| /* |
| ** 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__ |
| |