search for: maxmiz

...hardware > > approach will fit in > > your AEC module? > > Sure, use the right ordering (and be careful with scaling!) and it'll work. In the FIX_POINT version of the spx_fft function, where is the actual code that do the forward FFT normaliaztion by 1/N? I saw the code first maxmize the input before the FFT and renormalize it back afterwards. Isn't this making the signal bigger and easy to overflow? If I am not mistaking, the input to the kiss_fft is the 2's complement value. I use the Xilinx Logicore FFT IP which also supports the 16bit fixed point FFT and it has so...

Hi Jean-Marc and list, Is the spx_fft function in fftwrap.c a standard fft function? void spx_fft(void *table, spx_word16_t *in, spx_word16_t *out) When I say standard, I mean the input "in" is 128 point short data for example and the output "out" is 128 short complex value which is stored in 256 short array with real and image part. Looks like the function did some