ref: 708eea7d2978b554421e6f485ce237430cfeed80
dir: /psych.c/
/*
* Psychoacoustics
*
* Copyright (c) 1999 M. Bakker
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/**************************************************************************
Version Control Information Method: CVS
Identifiers:
$Revision: 1.69 $
$Date: 2000/10/06 14:47:27 $ (check in)
$Author: menno $
*************************************************************************/
#include <math.h>
#include <memory.h>
#include "psych.h"
#include "transfo.h"
double sqrt2048, sqrt256;
SR_INFO sr_info_aac[MAX_SAMPLING_RATES+1] =
{
{ 8000, 40, 15,
{
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 16,
16, 16, 16, 16, 16, 16, 20, 20, 20, 20, 24, 24, 24, 28,
28, 32, 32, 36, 40, 44, 48, 52, 56, 60, 64, 80
}, {
4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 16, 20, 20
}
}, { 11025, 43, 15,
{
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12,
12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24,
24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 64
}, {
4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 20
}
}, { 12000, 43, 15,
{
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12,
12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24,
24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 64
}, {
4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 20
}
}, { 16000, 43, 15,
{
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 12, 12, 12,
12, 12, 12, 12, 12, 12, 16, 16, 16, 16, 20, 20, 20, 24,
24, 28, 28, 32, 36, 40, 40, 44, 48, 52, 56, 60, 64, 64, 64
}, {
4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 12, 12, 16, 20, 20
}
}, { 22050, 47, 15,
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 12, 12, 12, 12, 16, 16, 16, 20, 20, 24, 24, 28, 28, 32,
36, 36, 40, 44, 48, 52, 52, 64, 64, 64, 64, 64
}, {
4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 16, 16, 20
}
},{ 24000, 47, 15,
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8,
8, 8, 8, 12, 12, 12, 12, 16, 16, 16, 20, 20, 24, 24, 28, 28, 32,
36, 36, 40, 44, 48, 52, 52, 64, 64, 64, 64, 64
}, {
4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 12, 16, 16, 20
}
}, { 32000, 51, 14,
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8,
8, 8, 8, 12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28,
28, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32
},{
4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 16
}
}, { 44100, 49, 14,
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8,
12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 96
}, {
4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 16
}
}, { 48000, 49, 14,
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8,
12, 12, 12, 12, 16, 16, 20, 20, 24, 24, 28, 28, 32, 32, 32, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 96
}, {
4, 4, 4, 4, 4, 8, 8, 8, 12, 12, 12, 16, 16, 16
}
}, {64000, 47, 12,
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
8, 8, 8, 8, 12, 12, 12, 16, 16, 16, 20, 24, 24, 28,
36, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40,
40, 40, 40, 40, 40
},{
4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 32
}
}, { 88200, 41, 12,
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 16, 16, 24, 28,
36, 44, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
},{
4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 36
}
}, { 96000, 41, 12,
{
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
8, 8, 8, 8, 8, 12, 12, 12, 12, 12, 16, 16, 24, 28,
36, 44, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
},{
4, 4, 4, 4, 4, 4, 8, 8, 8, 16, 28, 36
}
},
{ -1 }
};
double sample[MAX_TIME_CHANNELS*2][BLOCK_LEN_LONG*2];
/* sample value */
FFT_TABLE_LONG fft_tbl_long; /* table for long fft */
FFT_TABLE_SHORT fft_tbl_short; /* table for short fft */
PARTITION_TABLE_LONG part_tbl_long;
PARTITION_TABLE_SHORT part_tbl_short;
DYN_PART_TABLE_LONG dyn_long;
DYN_PART_TABLE_SHORT dyn_short;
PSY_STATVARIABLE_LONG psy_stvar_long[MAX_TIME_CHANNELS*2];
/* variables for long block */
PSY_STATVARIABLE_SHORT psy_stvar_short[MAX_TIME_CHANNELS*2];
/* variables for short block */
void EncTf_psycho_acoustic_init( void )
{
int chanNum;
psy_fft_table_init(&fft_tbl_long, &fft_tbl_short);
/* initializing fft table */
for (chanNum=0;chanNum<MAX_TIME_CHANNELS*2;chanNum++) {
psy_calc_init(&sample[chanNum], &psy_stvar_long[chanNum], &psy_stvar_short[chanNum]);
/* initializing static variables */
}
}
void psy_fft_table_init(FFT_TABLE_LONG *fft_tbl_long,
FFT_TABLE_SHORT *fft_tbl_short
)
{
int i;
/* generating Hann window */
for(i = 0; i < BLOCK_LEN_LONG*2; i++)
fft_tbl_long->hw[i] = 0.5 * (1-cos(2.0*M_PI*(i+0.5)/(BLOCK_LEN_LONG*2)));
for(i = 0; i < BLOCK_LEN_SHORT*2; i++)
fft_tbl_short->hw[i] = 0.5 * (1-cos(2.0*M_PI*(i+0.5)/(BLOCK_LEN_SHORT*2)));
}
/*
* This Function calculates the Frequency in Hertz given a
* Bark-value. It uses the Traunmueller-formula for bark>2
* and a linear inerpolation below.
* KAF
*/
double bark2hz (double bark)
{
double hz;
if(bark>2.0)
hz = 1960 / (26.81 / (bark + 0.53) - 1);
else
hz = bark * 102.9;
return (hz);
}
/*
* This Function calculates the Frequency in Bark given a
* Frequency-value in Hertz. It uses the Traunmueller-formula
* for frequency>200Hz and a linear inerpolation below.
