I am trying to read in values from a wav file. Each sample is 16 bits long (eg equivalent to a short int).
I want to run a FFT routine on the values then which takes a double array.
When I try to read in the values from the wav file with fread straight to the double array (with the code)
it puts two samples into each element of the double array sound_buffer as (presumably) each element is 32 bits and each sample is only 16 bits long.Code:
fread(sound_buffer, 2, 512, WavFile);
This means that the values in the double array are useless.
I have it working by first f reading the values into a short int array then copying them into a double array but this is hugely ineffecient as it's going to be called a few hundred times a second.
Does anyone know how to use fread to copy one short int to every double element in the array?
Thanks a million,