diff options
Diffstat (limited to 'libaf/filter.h')
| -rw-r--r-- | libaf/filter.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libaf/filter.h b/libaf/filter.h index f36bc0bf2f..307760d856 100644 --- a/libaf/filter.h +++ b/libaf/filter.h @@ -45,14 +45,18 @@ // Exported functions extern _ftype_t fir(unsigned int n, _ftype_t* w, _ftype_t* x); + extern _ftype_t* pfir(unsigned int n, unsigned int k, unsigned int xi, _ftype_t** w, _ftype_t** x, _ftype_t* y, unsigned int s); extern int updateq(unsigned int n, unsigned int xi, _ftype_t* xq, _ftype_t* in); extern int updatepq(unsigned int n, unsigned int k, unsigned int xi, _ftype_t** xq, _ftype_t* in, unsigned int s); extern int design_fir(unsigned int n, _ftype_t* w, _ftype_t* fc, unsigned int flags, _ftype_t opt); + extern int design_pfir(unsigned int n, unsigned int k, _ftype_t* w, _ftype_t** pw, _ftype_t g, unsigned int flags); +extern int szxform(_ftype_t* a, _ftype_t* b, _ftype_t Q, _ftype_t fc, _ftype_t fs, _ftype_t *k, _ftype_t *coef); + /* Add new data to circular queue designed to be used with a FIR filter. xq is the circular queue, in pointing at the new sample, xi current index for xq and n the length of the filter. xq must be n*2 |