* KAF
*/
double hz2bark (double hz)
{
double bark;
if(hz>200.0)
bark = 26.81 / (1 + (1960 / hz)) - 0.53;
else
bark = hz / 102.9;
return (bark);
}
void psy_part_table_init(double sampling_rate,
PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short
)
{
int b,bb;
double tmp;
int cbands, prev_cbound, crit_bands, cbound;
cbands = (int)hz2bark(sampling_rate/2.0) + 1;
cbands *= 3;
part_tbl_long->sampling_rate = (int)sampling_rate;
part_tbl_long->w_low[0] = 0;
part_tbl_long->w_high[0] = 1;
part_tbl_long->width[0] = 1;
prev_cbound = 0;
crit_bands = 0;
for(b = 1; b <= cbands; b++)
{
cbound = (int)(bark2hz((double)b/3) * (double)BLOCK_LEN_LONG * 2.0 / sampling_rate + 0.5);
if(cbound > prev_cbound) {
crit_bands++;
part_tbl_long->w_low[crit_bands] = min(prev_cbound,BLOCK_LEN_LONG-1);
part_tbl_long->w_high[crit_bands] = min(cbound,BLOCK_LEN_LONG);
part_tbl_long->width[crit_bands] =
part_tbl_long->w_high[crit_bands] - part_tbl_long->w_low[crit_bands];
prev_cbound = cbound;
if (part_tbl_long->w_high[crit_bands] == BLOCK_LEN_LONG)
break;
}
}
part_tbl_long->len = crit_bands+1;
// printf("%d %d\t",part_tbl_long->len, part_tbl_long->w_high[crit_bands]);
cbands /= 3;
part_tbl_short->sampling_rate = (int)sampling_rate;
part_tbl_short->w_low[0] = 0;
part_tbl_short->w_high[0] = 1;
part_tbl_short->width[0] = 1;
prev_cbound = 0;
crit_bands = 0;
for(b = 1; b <= cbands; b++)
{
cbound = (int)(bark2hz((double)b/*/3*/) * (double)BLOCK_LEN_SHORT * 2.0 / sampling_rate +0.5);
if(cbound > prev_cbound) {
crit_bands++;
part_tbl_short->w_low[crit_bands] = min(prev_cbound,BLOCK_LEN_SHORT-1);
part_tbl_short->w_high[crit_bands] = min(cbound,BLOCK_LEN_SHORT);
part_tbl_short->width[crit_bands] =
part_tbl_short->w_high[crit_bands] - part_tbl_short->w_low[crit_bands];
prev_cbound = cbound;
if (part_tbl_short->w_high[crit_bands] == BLOCK_LEN_SHORT)
break;
}
}
part_tbl_short->len = crit_bands+1;
// printf("%d %d\n",part_tbl_short->len, part_tbl_short->w_high[crit_bands]);
// Using Traunmuller formula for bark, for more info see:
// http://www.ling.su.se/staff/hartmut/bark.htm
for(b = 0; b < part_tbl_long->len; b++) {
double ji = part_tbl_long->w_low[b] + (part_tbl_long->width[b]-1)/2.0;
double freq = part_tbl_long->sampling_rate*ji/2048;
double bark = 26.81/(1+(1960/freq)) - 0.53;
dyn_long.bval[b] = bark;
}
for(b = 0; b < part_tbl_short->len ; b++) {
double ji = part_tbl_short->w_low[b] + (part_tbl_short->width[b]-1)/2.0;
double freq = part_tbl_short->sampling_rate*ji/256;
double bark = 26.81/(1+(1960/freq)) - 0.53;
dyn_short.bval[b]=bark;
}
// Calculate the spreading function
{
double tmpx,tmpy,tmp,x,b1,b2;
int b, bb;
for( b = 0; b < part_tbl_long->len; b++) {
b2 = dyn_long.bval[b];
for( bb = 0; bb < part_tbl_long->len; bb++) {
b1 = dyn_long.bval[bb];
if (b>=bb) tmpx = (b2 - b1)*3.0;
else tmpx = (b2 - b1)*1.5;
if(tmpx>=0.5 && tmpx<=2.5)
{
tmp = tmpx - 0.5;
x = 8.0 * (tmp*tmp - 2.0 * tmp);
}
else x = 0.0;
tmpx += 0.474;
tmpy = 15.811389 + 7.5*tmpx - 17.5*sqrt(1.0+tmpx*tmpx);
if (tmpy <= -60.0) dyn_long.spreading[b][bb] = 0.0;
else dyn_long.spreading[b][bb] = exp( (x + tmpy)*0.2302585093 );
}
}
for( b = 0; b < part_tbl_short->len; b++) {
b2 = dyn_short.bval[b];
for( bb = 0; bb < part_tbl_short->len; bb++) {
b1 = dyn_short.bval[bb];
if (b>=bb) tmpx = (b2 - b1)*3.0;
else tmpx = (b2 - b1)*1.5;
if(tmpx>=0.5 && tmpx<=2.5)
{
tmp = tmpx - 0.5;
x = 8.0 * (tmp*tmp - 2.0 * tmp);
}
else x = 0.0;
tmpx += 0.474;
tmpy = 15.811389 + 7.5*tmpx - 17.5*sqrt(1.0+tmpx*tmpx);
if (tmpy <= -60.0) dyn_short.spreading[b][bb] = 0.0;
else dyn_short.spreading[b][bb] = exp( (x + tmpy)*0.2302585093 );
}
}
}
for( b = 0; b < part_tbl_long->len; b++){
tmp = 0.0;
for( bb = 0; bb < part_tbl_long->len; bb++)
tmp += dyn_long.spreading[bb][b];
dyn_long.rnorm[b] = 1.0/tmp;
}
for( b = 0; b < part_tbl_short->len; b++){
tmp = 0.0;
for( bb = 0; bb < part_tbl_short->len; bb++)
tmp += dyn_short.spreading[bb][b];
dyn_short.rnorm[b] = 1.0/tmp;
}
for(b = 0; b < part_tbl_long->len; b++) {
dyn_long.bmax[b] = pow(10, 1.25*(1-cos(M_PI*b/part_tbl_long->len))-2.5);
// dyn_long.bmax[b] = pow(10, -3*(0.5+0.5*(M_PI*(min(dyn_long.bval[b], 15.5)/15.5))));
}
for(b = 0; b < part_tbl_short->len; b++) {
dyn_short.bmax[b] = pow(10, 1.25*(1-cos(M_PI*b/part_tbl_short->len))-2.5);
// dyn_short.bmax[b] = pow(10, -3*(0.5+0.5*(M_PI*(min(dyn_short.bval[b], 15.5)/15.5))));
}
part_tbl_long->dyn = &dyn_long;
part_tbl_short->dyn = &dyn_short;
}
void psy_calc_init(
double sample[][BLOCK_LEN_LONG*2],
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short
)
{
int ch = 0;
int i;
for(i = 0; i < BLOCK_LEN_LONG*2; i++){
sample[ch][i] = 0.0;
}
for(i = 0; i < BLOCK_LEN_LONG*3; i++){
psy_stvar_long->fft_r[i] = 0.0;
psy_stvar_long->fft_f[i] = 0.0;
}
psy_stvar_long->p_fft = 0;
for(i = 0; i < NPART_LONG*2; i++){
psy_stvar_long->nb[i] = 90.0;
}
psy_stvar_long->p_nb = NPART_LONG;
for(i = 0; i < BLOCK_LEN_SHORT; i++) {
