ref: d513d743fb5d9802e2d39d74a13f5628c1553059
dir: /src_FIX/SKP_Silk_define_FIX.h/
/*********************************************************************** Copyright (c) 2006-2010, Skype Limited. All rights reserved. Redistribution and use in source and binary forms, with or without modification, (subject to the limitations in the disclaimer below) are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. - Neither the name of Skype Limited, nor the names of specific contributors, may be used to endorse or promote products derived from this software without specific prior written permission. NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ***********************************************************************/ #ifndef SKP_SILK_DEFINE_FIX_H #define SKP_SILK_DEFINE_FIX_H #ifdef __cplusplus extern "C" { #endif /* Head room for correlations */ #define LTP_CORRS_HEAD_ROOM 2 #define LPC_CORRS_HEAD_ROOM 10 #define WB_DETECT_ACTIVE_SPEECH_LEVEL_THRES_Q8 179 // 179.2_Q8 = 0.7f required speech activity for counting frame as active /* DTX settings */ #define SPEECH_ACTIVITY_DTX_THRES_Q8 26 // 25.60_Q8 = 0.1f #define LBRR_SPEECH_ACTIVITY_THRES_Q8 128 /* level of noise floor for whitening filter LPC analysis in pitch analysis */ #define FIND_PITCH_WHITE_NOISE_FRACTION_Q16 66 /* bandwdith expansion for whitening filter in pitch analysis */ #define FIND_PITCH_BANDWITH_EXPANSION_Q16 64881 /* Threshold used by pitch estimator for early escape */ #define FIND_PITCH_CORRELATION_THRESHOLD_Q16_HC_MODE 45875 // 0.7 #define FIND_PITCH_CORRELATION_THRESHOLD_Q16_MC_MODE 49152 // 0.75 #define FIND_PITCH_CORRELATION_THRESHOLD_Q16_LC_MODE 52429 // 0.8 /* Regualarization factor for correlation matrix. Equivalent to adding noise at -50 dB */ #define FIND_LTP_COND_FAC_Q31 21475 #define FIND_LPC_COND_FAC_Q32 257698 // 6e-5 /* Find Pred Coef defines */ #define INACTIVE_BWExp_Q16 64225 // 0.98 #define ACTIVE_BWExp_Q16 65470 // 0.999 #define LTP_DAMPING_Q16 66 #define LTP_SMOOTHING_Q26 6710886 /* LTP quantization settings */ #define MU_LTP_QUANT_NB_Q8 8 #define MU_LTP_QUANT_MB_Q8 6 #define MU_LTP_QUANT_WB_Q8 5 #define MU_LTP_QUANT_SWB_Q8 4 /***********************/ /* High pass filtering */ /***********************/ /* Smoothing parameters for low end of pitch frequency range estimation */ #define VARIABLE_HP_SMTH_COEF1_Q16 6554 // 0.1 #define VARIABLE_HP_SMTH_COEF2_Q16 983 // 0.015 /* Min and max values for low end of pitch frequency range estimation */ #define VARIABLE_HP_MIN_FREQ_Q0 80 #define VARIABLE_HP_MAX_FREQ_Q0 150 /* Max absolute difference between log2 of pitch frequency and smoother state, to enter the smoother */ #define VARIABLE_HP_MAX_DELTA_FREQ_Q7 51 // 0.4 in Q7 #ifdef __cplusplus } #endif #endif