2010-01-18 01:54 AM
Complex/real, 16/32bit, radix4/2 FFT, windowing, sqrt and magnitude library
#great?thanks?2011-05-17 04:36 AM
has any one found the 256 and 512 point FFT from the attachments?
2011-05-17 04:36 AM
Hi,
Ivan,thanks for your great work�?2011-05-17 04:36 AM
Hi all,
I've just noticed that Ex_FFT128Real_32b.s files do not describe input and output data properly. I forgot to change data description from complex FFT to real FFT. void FFT128Real_32b(int *y, int *x); Original description (wrong): ; x[N] = {re0,im0,re1,im1, ... re(N-1),im(N-1)} ; y[N+2] = {DC,0,reF1,imF1,reF2,imF2,.. reF(N),0 } New descrition (correct): N is 128 int x[N] = { x0, x1, x2 ... x(N-1) } ; 32 bit int scaled for FFT, 128 real elements int y[N+2] = {DC,0,reF1,imF1,reF2,imF2,.. reF(N/2),0 }, 32 bit int, 66 complex elements Input data restrictions remains the same: x must be scaled to 1/2 of the full range to avoid overflow (+- 2^30) regards, Ivan2011-05-17 04:36 AM
I'm also interested. Is it possible to reupload these attachments?
2011-05-17 04:36 AM
Hi all,
I've noticed that attachments are not working very well in the new forum. I put all posted Cortex M3 FFT library files to the embeddedsignals.com website. The exact address is: Ivan