i am doing a project on audio watermarking. in this after shaping the moise spectrum according to the frequency mask of the human auditory system, i am taking IFFT of the noise samples. the thing is that the number of frequency bins for the unfiltered noise and the mask are both 512. so i will get 512 points as the product of the above two . now i need to take ifft of 384 samples as per MPEG Audio Layer 1 model.But won't that distort and compromise the information contained in the 512 points when only 384 point IFFT is taken. what could be the solution to this?
FFT and IFFT
Started by ●April 11, 2006