AnsweredAssumed Answered

Troubles with fft functions of filter.h and trans.h

Question asked by fryandrew on Jun 21, 2011
Latest reply on Jun 21, 2011 by fryandrew

Hi everybody,


I'm using ADSP-21375 and I'm trying to make some manipulations on audio data, but I have some problems.

I want to apply fft on the first input, make some maths and then apply ifft to back in time domain. At last, I want to make a convolution with the second input. I'm not interested in real-time.


Problem using filter.h:

- I can't use convolve function with complex_float type.

- Can I write and to get the real and imaginary part of the output of the rfftN?


Problem using trans.h:

- This header does not contain a convolve function.

- Moreover, I read that rfftN and ifftN functions take the input data reversing the bit. Does it mean I have to flip the input and/or the output? This point makes me confused.


Thank you very much for your help!