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FFT library function

Question asked by M.Antony on Oct 29, 2010
Latest reply on Nov 8, 2010 by Yaniv.Sapir

I had a problem with the FFT function rfft_fr16, it takes fract16, as input and gives output in the same format. But the codec generates its output in short   format, and I have to pass these data to rfft_fr16. How can convert the short format data in to fract16 before passing it to rfft_fr16?. Also I have to do averaging on the FFT output. If I use the inbuit arithmetic function on fract16, it takes much processing time, Instead can I convert back fract16 format output into short and do the required arithmetic? Please help....