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 ...

[Simon Inns] just rolled out his latest project, a PIC based spectrum analyzer. He’s using a Fast Fourier Transform routine crafted in C to run as efficiently as possible on the 8-bit chip.

The output from the speaker is then sent to an FFT (fast fourier transform) app for Android devices, which produces a picture of a waveform. [schoolie] then opens the picture in MS Paint and uses ...

To show the Fourier effect more dramatically I built a circuit to improve the signal’s rise time by feeding the signal through a fast gate. Figure 2 – Square wave fixer-upper circuit. It is possible ...

The LTE FFT LogiCORE™ IP provides support for all transform point sizes defined by the 3GPP-LTE specifications, including the 1536pt transform required for 15MHz bandwidth support, enabling resource ...