Altera FFT IP core 9.1 problems

[Altera_Forum]

I have got some pros with the FFT IP core,I input the sine wave from a ADC,inside the FPGA ,I used the FFT IP core, but the result is what we expected, it seems that all the output are noises, I think the timing of the core is quite right ,how could it be this? Plz hlp me!

[Altera_Forum]

does FFT ip be free? do you have licence ? I want to use FFT to do signal processing, can you give me a licence. 

 additionally, i want to know how to give the input datas in QUARTUS waveform? thank you !