I want to use the library function fir_fr32(), it is defined as:
void fir_fr32(const fract32 input,
and I check the blackfin-compiler-library-manual, I found this sentence:
The number of input samples and the length of the output vector are specified by the argument length.
Then I saw the example:
I'm wondering how this works, if I have an input array of length 256, then the filters coefficients number is 89, due to the convilution，I should get only 256-89+1=168 output,
how does this function work
plz give me more details about this function.