR) Spectrometers are used to identify and characterize chemicals and compounds in a test sample. These devices are based on the characteristic absorption or ...