Yes it has. The main thing is that it has accelerators for 6 and 7 as factors - the old accelerators stopped at 5. 8192 doesn't have either of those factors (since it is a power of 2). But, there may have been bug fixes that I don't remember. I will zip up the latest code and send them to you this afternoon.
On Tue, Oct 19, 2010 at 9:15 AM, John Clements <[email protected]>wrote: > > On Oct 19, 2010, at 5:17 AM, Doug Williams wrote: > > > On my laptop: > > > > #lang racket > > > > (require "fft.rkt") > > > > (define v (build-vector 16384 (lambda (i) (random)))) > > > > (define v1 (vector-copy v)) > > > > (collect-garbage) > > (collect-garbage) > > (collect-garbage) > > (time (fft-complex-radix2-forward v1)) > > > > (define v2 (vector-copy v)) > > > > (collect-garbage) > > (collect-garbage) > > (collect-garbage) > > (time (fft-complex-forward v2)) > > > > (for/and ([i (in-range (vector-length v))]) > > (< (magnitude (- (vector-ref v1 i) (vector-ref v2 i))) 1e-4)) > > > > ==> > > > > cpu time: 94 real time: 94 gc time: 0 > > cpu time: 79 real time: 78 gc time: 0 > > #t > > > > I'll look at the rsound/fft implementation and see if I see the problem. > > It certainly sounds as though I broke it, or it changed after I got it. > Has the source changed since you sent it to me last year? > > John > >
_________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
