On Thu, Mar 22, 2012 at 4:36 PM, Jussi Kalliokoski < jussi.kalliokoski@gmail.com> wrote: > On Thu, Mar 22, 2012 at 11:27 PM, Raymond Toy <rtoy@google.com> wrote: > >> > > Do you have a specific need for a non-power of two analysis? I'm just >> curious. >> > > It just seems like an arbitrary limit. Most of the time, you probably want > to set the length in seconds, not samples, and then you won't get a > power-of-two. > Yes, I'll agree that it's an arbitrary limit. And, yes, seconds (or more lilkely, fractions of a second) is probably more useful and scales better if the sample rate changes. > > >> Also, FFTW uses the GPL license, so if the browser is also not GPL, there >> are potential legal issues. This is where you go ask a lawyer. >> > > There are other ones as well (kissfft is BSD 3-clause for example, IIRC), > but I don't think the licensing of certain FFT implementations is a valid > argument to base the spec on. > No, but you mentioned using FFTW in particular which has some licensing issues. > > Also, the algorithm isn't complex, you could implement it without a > library. > Agreed. But getting a fast one is complex. Thanks for the info, Ray
Received on Friday, 23 March 2012 16:34:34 UTC