Hi,
I have checked closely with the NatureDSP Signal Library reference. I have been able to use some of the functions in the NatureDSP library, like the FFTs so the libnaturedsp.a seems to work.
I am having an issue with bkfir32x32_process, I cannot get it to work and produce meaningful output.
Here is the relevant code:
#define M 256 // filter length
#define N 80 // Block size
void TEST_BKFIR_SCENARIO1()
{
int extIR = 0;
int alloc_bytes = bkfir32x32_alloc(M,extIR);
void *objmem = malloc(alloc_bytes);
// N samples per block
int32_t bkfir_in[N];
int32_t bkfir_out[N];
//
for (int i = 0; i < N; i++)
bkfir_in[i] = (int) bkfir_in_ref[i];
bkfir32x32_handle_t bkfir_handle = bkfir32x32_init(objmem, M, extIR, h_ref);
bkfir32x32_process( bkfir_handle, bkfir_out, bkfir_in, N);
for (int i = 0; i < N; i++)
printf("%d ", bkfir_in[i]);
printf("\n\n");
for (int i = 0; i < N; i++)
printf("%d ", bkfir_out[i]);
printf("\n\n");
for (int i = 0; i < M; i++)
printf("%d ", h_ref[i]);
}
The first printed function prints the bkfir inputs:
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
The second prints the bkfir outputs:
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
The third prints the bkfir filter coefficients:
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Am I missing something or am I doing anything wrong?
The NatureDSP Signal Library reference mentions the use of:
bkfir32x32_alloc, bkfir32x32_init and bkfir32x32_process, I am attempting to make correct use of these functions but the output doesn't make sense.
Any help is appreciated, thank you.