psy_stvar_short->last6_fft_r[i] = 0.0;
psy_stvar_short->last6_fft_f[i] = 0.0;
psy_stvar_short->last7_fft_r[i] = 0.0;
psy_stvar_short->last7_fft_f[i] = 0.0;
}
for(i = 0; i < NPART_SHORT; i++){
psy_stvar_short->last7_nb[i] = 90.0;
}
sqrt2048 = 1/sqrt(2048);
sqrt256 = 1/sqrt(256);
}
void psy_fill_lookahead(double *p_time_signal[], int no_of_chan)
{
int i, ch;
for (ch = 0; ch < no_of_chan; ch++) {
for(i = 0; i < BLOCK_LEN_LONG; i++){
sample[ch][i+BLOCK_LEN_LONG] = p_time_signal[ch][i];
}
}
}
/* main */
void EncTf_psycho_acoustic(
/* input */
double sampling_rate,
int no_of_chan, /* no of audio channels */
Ch_Info* channelInfo,
double *p_time_signal[],
enum WINDOW_TYPE block_type[],
int use_MS,
/* output */
CH_PSYCH_OUTPUT_LONG p_chpo_long[],
CH_PSYCH_OUTPUT_SHORT p_chpo_short[][MAX_SHORT_WINDOWS]
)
{
int chanNum, i;
SR_INFO *p_sri;
static int flag = 0;
PSY_VARIABLE_LONG psy_var_long[4]; /* variables for long block */
PSY_VARIABLE_SHORT psy_var_short[4]; /* variables for short block */
memset(&psy_var_long, 0, sizeof(psy_var_long));
memset(&psy_var_short, 0, sizeof(psy_var_short));
p_sri = &sr_info_aac[0];
/* find correct sampling rate depending parameters */
while( p_sri->sampling_rate != (long)sampling_rate ) {
p_sri++;
}
if( flag==0 ) {
psy_part_table_init(sampling_rate, &part_tbl_long, &part_tbl_short);
/* initializing Table B 2.1.*.a, B 2.1.*.b in N1650 */
flag = 1;
}
for (chanNum = 0; chanNum < no_of_chan; chanNum++) {
if (channelInfo[chanNum].present) {
if ((channelInfo[chanNum].cpe) && (channelInfo[chanNum].ch_is_left)) { /* CPE */
int leftChan = chanNum;
int rightChan = channelInfo[chanNum].paired_ch;
int midChan = chanNum + MAX_TIME_CHANNELS;
int sideChan = chanNum + MAX_TIME_CHANNELS;
psy_step1(p_time_signal, sample, leftChan);
psy_step1(p_time_signal, sample, rightChan);
psy_step2(sample, &psy_stvar_long[leftChan],
&psy_stvar_short[leftChan], &fft_tbl_long, &fft_tbl_short, leftChan);
psy_step2(sample, &psy_stvar_long[rightChan],
&psy_stvar_short[rightChan], &fft_tbl_long, &fft_tbl_short, rightChan);
if (use_MS == 0)
psy_step2MS(psy_stvar_long, psy_stvar_short,
leftChan, rightChan, midChan, sideChan);
psy_step3(&psy_stvar_long[leftChan], &psy_stvar_short[leftChan],
&psy_var_long[0], &psy_var_short[0]);
psy_step3(&psy_stvar_long[rightChan], &psy_stvar_short[rightChan],
&psy_var_long[1], &psy_var_short[1]);
psy_step4(&psy_stvar_long[leftChan], &psy_stvar_short[leftChan],
&psy_var_long[0], &psy_var_short[0]);
psy_step4(&psy_stvar_long[rightChan], &psy_stvar_short[rightChan],
&psy_var_long[1], &psy_var_short[1]);
if (use_MS == 0)
psy_step4MS(psy_var_long, psy_var_short, 0, 1, 2, 3);
psy_step5(&part_tbl_long, &part_tbl_short, &psy_stvar_long[leftChan], &psy_stvar_short[leftChan],
&psy_var_long[0], &psy_var_short[0]);
psy_step5(&part_tbl_long, &part_tbl_short, &psy_stvar_long[rightChan], &psy_stvar_short[rightChan],
&psy_var_long[1], &psy_var_short[1]);
if (use_MS == 0) {
psy_step5(&part_tbl_long, &part_tbl_short, &psy_stvar_long[midChan], &psy_stvar_short[midChan],
&psy_var_long[2], &psy_var_short[2]);
psy_step5(&part_tbl_long, &part_tbl_short, &psy_stvar_long[sideChan], &psy_stvar_short[sideChan],
&psy_var_long[3], &psy_var_short[3]);
}
psy_step6(&part_tbl_long, &part_tbl_short, &psy_stvar_long[leftChan], &psy_stvar_short[leftChan],
&psy_var_long[0], &psy_var_short[0]);
psy_step6(&part_tbl_long, &part_tbl_short, &psy_stvar_long[rightChan], &psy_stvar_short[rightChan],
&psy_var_long[1], &psy_var_short[1]);
if (use_MS == 0) {
psy_step6(&part_tbl_long, &part_tbl_short, &psy_stvar_long[midChan], &psy_stvar_short[midChan],
&psy_var_long[2], &psy_var_short[2]);
psy_step6(&part_tbl_long, &part_tbl_short, &psy_stvar_long[sideChan], &psy_stvar_short[sideChan],
&psy_var_long[3], &psy_var_short[3]);
}
psy_step7(&part_tbl_long, &part_tbl_short, &psy_var_long[0], &psy_var_short[0]);
psy_step7(&part_tbl_long, &part_tbl_short, &psy_var_long[1], &psy_var_short[1]);
if (use_MS == 0) {
psy_step7MS(psy_var_long, psy_var_short, 0, 1, 2, 3);
}
psy_step8(&part_tbl_long, &part_tbl_short, &psy_var_long[0], &psy_var_short[0]);
psy_step8(&part_tbl_long, &part_tbl_short, &psy_var_long[1], &psy_var_short[1]);
if (use_MS == 0) {
psy_step8(&part_tbl_long, &part_tbl_short, &psy_var_long[2], &psy_var_short[2]);
psy_step8(&part_tbl_long, &part_tbl_short, &psy_var_long[3], &psy_var_short[3]);
}
psy_step9(&part_tbl_long, &part_tbl_short, &psy_var_long[0], &psy_var_short[0]);
psy_step9(&part_tbl_long, &part_tbl_short, &psy_var_long[1], &psy_var_short[1]);
if (use_MS == 0) {
psy_step9(&part_tbl_long, &part_tbl_short, &psy_var_long[2], &psy_var_short[2]);
psy_step9(&part_tbl_long, &part_tbl_short, &psy_var_long[3], &psy_var_short[3]);
}
psy_step10(&part_tbl_long, &part_tbl_short, &psy_stvar_long[leftChan], &psy_stvar_short[leftChan],
&psy_var_long[0], &psy_var_short[0]);
