vorbis/lib/modes/psych_8.h

/********************************************************************
 *                                                                  *
 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
 *                                                                  *
 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
 * by the Xiph.Org Foundation http://www.xiph.org/                  *
 *                                                                  *
 ********************************************************************

 function: 8kHz psychoacoustic settings 
 last mod: $Id$

 ********************************************************************/

/* noise compander lookups */
static compandblock _psy_compand_8[3]={
  {{
     0, 1, 2, 3, 4, 5, 6,  7,     /* 7dB */
     8, 8, 9, 9,10,10,11, 11,     /* 15dB */
    12,12,13,13,14,14,15, 16,     /* 23dB */
    17,18,19,20,21,22,23, 24,     /* 31dB */
    25,26,27,28,29,30,31, 32,     /* 39dB */
  }},
  {{
     0, 1, 2, 3, 4, 5, 6,  7,     /* 7dB */
     8, 8, 9, 9,10,10,11, 11,     /* 15dB */
    12,12,13,13,14,14,15, 15,     /* 23dB */
    16,16,17,17,17,18,18, 19,     /* 31dB */
    19,19,20,21,22,23,24, 25,     /* 39dB */
  }},
  {{
     0, 1, 2, 3, 4, 5, 6,  6,     /* 7dB */
     7, 7, 6, 6, 5, 5, 4,  4,     /* 15dB */
     3, 3, 3, 4, 5, 6, 7,  8,     /* 23dB */
     9,10,11,12,13,14,15, 16,     /* 31dB */
    17,18,19,20,21,22,23, 24,     /* 39dB */
  }},
};

/* tonal masking curve level adjustments *************************/
static vp_adjblock _vp_tonemask_adj_8[4]={
  /* adjust for mode zero */
  /* 63     125     250     500     1     2     4     8    16 */
  {{-15,-15,-15,-15,-10,-10, -6,-2, 0, 0, 0, 0, 3, 3,99,99,99}}, /* -2 */
  {{-15,-15,-15,-15,-10,-10, -6,-2, 0, 0, 0, 0, 0, 0,99,99,99}}, /* -1 */
  {{-15,-15,-15,-15,-10,-10, -6,-2, 0, 0, 0, 0, 0, 0,99,99,99}}, /*  0 */
  {{-15,-15,-15,-15,-10,-10, -6,-2, 0, 0, 0, 0, 0, 0,99,99,99}}, /* 10 */
};

/* noise bias */
static noise3 _psy_noisebias_8[4]={
  /*  63     125     250     500      1k       2k      4k      8k     16k*/
  {{{-10,-10,-10,-10, -5, -5, -5,  3,  4,  8,  8,  8, 10, 10, 99, 99, 99},
    {-10,-10,-10,-10, -5, -2, -2,  3,  3,  4,  4,  5,  6,  8, 99, 99, 99},
    {-30,-30,-30,-30,-30,-24,-20,-14,-10, -6, -8, -8, -6, -6, 99, 99, 99}}},

  {{{-10,-10,-10,-10, -5, -5, -5,  0,  4,  8,  8,  8, 10, 10, 99, 99, 99},
    {-10,-10,-10,-10, -5, -5, -5,  0,  0,  4,  4,  4,  4,  4, 99, 99, 99},
    {-30,-30,-30,-30,-30,-24,-20,-14,-10, -6, -8, -8, -6, -6, 99, 99, 99}}},

  {{{-10,-10,-10,-10, -5, -5, -5,  0,  4,  8,  8,  8, 10, 10, 99, 99, 99},
    {-10,-10,-10,-10,-10,-10, -5, -5, -5,  0,  0,  0,  0,  0, 99, 99, 99},
    {-30,-30,-30,-30,-30,-24,-20,-14,-10, -6, -8, -8, -6, -6, 99, 99, 99}}},

  {{{-15,-15,-15,-15,-15,-12,-10, -8,  0,  2,  4,  4,  5,  5, 99, 99, 99},
    {-30,-30,-30,-30,-26,-22,-20,-14,-12,-12,-10,-10,-10,-10, 99, 99, 99},
    {-30,-30,-30,-30,-26,-26,-26,-26,-26,-26,-26,-26,-26,-24, 99, 99, 99}}},
};

static noiseguard _psy_noiseguards_8[3]={
  {10,10,-1},
  {10,10,-1},
  {10,10,-1},
};


/* ath ****************/
static int _psy_ath_floater_8[4]={
  -100,-100,-100,-105,
};
static int _psy_ath_abs_8[4]={
  -130,-130,-130,-140,
};

/* stereo mode by base quality level */
static adj_stereo _psy_stereo_modes_8[4]={
  /*  0   1   2   3   4   5   6   7   8   9  10  11  12  13  14  */
  {{  4,  4,  4,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3},
   {  6,  5,  5,  5,  5,  5,  5,  5,  4,  4,  4,  4,  4,  4,  4},
   {  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1},
   { 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99}},
  {{  4,  4,  4,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3},
   {  6,  5,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4},
   {  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1},
   { 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99}},
  {{  4,  4,  4,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3},
   {  6,  5,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4},
   {  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1},
   { 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99}},
  {{  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  3},
   {  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4,  4},
   {  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1},
   { 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99}},
};

/* tone master attenuation by base quality mode and bitrate tweak */
static att3 _psy_tone_masteratt_8[4]={
  {{ 33,  28,  13},  0,   0},  /* -2 */
  {{ 32,  28,  12},  0,   0},  /* -1 */
  {{ 30,  26,  12},  0,   0},  /*  0 */
  {{ 20,   0, -14},  0,   0},  /* 10 */
};

/* lowpass by mode **************/
static double _psy_lowpass_8[4]={2.6,3.,4.,4.};

/* noise normalization **********/
static int _noise_start_8[3]={
  64,64,64,
};
static int _noise_part_8[3]={
  8,8,8,
};