Hi, quick OT question for any of the granular synthesis brains out there... I want to reconstruct a signal from multiple overlapped segments. To use an overlapp-add method that perfectly reconstructs the original waveform I would need to window the segments... now thats fine as long as the overlap amount is less than 50 percent. I can use a Hanning window on the overlapping parts and sum them..... Hanning windows satisfy the sum to unity criterion. however, when the overlap is more than 50%, the half-Hanning windows applied to the start and end of the segments windows begin to overlap.... see this link: http://www.loopit.org/images/overlap.jpg
Now multiplying the overlapped half-Hanning windows together creates a new window function for the segments that suddenly does not satisfy the 'sum-to-unity' criterion.... The question is (if anybody can is at all interested):- WHAT window function should be used given ANY arbitrary overlap amount???
Any answers would really help me, though I'd be surprised if this gets a response.... ;) sorry 2 b so off topic, though for me it's pd related anyway(!). cheers
matt
-=-=-=-=-=-=-=-=-=-=-=-=- http://www.loopit.org/ -=-=-=-=-=-=-=-=-=-=-=-=-