psy_step10(&part_tbl_long, &part_tbl_short, &psy_stvar_long[rightChan], &psy_stvar_short[rightChan],
&psy_var_long[1], &psy_var_short[1]);
if (use_MS == 0) {
psy_step10(&part_tbl_long, &part_tbl_short, &psy_stvar_long[midChan], &psy_stvar_short[midChan],
&psy_var_long[2], &psy_var_short[2]);
psy_step10(&part_tbl_long, &part_tbl_short, &psy_stvar_long[sideChan], &psy_stvar_short[sideChan],
&psy_var_long[3], &psy_var_short[3]);
psy_step11MS(&part_tbl_long, &part_tbl_short, psy_stvar_long, psy_stvar_short,
leftChan, rightChan, midChan, sideChan);
}
psy_step11(&part_tbl_long, &part_tbl_short, &psy_stvar_long[leftChan], &psy_stvar_short[leftChan]);
psy_step11(&part_tbl_long, &part_tbl_short, &psy_stvar_long[rightChan], &psy_stvar_short[rightChan]);
if (use_MS == 0) {
psy_step11(&part_tbl_long, &part_tbl_short, &psy_stvar_long[midChan], &psy_stvar_short[midChan]);
psy_step11(&part_tbl_long, &part_tbl_short, &psy_stvar_long[sideChan], &psy_stvar_short[sideChan]);
}
psy_step12(&part_tbl_long, &part_tbl_short, &psy_stvar_long[leftChan], &psy_stvar_short[leftChan],
&psy_var_long[0], &psy_var_short[0]);
psy_step12(&part_tbl_long, &part_tbl_short, &psy_stvar_long[rightChan], &psy_stvar_short[rightChan],
&psy_var_long[1], &psy_var_short[1]);
psy_step13(&psy_var_long[0], &block_type[leftChan]);
if (*block_type != ONLY_SHORT_WINDOW) {
psy_step13(&psy_var_long[1], &block_type[rightChan]);
block_type[leftChan] = block_type[rightChan];
} else {
block_type[rightChan] = block_type[leftChan];
}
psy_step14(p_sri, &part_tbl_long, &part_tbl_short, &psy_stvar_long[leftChan],
&psy_stvar_short[leftChan], &psy_var_long[0], &psy_var_short[0]);
psy_step14(p_sri, &part_tbl_long, &part_tbl_short, &psy_stvar_long[rightChan],
&psy_stvar_short[rightChan], &psy_var_long[1], &psy_var_short[1]);
if (use_MS == 0) {
psy_step14(p_sri, &part_tbl_long, &part_tbl_short, &psy_stvar_long[midChan],
&psy_stvar_short[midChan], &psy_var_long[2], &psy_var_short[2]);
psy_step14(p_sri, &part_tbl_long, &part_tbl_short, &psy_stvar_long[sideChan],
&psy_stvar_short[sideChan], &psy_var_long[3], &psy_var_short[3]);
psy_step15(p_sri, psy_stvar_long, psy_stvar_short,
psy_var_long, psy_var_short,
leftChan, rightChan, midChan, sideChan);
}
p_chpo_long[leftChan].p_ratio = psy_stvar_long[leftChan].ismr;
p_chpo_long[rightChan].p_ratio = psy_stvar_long[rightChan].ismr;
p_chpo_long[leftChan].cb_width = p_sri->cb_width_long;
p_chpo_long[rightChan].cb_width = p_sri->cb_width_long;
p_chpo_long[leftChan].no_of_cb = p_sri->num_cb_long;
p_chpo_long[rightChan].no_of_cb = p_sri->num_cb_long;
memcpy(p_chpo_long[rightChan].use_ms, psy_stvar_long[rightChan].use_ms, NSFB_LONG*sizeof(int));
for( i=0; i<MAX_SHORT_WINDOWS; i++ ) {
p_chpo_short[leftChan][i].p_ratio = psy_stvar_short[leftChan].ismr[i];
p_chpo_short[rightChan][i].p_ratio = psy_stvar_short[rightChan].ismr[i];
p_chpo_short[leftChan][i].cb_width = p_sri->cb_width_short;
p_chpo_short[rightChan][i].cb_width = p_sri->cb_width_short;
p_chpo_short[leftChan][i].no_of_cb = p_sri->num_cb_short;
p_chpo_short[rightChan][i].no_of_cb = p_sri->num_cb_short;
memcpy(p_chpo_short[rightChan][i].use_ms, psy_stvar_short[rightChan].use_ms[i], NSFB_SHORT*sizeof(int));
}
} else if (channelInfo[chanNum].lfe) { /* LFE */
// LFE psych ratios are set to -24 dB for low frequencies
for (i = 0; i < 10; i++) {
psy_stvar_long[chanNum].ismr[i] = 0.004; /* -24 dB */
}
for (i = 10; i < NSFB_LONG; i++) {
psy_stvar_long[chanNum].ismr[i] = 1.0;
}
p_chpo_long[chanNum].p_ratio = psy_stvar_long[chanNum].ismr;
block_type[chanNum] = ONLY_LONG_WINDOW;
// set the scalefactor band values
p_chpo_long[chanNum].cb_width = p_sri->cb_width_long;
p_chpo_long[chanNum].no_of_cb = p_sri->num_cb_long;
for( i=0; i<MAX_SHORT_WINDOWS; i++ ) {
p_chpo_short[chanNum][i].p_ratio = psy_stvar_short[chanNum].ismr[i];
p_chpo_short[chanNum][i].cb_width = p_sri->cb_width_short;
p_chpo_short[chanNum][i].no_of_cb = p_sri->num_cb_short;
}
} else { /* SCE */
psy_step1(p_time_signal, sample, chanNum);
psy_step2(sample, &psy_stvar_long[chanNum], &psy_stvar_short[chanNum],
&fft_tbl_long, &fft_tbl_short, chanNum);
psy_step3(&psy_stvar_long[chanNum], &psy_stvar_short[chanNum], &psy_var_long[0], &psy_var_short[0]);
psy_step4(&psy_stvar_long[chanNum], &psy_stvar_short[chanNum], &psy_var_long[0], &psy_var_short[0]);
psy_step5(&part_tbl_long, &part_tbl_short, &psy_stvar_long[chanNum], &psy_stvar_short[chanNum],
&psy_var_long[0], &psy_var_short[0]);
psy_step6(&part_tbl_long, &part_tbl_short, &psy_stvar_long[chanNum], &psy_stvar_short[chanNum],
&psy_var_long[0], &psy_var_short[0]);
psy_step7(&part_tbl_long, &part_tbl_short, &psy_var_long[0], &psy_var_short[0]);
psy_step8(&part_tbl_long, &part_tbl_short, &psy_var_long[0], &psy_var_short[0]);
psy_step9(&part_tbl_long, &part_tbl_short, &psy_var_long[0], &psy_var_short[0]);
psy_step10(&part_tbl_long, &part_tbl_short, &psy_stvar_long[chanNum], &psy_stvar_short[chanNum],
