/* filter */
extern aubio_filter_t * new_aubio_filter(uint_t samplerate, uint_t order);
-extern aubio_filter_t * new_aubio_adsgn_filter(uint_t samplerate);
extern aubio_filter_t * new_aubio_cdsgn_filter(uint_t samplerate);
extern void aubio_filter_do(aubio_filter_t * b, fvec_t * in);
extern void aubio_filter_do_outplace(aubio_filter_t * b, fvec_t * in, fvec_t * out);
extern void aubio_filter_do_filtfilt(aubio_filter_t * b, fvec_t * in, fvec_t * tmp);
-/*extern int del_aubio_filter(aubio_filter_t * b);*/
+extern void del_aubio_filter(aubio_filter_t * b);
+
+extern aubio_filter_t * new_aubio_adsgn_filter(uint_t samplerate);
+extern void aubio_adsgn_filter_do(aubio_filter_t * b, fvec_t * in);
+extern void del_aubio_adsgn_filter(aubio_filter_t * b);
+
+extern aubio_filter_t * new_aubio_cdsgn_filter(uint_t samplerate);
+extern void aubio_cdsgn_filter_do(aubio_filter_t * b, fvec_t * in);
+extern void del_aubio_cdsgn_filter(aubio_filter_t * b);
/* biquad */
extern aubio_biquad_t * new_aubio_biquad(lsmp_t b1, lsmp_t b2, lsmp_t b3, lsmp_t a2, lsmp_t a3);