ref: b21746855ba8f2eac67632590323bae56269eec7
dir: /amr-wb/p_med_o.h/
/*--------------------------------------------------------------------------*
* P_MED_O.H *
*--------------------------------------------------------------------------*
* Median open-loop lag search *
*--------------------------------------------------------------------------*/
Word16 Pitch_med_ol( /* output: open loop pitch lag */
Word16 wsp[], /* input : signal used to compute the open loop pitch */
/* wsp[-pit_max] to wsp[-1] should be known */
Word16 L_min, /* input : minimum pitch lag */
Word16 L_max, /* input : maximum pitch lag */
Word16 L_frame, /* input : length of frame to compute pitch */
Word16 L_0, /* input : old_ open-loop pitch */
Word16 * gain, /* output: normalize correlation of hp_wsp for the Lag */
Word16 * hp_wsp_mem, /* i:o : memory of the hypass filter for hp_wsp[] (lg=9) */
Word16 * old_hp_wsp, /* i:o : hypass wsp[] */
Word16 wght_flg /* input : is weighting function used */
);
Word16 Med_olag( /* output : median of 5 previous open-loop lags */
Word16 prev_ol_lag, /* input : previous open-loop lag */
Word16 old_ol_lag[5]
);
void Hp_wsp(
Word16 wsp[], /* i : wsp[] signal */
Word16 hp_wsp[], /* o : hypass wsp[] */
Word16 lg, /* i : lenght of signal */
Word16 mem[] /* i/o : filter memory [9] */
);