&psy_var_long[0], &psy_var_short[0]);
psy_step11(&part_tbl_long, &part_tbl_short, &psy_stvar_long[chanNum], &psy_stvar_short[chanNum]);
psy_step12(&part_tbl_long, &part_tbl_short, &psy_stvar_long[chanNum], &psy_stvar_short[chanNum],
&psy_var_long[0], &psy_var_short[0]);
psy_step13(&psy_var_long[0], &block_type[chanNum]);
psy_step14(p_sri, &part_tbl_long, &part_tbl_short, &psy_stvar_long[chanNum],
&psy_stvar_short[chanNum], &psy_var_long[0], &psy_var_short[0]);
p_chpo_long[chanNum].p_ratio = psy_stvar_long[chanNum].ismr;
p_chpo_long[chanNum].cb_width = p_sri->cb_width_long;
p_chpo_long[chanNum].no_of_cb = p_sri->num_cb_long;
for( i=0; i<MAX_SHORT_WINDOWS; i++ ) {
p_chpo_short[chanNum][i].p_ratio = psy_stvar_short[chanNum].ismr[i];
p_chpo_short[chanNum][i].cb_width = p_sri->cb_width_short;
p_chpo_short[chanNum][i].no_of_cb = p_sri->num_cb_short;
}
}
}
}
}
void psy_step1(double* p_time_signal[],
double sample[][BLOCK_LEN_LONG*2],
int ch)
{
int i;
for(i = 0; i < BLOCK_LEN_LONG; i++){
sample[ch][i] = sample[ch][i+BLOCK_LEN_LONG];
sample[ch][i+BLOCK_LEN_LONG] = p_time_signal[ch][i];
}
}
void psy_step2(double sample[][BLOCK_LEN_LONG*2],
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
FFT_TABLE_LONG *fft_tbl_long,
FFT_TABLE_SHORT *fft_tbl_short,
int ch
)
{
int w,l;
double data[2048],a,b;
/* FFT for long */
psy_stvar_long->p_fft += BLOCK_LEN_LONG;
if(psy_stvar_long->p_fft == BLOCK_LEN_LONG * 3)
psy_stvar_long->p_fft = 0;
/* windowing */
for(w = 0; w < BLOCK_LEN_LONG; w++){
FFTarray[w].re = fft_tbl_long->hw[(w<<1)] * sample[ch][w<<1];
FFTarray[w].im = fft_tbl_long->hw[(w<<1)+1] * sample[ch][(w<<1)+1];
}
realft2048(data);
for(w = 0; w < BLOCK_LEN_LONG; w++){
a = data[(w<<1)];
b = data[(w<<1)+1];
psy_stvar_long->fft_r[w+psy_stvar_long->p_fft] = sqrt(a*a + b*b) * sqrt2048;
}
for(w = 0; w < 16; w++){
a = data[(w<<1)];
b = data[(w<<1)+1];
if( a > 0.0 ){
if( b >= 0.0 )
psy_stvar_long->fft_f[w+psy_stvar_long->p_fft] = atan2( b, a );
else
psy_stvar_long->fft_f[w+psy_stvar_long->p_fft] = atan2( b, a )+ M_PI * 2.0;
} else if( a < 0.0 ) {
psy_stvar_long->fft_f[w+psy_stvar_long->p_fft] = atan2( b, a ) + M_PI;
} else {
if( b > 0.0 )
psy_stvar_long->fft_f[w+psy_stvar_long->p_fft] = M_PI * 0.5;
else if( b < 0.0 )
psy_stvar_long->fft_f[w+psy_stvar_long->p_fft] = M_PI * 1.5;
else
psy_stvar_long->fft_f[w+psy_stvar_long->p_fft] = 0.0;
}
}
/* FFT for short */
for(l = 0; l < MAX_SHORT_WINDOWS; l++){
/* windowing */
for(w = 0; w < BLOCK_LEN_SHORT; w++){
FFTarray[w].re = fft_tbl_short->hw[w<<1] * sample[ch][OFFSET_FOR_SHORT + (BLOCK_LEN_SHORT * l) + (w<<1)];
FFTarray[w].im = fft_tbl_short->hw[(w<<1)+1] * sample[ch][OFFSET_FOR_SHORT + (BLOCK_LEN_SHORT * l) + (w<<1)+1];
}
realft256(data);
for(w = 0; w < BLOCK_LEN_SHORT; w++){
a = data[(w<<1)];
b = data[(w<<1)+1];
psy_stvar_short->fft_r[l][w]= sqrt(a*a + b*b) * sqrt256;
if( a > 0.0 ){
if( b >= 0.0 )
psy_stvar_short->fft_f[l][w] = atan2( b, a );
else
psy_stvar_short->fft_f[l][w] = atan2( b, a )+ M_PI * 2.0;
} else if( a < 0.0 ) {
psy_stvar_short->fft_f[l][w] = atan2( b, a ) + M_PI;
} else {
if( b > 0.0 )
psy_stvar_short->fft_f[l][w] = M_PI * 0.5;
else if( b < 0.0 )
psy_stvar_short->fft_f[l][w] = M_PI * 1.5;
else
psy_stvar_short->fft_f[l][w] = 0.0;
}
}
}
}
void psy_step2MS(PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
int leftChan, int rightChan,
int midChan, int sideChan)
{
int w, l;
psy_stvar_long[midChan].p_fft += BLOCK_LEN_LONG;
if(psy_stvar_long[midChan].p_fft == BLOCK_LEN_LONG * 3)
psy_stvar_long[midChan].p_fft = 0;
psy_stvar_long[sideChan].p_fft += BLOCK_LEN_LONG;
if(psy_stvar_long[sideChan].p_fft == BLOCK_LEN_LONG * 3)
psy_stvar_long[sideChan].p_fft = 0;
for (w = 0; w < BLOCK_LEN_LONG; w++) {
psy_stvar_long[midChan].fft_r[w+psy_stvar_long[midChan].p_fft] = (psy_stvar_long[leftChan].fft_r[w+psy_stvar_long[leftChan].p_fft]+psy_stvar_long[rightChan].fft_r[w+psy_stvar_long[rightChan].p_fft])*0.5;
psy_stvar_long[sideChan].fft_r[w+psy_stvar_long[sideChan].p_fft] = (psy_stvar_long[leftChan].fft_r[w+psy_stvar_long[leftChan].p_fft]-psy_stvar_long[rightChan].fft_r[w+psy_stvar_long[rightChan].p_fft])*0.5;
}
for (l = 0; l < MAX_SHORT_WINDOWS; l++) {
for (w = 0; w < BLOCK_LEN_SHORT; w++) {
psy_stvar_short[midChan].fft_r[l][w] = (psy_stvar_short[leftChan].fft_r[l][w]+psy_stvar_short[rightChan].fft_r[l][w])*0.5;
psy_stvar_short[sideChan].fft_r[l][w] = (psy_stvar_short[leftChan].fft_r[l][w]-psy_stvar_short[rightChan].fft_r[l][w])*0.5;
}
}
}
void psy_step3(PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short
)
{
int w,i;
int p1_l,p2_l;
p1_l = psy_stvar_long->p_fft - BLOCK_LEN_LONG;
if( p1_l < 0 )
p1_l = BLOCK_LEN_LONG * 2;
p2_l = p1_l - BLOCK_LEN_LONG;
if( p2_l < 0 )
p2_l = BLOCK_LEN_LONG;
for(w = 0; w < 16; w++){
psy_var_long->r_pred[w] = 2.0 * psy_stvar_long->fft_r[p1_l + w] - psy_stvar_long->fft_r[p2_l + w];
