ref: d513d743fb5d9802e2d39d74a13f5628c1553059
dir: /src_FIX/SKP_Silk_perceptual_parameters_FIX.h/
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#ifndef SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H
#define SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H
#include "SKP_Silk_perceptual_parameters.h"
#ifdef __cplusplus
extern "C"
{
#endif
/* reduction in coding SNR during low speech activity */
#define BG_SNR_DECR_dB_Q7 SKP_FIX_CONST( BG_SNR_DECR_dB, 7 )
/* factor for reducing quantization noise during voiced speech */
#define HARM_SNR_INCR_dB_Q7 SKP_FIX_CONST( HARM_SNR_INCR_dB, 7 )
/* factor for reducing quantization noise for unvoiced sparse signals */
#define SPARSE_SNR_INCR_dB_Q7 SKP_FIX_CONST( SPARSE_SNR_INCR_dB, 7 )
/* threshold for sparseness measure above which to use lower quantization offset during unvoiced */
#define SPARSENESS_THRESHOLD_QNT_OFFSET_Q8 SKP_FIX_CONST( SPARSENESS_THRESHOLD_QNT_OFFSET, 8 )
/* noise shaping filter chirp factor */
#define BANDWIDTH_EXPANSION_Q16 SKP_FIX_CONST( BANDWIDTH_EXPANSION, 16 )
/* difference between chirp factors for analysis and synthesis noise shaping filters at low bitrates */
#define LOW_RATE_BANDWIDTH_EXPANSION_DELTA_Q16 SKP_FIX_CONST( LOW_RATE_BANDWIDTH_EXPANSION_DELTA, 16 )
/* factor to reduce all bandwidth expansion coefficients for super wideband, relative to wideband */
#define SWB_BANDWIDTH_EXPANSION_REDUCTION_Q16 SKP_FIX_CONST( SWB_BANDWIDTH_EXPANSION_REDUCTION, 16 )
/* gain reduction for fricatives */
#define DE_ESSER_COEF_SWB_dB_Q7 SKP_FIX_CONST( DE_ESSER_COEF_SWB_dB, 7 )
#define DE_ESSER_COEF_WB_dB_Q7 SKP_FIX_CONST( DE_ESSER_COEF_WB_dB, 7 )
/* extra harmonic boosting (signal shaping) at low bitrates */
#define LOW_RATE_HARMONIC_BOOST_Q16 SKP_FIX_CONST( LOW_RATE_HARMONIC_BOOST, 16 )
/* extra harmonic boosting (signal shaping) for noisy input signals */
#define LOW_INPUT_QUALITY_HARMONIC_BOOST_Q16 SKP_FIX_CONST( LOW_INPUT_QUALITY_HARMONIC_BOOST, 16 )
/* harmonic noise shaping */
#define HARMONIC_SHAPING_Q16 SKP_FIX_CONST( HARMONIC_SHAPING, 16 )
/* extra harmonic noise shaping for high bitrates or noisy input */
#define HIGH_RATE_OR_LOW_QUALITY_HARMONIC_SHAPING_Q16 SKP_FIX_CONST( HIGH_RATE_OR_LOW_QUALITY_HARMONIC_SHAPING, 16 )
/* parameter for shaping noise towards higher frequencies */
#define HP_NOISE_COEF_Q16 SKP_FIX_CONST( HP_NOISE_COEF, 16 )
/* parameter for shaping noise extra towards higher frequencies during voiced speech */
#define HARM_HP_NOISE_COEF_Q24 SKP_FIX_CONST( HARM_HP_NOISE_COEF, 24 )
/* parameter for applying a high-pass tilt to the input signal */
#define INPUT_TILT_Q26 SKP_FIX_CONST( INPUT_TILT, 26 )
/* parameter for extra high-pass tilt to the input signal at high rates */
#define HIGH_RATE_INPUT_TILT_Q12 SKP_FIX_CONST( HIGH_RATE_INPUT_TILT, 12 )
/* parameter for reducing noise at the very low frequencies */
#define LOW_FREQ_SHAPING_Q0 SKP_FIX_CONST( LOW_FREQ_SHAPING, 0 )
/* less reduction of noise at the very low frequencies for signals with low SNR at low frequencies */
#define LOW_QUALITY_LOW_FREQ_SHAPING_DECR_Q1 SKP_FIX_CONST( LOW_QUALITY_LOW_FREQ_SHAPING_DECR, 1 )
/* fraction added to first autocorrelation value */
#define SHAPE_WHITE_NOISE_FRACTION_Q20 SKP_FIX_CONST( SHAPE_WHITE_NOISE_FRACTION, 20 )
/* fraction of first autocorrelation value added to residual energy value; limits prediction gain */
#define SHAPE_MIN_ENERGY_RATIO_Q24 SKP_FIX_CONST( SHAPE_MIN_ENERGY_RATIO, 24 )
/* noise floor to put a low limit on the quantization step size */
#define NOISE_FLOOR_dB_Q7 SKP_FIX_CONST( NOISE_FLOOR_dB, 7 )
/* noise floor relative to active speech gain level */
#define RELATIVE_MIN_GAIN_dB_Q7 SKP_FIX_CONST( RELATIVE_MIN_GAIN_dB, 7 )
/* subframe smoothing coefficient for determining active speech gain level (lower -> more smoothing) */
#define GAIN_SMOOTHING_COEF_Q10 SKP_FIX_CONST( GAIN_SMOOTHING_COEF, 10 )
/* subframe smoothing coefficient for HarmBoost, HarmShapeGain, Tilt (lower -> more smoothing) */
#define SUBFR_SMTH_COEF_Q16 SKP_FIX_CONST( SUBFR_SMTH_COEF, 16 )
#ifdef __cplusplus
}
#endif
#endif //SKP_SILK_PERCEPTUAL_PARAMETERS_FIX_H