FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/vad.h @ 100:d5bab777865a

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gsmefr-decode utility written
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 26 Nov 2022 22:07:55 +0000
parents 988fd7ff514f
children 756605c4850f
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1 /***************************************************************************
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2 *
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3 * File Name: vad.h
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4 *
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5 * Purpose: Contains the prototypes for all functions of voice activity
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6 * detection. Also contains the type definition for the pseudo
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7 * floating point data type.
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8 *
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9 **************************************************************************/
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10
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11 void vad_reset (struct EFR_encoder_state *st);
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12
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13 Word16 vad_computation (
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14 struct EFR_encoder_state *st,
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15 Word16 r_h[],
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16 Word16 r_l[],
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17 Word16 scal_acf,
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18 Word16 rc[],
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19 Word16 ptch
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20 );
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22 void energy_computation (
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23 Word16 r_h[],
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24 Word16 scal_acf,
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25 Word16 rvad[],
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26 Word16 scal_rvad,
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27 Pfloat * acf0,
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28 Pfloat * pvad
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29 );
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30
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31 void acf_averaging (
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32 Word16 r_h[],
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33 Word16 r_l[],
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34 Word16 scal_acf,
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35 Word32 L_av0[],
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36 Word32 L_av1[]
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37 );
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38
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39 void predictor_values (
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40 Word32 L_av1[],
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41 Word16 rav1[],
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42 Word16 *scal_rav1
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43 );
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45 void schur_recursion (
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46 Word32 L_av1[],
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47 Word16 vpar[]
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48 );
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49
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50 void step_up (
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51 Word16 np,
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52 Word16 vpar[],
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53 Word16 aav1[]
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54 );
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56 void compute_rav1 (
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57 Word16 aav1[],
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58 Word16 rav1[],
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59 Word16 *scal_rav1
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60 );
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61
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62 Word16 spectral_comparison (
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63 Word16 rav1[],
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64 Word16 scal_rav1,
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65 Word32 L_av0[]
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66 );
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67
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68 void threshold_adaptation (
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69 Word16 stat,
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70 Word16 ptch,
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71 Word16 tone,
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72 Word16 rav1[],
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73 Word16 scal_rav1,
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74 Pfloat pvad,
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75 Pfloat acf0,
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76 Word16 rvad[],
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77 Word16 *scal_rvad,
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78 Pfloat * thvad
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79 );
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80
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81 void tone_detection (
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82 Word16 rc[],
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83 Word16 *tone
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84 );
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85
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86 Word16 vad_decision (
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87 Pfloat pvad,
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88 Pfloat thvad
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89 );
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90
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91 Word16 vad_hangover (
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92 Word16 vvad
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93 );
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94
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95 void periodicity_update (
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96 struct EFR_encoder_state *st,
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97 Word16 lags[]
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98 );