psy_var_long->f_pred[w] = 2.0 * psy_stvar_long->fft_f[p1_l + w] - psy_stvar_long->fft_f[p2_l + w];
}
for(w = 0; w < BLOCK_LEN_SHORT; w++){
psy_var_short->r_pred[0][w] = 2.0 * psy_stvar_short->last7_fft_r[w] - psy_stvar_short->last6_fft_r[w];
psy_var_short->f_pred[0][w] = 2.0 * psy_stvar_short->last7_fft_f[w] - psy_stvar_short->last6_fft_f[w];
psy_var_short->r_pred[1][w] = 2.0 * psy_stvar_short->fft_r[0][w] - psy_stvar_short->last7_fft_r[w];
psy_var_short->f_pred[1][w] = 2.0 * psy_stvar_short->fft_f[0][w] - psy_stvar_short->last7_fft_f[w];
}
for(i = 2; i < MAX_SHORT_WINDOWS; i++){
for(w = 0; w < BLOCK_LEN_SHORT; w++){
psy_var_short->r_pred[i][w] = 2.0 * psy_stvar_short->fft_r[i - 1][w] - psy_stvar_short->fft_r[i - 2][w];
psy_var_short->f_pred[i][w] = 2.0 * psy_stvar_short->fft_f[i - 1][w] - psy_stvar_short->fft_f[i - 2][w];
}
}
for(w = 0; w < BLOCK_LEN_SHORT; w++){
psy_stvar_short->last6_fft_r[w] = psy_stvar_short->fft_r[6][w];
psy_stvar_short->last6_fft_f[w] = psy_stvar_short->fft_f[6][w];
psy_stvar_short->last7_fft_r[w] = psy_stvar_short->fft_r[7][w];
psy_stvar_short->last7_fft_f[w] = psy_stvar_short->fft_f[7][w];
}
}
void psy_step4(PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short
)
{
int w,i;
double r,f,rp,fp;
for(i = 0; i < MAX_SHORT_WINDOWS; i++){
for(w = 0; w < BLOCK_LEN_SHORT; w++){
r = psy_stvar_short->fft_r[i][w];
f = psy_stvar_short->fft_f[i][w];
rp = psy_var_short->r_pred[i][w];
fp = psy_var_short->f_pred[i][w];
if( fabs(r) + fabs(rp) != 0.0 )
/* Replacing with something faster
psy_var_short->c[i][w] = sqrt( psy_sqr(r*cos(f) - rp*cos(fp))
+psy_sqr(r*sin(f) - rp*sin(fp)) )/ ( r + fabs(rp) ) ;
*/
psy_var_short->c[i][w] = sqrt( r*r+rp*rp-2*r*rp*cos(f+fp) )/ ( r + fabs(rp) );
else
psy_var_short->c[i][w] = 0.0; /* tmp */
}
}
for(w = 0; w < 16; w++){
r = psy_stvar_long->fft_r[psy_stvar_long->p_fft+w];
f = psy_stvar_long->fft_f[psy_stvar_long->p_fft+w];
rp = psy_var_long->r_pred[w];
fp = psy_var_long->f_pred[w];
if( fabs(r) + fabs(rp) != 0.0 )
/* Replacing with something faster
psy_var_long->c[w] = sqrt( psy_sqr(r*cos(f) - rp*cos(fp))
+psy_sqr(r*sin(f) - rp*sin(fp)) )/ ( r + fabs(rp) );
*/
psy_var_long->c[w] = sqrt( r*r+rp*rp-2*r*rp*cos(f+fp) )/ ( r + fabs(rp) );
else
psy_var_long->c[w] = 0.0; /* tmp */
}
for(w = 16; w < 416; w+=8) {
double temp_c = 0.0;
for(i = 0; i < MAX_SHORT_WINDOWS; i++) {
temp_c += psy_var_short->c[i][w/8];
}
temp_c = temp_c/8.0;
for(i = 0; i < MAX_SHORT_WINDOWS; i++) {
psy_var_long->c[w+i] = temp_c;
}
}
for(w = 416; w < BLOCK_LEN_LONG; w++){
psy_var_long->c[w] = 0.4;
}
}
void psy_step4MS(PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short,
int leftChan, int rightChan,
int midChan, int sideChan)
{
int b, i;
for (b = 0; b < NPART_LONG; b++)
psy_var_long[midChan].c[b] = psy_var_long[sideChan].c[b] = min(psy_var_long[leftChan].c[b], psy_var_long[rightChan].c[b]);
for (i = 0; i < MAX_SHORT_WINDOWS; i++)
for (b = 0; b < NPART_SHORT; b++)
psy_var_short[midChan].c[i][b] = psy_var_short[sideChan].c[i][b] = min(psy_var_short[leftChan].c[i][b], psy_var_short[rightChan].c[i][b]);
}
void psy_step5(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short
)
{
int b,w,i;
double tmp_cb;
for(b = 0; b < part_tbl_long->len; b++){
psy_var_long->e[b] = 0.0;
tmp_cb = 0.0;
for(w = part_tbl_long->w_low[b]; w < part_tbl_long->w_high[b]; w++){
psy_var_long->e[b] += psy_sqr(psy_stvar_long->fft_r[psy_stvar_long->p_fft+w]);
tmp_cb += psy_sqr(psy_stvar_long->fft_r[psy_stvar_long->p_fft+w]) * psy_var_long->c[w];
}
psy_var_long->cb[b] = tmp_cb;
}
for(i = 0; i < MAX_SHORT_WINDOWS; i++){
for(b = 0; b < part_tbl_short->len; b++){
psy_var_short->e[i][b] = 0.0;
tmp_cb = 0.0;
for(w = part_tbl_short->w_low[b]; w < part_tbl_short->w_high[b]; w++){
psy_var_short->e[i][b] += psy_sqr(psy_stvar_short->fft_r[i][w]);
tmp_cb += psy_sqr(psy_stvar_short->fft_r[i][w]) * psy_var_short->c[i][w];
}
psy_var_short->cb[i][b] = tmp_cb;
}
}
}
void psy_step6(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short
)
{
int b,bb,i;
double ecb,ct;
double sprd;
for(b = 0; b < part_tbl_long->len; b++){
ecb = 0.0;
ct = 0.0;
for(bb = 0; bb < part_tbl_long->len; bb++){
sprd = part_tbl_long->dyn->spreading[bb][b];
ecb += psy_var_long->e[bb] * sprd;
ct += psy_var_long->cb[bb] * sprd;
}
if (ecb!=0.0) {
psy_var_long->cbb[b] = ct / ecb;
psy_stvar_long->en[b] = psy_var_long->en[b] = ecb
* part_tbl_long->dyn->rnorm[b];
} else {
psy_var_long->cbb[b] = 0.0;
psy_stvar_long->en[b] = psy_var_long->en[b] = 0;
}
}
for(i = 0; i < MAX_SHORT_WINDOWS; i++){
for(b = 0; b < part_tbl_short->len; b++){
ecb = 0.0;
ct = 0.0;
for(bb = 0; bb < part_tbl_short->len; bb++){
sprd = part_tbl_short->dyn->spreading[bb][b];
ecb += psy_var_short->e[i][bb] * sprd;
ct += psy_var_short->cb[i][bb] * sprd;
}
if (ecb!=0.0) {
psy_var_short->cbb[i][b] = ct / ecb;
psy_stvar_short->en[i][b] = psy_var_short->en[i][b] = ecb
* part_tbl_short->dyn->rnorm[b];
} else {
psy_var_short->cbb[i][b] = 0.0;
