Returning to your earlier question....
> the manual to it states that it (rfft) returns non negative values
The manual states as you quote
> The output is another array containing the transform, non-redundant,
> non-negative spectrum only.
That is not the same as non-negative values. The opcode rfft output
is just an array of re-im values containing the non-negative DFT bins.
These complex numbers values may have negative real or imaginary
I hope that makes it a little clearer.
Csound mailing list
[log in to unmask]
Send bugs reports to
Discussions of bugs and features can be posted here