fast Fourier transform
When we wrote about accelerating Fast Fourier Transforms (FFTs) on the Pi back in January, several people asked what sort of real-world application FFTs can have. We talked about numerical analysis, cryptography, spectrograms and software-defined radio, among other things, in the comments on that post. All the same, FFTs are something that those who don’t … Continue reading →
Andrew Holme is well known to regular blog readers, as the creator of the awesome (and fearsomely clever)┬áhomemade GPS receiver. Over the last few months he’s been experimenting with writing general purpose code for the VideoCore IV graphics processing unit (GPU) in the BCM2835, the microchip at the heart of the Raspberry Pi, to create … Continue reading →