FreeCalypso > hg > gsm-codec-lib
view libgsmefr/vad.h @ 47:89945a3b576e
gsmefr-rec2etsi test program added
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 25 Nov 2022 04:01:13 +0000 |
parents | 36e1363ad885 |
children | af4b075d0313 |
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/*************************************************************************** * * File Name: vad.h * * Purpose: Contains the prototypes for all functions of voice activity * detection. Also contains the type definition for the pseudo * floating point data type. * **************************************************************************/ /* Struct for storing pseudo floating point exponent and mantissa */ struct _fp { Word16 e; /* exponent */ Word16 m; /* mantissa */ }; typedef struct _fp Pfloat; void vad_reset (void); Word16 vad_computation ( Word16 r_h[], Word16 r_l[], Word16 scal_acf, Word16 rc[], Word16 ptch ); void energy_computation ( Word16 r_h[], Word16 scal_acf, Word16 rvad[], Word16 scal_rvad, Pfloat * acf0, Pfloat * pvad ); void acf_averaging ( Word16 r_h[], Word16 r_l[], Word16 scal_acf, Word32 L_av0[], Word32 L_av1[] ); void predictor_values ( Word32 L_av1[], Word16 rav1[], Word16 *scal_rav1 ); void schur_recursion ( Word32 L_av1[], Word16 vpar[] ); void step_up ( Word16 np, Word16 vpar[], Word16 aav1[] ); void compute_rav1 ( Word16 aav1[], Word16 rav1[], Word16 *scal_rav1 ); Word16 spectral_comparison ( Word16 rav1[], Word16 scal_rav1, Word32 L_av0[] ); void threshold_adaptation ( Word16 stat, Word16 ptch, Word16 tone, Word16 rav1[], Word16 scal_rav1, Pfloat pvad, Pfloat acf0, Word16 rvad[], Word16 *scal_rvad, Pfloat * thvad ); void tone_detection ( Word16 rc[], Word16 *tone ); Word16 vad_decision ( Pfloat pvad, Pfloat thvad ); Word16 vad_hangover ( Word16 vvad ); void periodicity_update ( Word16 lags[], Word16 *ptch );