/* | |
** Copyright 2003-2010, VisualOn, Inc. | |
** | |
** Licensed under the Apache License, Version 2.0 (the "License"); | |
** you may not use this file except in compliance with the License. | |
** You may obtain a copy of the License at | |
** | |
** http://www.apache.org/licenses/LICENSE-2.0 | |
** | |
** Unless required by applicable law or agreed to in writing, software | |
** distributed under the License is distributed on an "AS IS" BASIS, | |
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
** See the License for the specific language governing permissions and | |
** limitations under the License. | |
*/ | |
/*--------------------------------------------------------------------------* | |
* P_MED_O.H * | |
*--------------------------------------------------------------------------* | |
* Median open-loop lag search * | |
*--------------------------------------------------------------------------*/ | |
#ifndef __P_MED_O_H__ | |
#define __P_MED_O_H__ | |
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] */ | |
); | |
#endif //__P_MED_O_H__ | |