psy_stvar_short->en[i][b] = psy_var_short->en[i][b] = 0;
}
}
}
}
void psy_step7(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short)
{
int b,i;
for(b = 0; b < part_tbl_long->len; b++){
if (psy_var_long->cbb[b] > 0.0) {
psy_var_long->tb[b] = -0.299 - 0.43 * log(psy_var_long->cbb[b]);
} else {
psy_var_long->tb[b] = 1.0;
}
if( psy_var_long->tb[b] > 1.0 )
psy_var_long->tb[b] = 1.0;
else if( psy_var_long->tb[b] < 0.0 )
psy_var_long->tb[b] = 0.0;
// if ((psy_var_long->tb[b]<1.0)&&(psy_var_long->tb[b]>0.5))
// printf("%d\t%.2f\n", b, psy_var_long->tb[b]);
}
for(i = 0; i < MAX_SHORT_WINDOWS; i++){
for(b = 0; b < part_tbl_short->len; b++){
if (psy_var_short->cbb[i][b]>0.0) {
psy_var_short->tb[i][b] = -0.299 - 0.43 * log(psy_var_short->cbb[i][b]);
} else {
psy_var_short->tb[i][b] = 1.0;
}
if( psy_var_short->tb[i][b] > 1.0 )
psy_var_short->tb[i][b] = 1.0;
else if( psy_var_short->tb[i][b] < 0.0 )
psy_var_short->tb[i][b] = 0.0;
// if ((psy_var_short->tb[i][b]<1.0)&&(psy_var_short->tb[i][b]>0.5))
// printf("%d\t%.2f\n", b, psy_var_short->tb[i][b]);
}
}
}
void psy_step7MS(PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short,
int leftChan, int rightChan,
int midChan, int sideChan)
{
int b, i;
for (b = 0; b < NPART_LONG; b++) {
psy_var_long[midChan].tb[b] = psy_var_long[leftChan].tb[b];
psy_var_long[sideChan].tb[b] = psy_var_long[rightChan].tb[b];
}
for (i = 0; i < MAX_SHORT_WINDOWS; i++)
for (b = 0; b < NPART_SHORT; b++) {
psy_var_short[midChan].tb[i][b] = psy_var_short[leftChan].tb[i][b];
psy_var_short[sideChan].tb[i][b] = psy_var_short[rightChan].tb[i][b];
}
}
void psy_step8(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short)
{
int b,i;
double tmn = 18.0, nmt = 6.0;
for(b = 0; b < part_tbl_long->len; b++) {
psy_var_long->snr[b] = psy_var_long->tb[b] * tmn + (1.0 - psy_var_long->tb[b] ) * nmt;
}
for(i = 0; i < MAX_SHORT_WINDOWS; i++){
for(b = 0; b < part_tbl_short->len; b++)
psy_var_short->snr[i][b] = psy_var_short->tb[i][b] * tmn + (1.0 - psy_var_short->tb[i][b] ) * nmt ;
}
}
void psy_step9(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short
)
{
int b,i;
for(b = 0; b < part_tbl_long->len; b++)
psy_var_long->bc[b] = pow(10.0, -psy_var_long->snr[b]/10.0);
for(i = 0; i < MAX_SHORT_WINDOWS; i++){
for(b = 0; b < part_tbl_short->len; b++)
psy_var_short->bc[i][b] = pow(10.0, -psy_var_short->snr[i][b]/10.0);
}
}
void psy_step10(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short
)
{
int b,i;
psy_stvar_long->p_nb += NPART_LONG;
if( psy_stvar_long->p_nb == NPART_LONG*2 ) psy_stvar_long->p_nb = 0;
for(b = 0; b < part_tbl_long->len; b++){
psy_stvar_long->nb[psy_stvar_long->p_nb + b]
= psy_var_long->en[b] * psy_var_long->bc[b];
}
for(i = 0; i < MAX_SHORT_WINDOWS; i++){
for(b = 0; b < part_tbl_short->len; b++){
psy_stvar_short->nb[i][b]
= psy_var_short->en[i][b] * psy_var_short->bc[i][b];
}
}
}
void psy_step11(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short
)
{
int b,i;
int p1,p2;
double temp;
p1 = psy_stvar_long->p_nb;
if( p1 == 0 ) p2 = NPART_LONG;
else if( p1 == NPART_LONG ) p2 = 0;
for(b = 0; b < part_tbl_long->len; b++) {
temp = min( psy_stvar_long->nb[p1+b], 2.0*psy_stvar_long->nb[p2+b]);
if (temp > 0.01)
psy_stvar_long->nb[p1+b] = temp;
}
for(b = 0; b < part_tbl_short->len; b++){
temp = min( psy_stvar_short->nb[0][b], 1.0*psy_stvar_short->last7_nb[b]);
if (temp > 0.01)
psy_stvar_short->nb[0][b] = temp;
}
for(b = 0; b < part_tbl_short->len; b++){
psy_stvar_short->last7_nb[b] = psy_stvar_short->nb[7][b];
}
for(i = 1; i < MAX_SHORT_WINDOWS; i++){
for(b = 0; b < part_tbl_short->len; b++){
temp = min( psy_stvar_short->nb[i][b], 1.0*psy_stvar_short->nb[i - 1][b]);
if (temp > 0.01)
psy_stvar_short->nb[i][b] = temp;
}
}
}
void psy_step11MS(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
int leftChan, int rightChan,
int midChan, int sideChan)
{
#if 1 // LAME's version
int b, i, p1;
double tempM, tempS;
p1 = psy_stvar_long[leftChan].p_nb;
for(b = 0; b < part_tbl_long->len; b++) {
tempM = max(psy_stvar_long[midChan].nb[p1+b], min(part_tbl_long->dyn->bmax[b]*psy_stvar_long[sideChan].en[b], psy_stvar_long[sideChan].nb[p1+b]));
tempS = max(psy_stvar_long[sideChan].nb[p1+b], min(part_tbl_long->dyn->bmax[b]*psy_stvar_long[midChan].en[b], psy_stvar_long[midChan].nb[p1+b]));
if ((psy_stvar_long[leftChan].nb[p1+b] <= 1.58*psy_stvar_long[rightChan].nb[p1+b])&&(psy_stvar_long[rightChan].nb[p1+b] <= 1.58*psy_stvar_long[leftChan].nb[p1+b])) {
psy_stvar_long[midChan].nb[p1+b] = tempM;
psy_stvar_long[sideChan].nb[p1+b] = tempS;
}
}
for (i = 0; i < MAX_SHORT_WINDOWS; i++) {
for(b = 0; b < part_tbl_short->len; b++) {
tempM = max(psy_stvar_short[midChan].nb[i][b], min(part_tbl_short->dyn->bmax[b]*psy_stvar_short[sideChan].en[i][b], psy_stvar_short[sideChan].nb[i][b]));
tempS = max(psy_stvar_short[sideChan].nb[i][b], min(part_tbl_short->dyn->bmax[b]*psy_stvar_short[midChan].en[i][b], psy_stvar_short[midChan].nb[i][b]));
