Archive for 02 Apr 2011

Sound capture (Part 3)

Part 1, 2, 3, 4, 5 Let’s have a look at the code structure for acquiring the signal and computing FFT. The big limitation here is memory. In spite of the ‘in place’ FFT calculation, at least 2 vectors of doubles are required occupying 2 times 4 bytes (for each double) times the number of samples. I built the acquisition […]