Yes, I was a bit surprised at the way the title hinted that this was a new 'trick' thing, when I have been familiar with Fast Fourier Transforms since forever when it comes to audio processing and reverb convolution etc., but then I realised that this is domain specific knowledge that is entirely due to me working in this capacity for so long. To someone in another industry or engineering capacity, FFTs may be an unknown entity, and indeed be an 'interesting discovery'.
