Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.


dpb
Posts:
9,804
Registered:
6/7/07


Re: Need help in doing fft for a large matrix
Posted:
Feb 8, 2013 8:50 AM


On 2/8/2013 3:17 AM, Gupta wrote:
...Don't toppost...hard conversation follow makes...
...
> my question is why i am not able to use it for 1x8e6 matriy.....is > there any problem with the funtion fft to process these number of > samples??? ...
I presume above was intended as E+6 not E6.
See my earlier responseworks fine here (as far as ML is concerned, anyway, reality of what you get is another matter) w/ a limited amount of memory.
If the length is owing to desire for resolution and the number of samples, look up "zoom" fft algorithms...