if ((psy_stvar_short[leftChan].nb[i][b] <= 1.58*psy_stvar_short[rightChan].nb[i][b])&&(psy_stvar_short[rightChan].nb[i][b] <= 1.58*psy_stvar_short[leftChan].nb[i][b])) {
psy_stvar_short[midChan].nb[i][b] = tempM;
psy_stvar_short[sideChan].nb[i][b] = tempS;
}
}
}
#else
int b, i,p1;
double t;
double tempL, tempR, tempM, tempS;
p1 = psy_stvar_long[leftChan].p_nb;
for(b = 0; b < part_tbl_long->len; b++) {
if (psy_stvar_long[sideChan].nb[p1+b] != 0.0)
t = psy_stvar_long[midChan].nb[p1+b]/psy_stvar_long[sideChan].nb[p1+b];
else
t = 0;
if (t>1)
t = 1/t;
tempL = max(psy_stvar_long[leftChan].nb[p1+b]*t, min(psy_stvar_long[leftChan].nb[p1+b], part_tbl_long->dyn->bmax[b]*psy_stvar_long[leftChan].en[b]));
tempR = max(psy_stvar_long[rightChan].nb[p1+b]*t, min(psy_stvar_long[rightChan].nb[p1+b], part_tbl_long->dyn->bmax[b]*psy_stvar_long[rightChan].en[b]));
t = min(tempL,tempR);
tempM = min(t, max(psy_stvar_long[midChan].nb[p1+b], min(part_tbl_long->dyn->bmax[b]*psy_stvar_long[sideChan].en[b], psy_stvar_long[sideChan].nb[p1+b])));
tempS = min(t, max(psy_stvar_long[sideChan].nb[p1+b], min(part_tbl_long->dyn->bmax[b]*psy_stvar_long[midChan].en[b], psy_stvar_long[midChan].nb[p1+b])));
if ((psy_stvar_long[leftChan].nb[p1+b] >= 1.58*psy_stvar_long[rightChan].nb[p1+b])&&(psy_stvar_long[rightChan].nb[p1+b] >= 1.58*psy_stvar_long[leftChan].nb[p1+b])) {
psy_stvar_long[midChan].nb[p1+b] = tempM;
psy_stvar_long[sideChan].nb[p1+b] = tempS;
psy_stvar_long[leftChan].nb[p1+b] = tempL;
psy_stvar_long[rightChan].nb[p1+b] = tempR;
}
}
for (i = 0; i < MAX_SHORT_WINDOWS; i++) {
for(b = 0; b < part_tbl_short->len; b++) {
if (psy_stvar_short[sideChan].nb[i][b] != 0.0)
t = psy_stvar_short[midChan].nb[i][b]/psy_stvar_short[sideChan].nb[i][b];
else
t = 0;
if (t>1)
t = 1/t;
tempL = max(psy_stvar_short[leftChan].nb[i][b]*t, min(psy_stvar_short[leftChan].nb[i][b], part_tbl_short->dyn->bmax[b]*psy_stvar_short[leftChan].en[i][b]));
tempR = max(psy_stvar_short[rightChan].nb[i][b]*t, min(psy_stvar_short[rightChan].nb[i][b], part_tbl_short->dyn->bmax[b]*psy_stvar_short[rightChan].en[i][b]));
t = min(tempL,tempR);
tempM = min(t, max(psy_stvar_short[midChan].nb[i][b], min(part_tbl_short->dyn->bmax[b]*psy_stvar_short[sideChan].en[i][b], psy_stvar_short[sideChan].nb[i][b])));
tempS = min(t, max(psy_stvar_short[sideChan].nb[i][b], min(part_tbl_short->dyn->bmax[b]*psy_stvar_short[midChan].en[i][b], psy_stvar_short[midChan].nb[i][b])));
if ((psy_stvar_short[leftChan].nb[i][b] >= 1.58*psy_stvar_short[rightChan].nb[i][b])&&(psy_stvar_short[rightChan].nb[i][b] >= 1.58*psy_stvar_short[leftChan].nb[i][b])) {
psy_stvar_short[midChan].nb[i][b] = tempM;
psy_stvar_short[sideChan].nb[i][b] = tempS;
psy_stvar_short[leftChan].nb[i][b] = tempL;
psy_stvar_short[rightChan].nb[i][b] = tempR;
}
}
}
#endif
}
void psy_step12(PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short
)
{
int b,i,shb;
double temp;
double tot, mx, estot[8];
psy_var_long->pe = 0.0;
for(b = 0; b < part_tbl_long->len; b++){
temp = part_tbl_long->width[b]
* log((psy_stvar_long->nb[psy_stvar_long->p_nb + b] + 0.0000000001)
/ (psy_var_long->e[b] + 0.0000000001));
temp = min(0,temp);
psy_var_long->pe -= temp;
}
for (i=0; i < MAX_SHORT_WINDOWS; i++) {
estot[i]=0;
for ( b = 0; b < NPART_SHORT; b++)
estot[i] += psy_var_short->e[i][b];
if (estot[i] != 0.0)
estot[i] /= NPART_SHORT;
}
tot = mx = estot[0];
for (i=1; i < MAX_SHORT_WINDOWS; i++) {
tot += estot[i];
mx = max(mx, estot[i]);
}
shb = 0;
if (psy_var_long->pe > 5600) shb = 1;
if ((mx/tot) > 0.3) shb = 1;
if (shb) psy_var_long->pe = 1;
else psy_var_long->pe = 0;
}
void psy_step13(PSY_VARIABLE_LONG *psy_var_long,
enum WINDOW_TYPE *block_type
)
{
if(psy_var_long->pe == 1) {
*block_type = ONLY_SHORT_WINDOW;
} else {
*block_type = ONLY_LONG_WINDOW;
}
}
void psy_step14(SR_INFO *p_sri,
PARTITION_TABLE_LONG *part_tbl_long,
PARTITION_TABLE_SHORT *part_tbl_short,
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
PSY_VARIABLE_LONG *psy_var_long,
PSY_VARIABLE_SHORT *psy_var_short
)
{
int b, n, w, i;
int w_low, w_high;
double thr, minthr;
w_high = 0;
for(n = 0; n < p_sri->num_cb_long; n++){
w_low = w_high;
w_high += p_sri->cb_width_long[n];
psy_var_long->epart[n] = 0.0;
for(w = w_low; w < w_high; w++){
psy_var_long->epart[n] += psy_sqr(psy_stvar_long->fft_r[psy_stvar_long->p_fft + w]);
}
}
for(b = 0; b < part_tbl_long->len; b++){
thr = psy_stvar_long->nb[psy_stvar_long->p_nb + b]
/ part_tbl_long->width[b];
for(w = part_tbl_long->w_low[b]; w < part_tbl_long->w_high[b]; w++){
psy_var_long->thr[w] = thr;
}
}
w_high = 0;
for(n = 0; n < p_sri->num_cb_long; n++){
w_low = w_high;
w_high += p_sri->cb_width_long[n];
minthr = psy_var_long->thr[w_low];
for(w = w_low+1; w < w_high; w++){
if(psy_var_long->thr[w] < minthr){
minthr = psy_var_long->thr[w];
}
}
psy_var_long->npart[n] = minthr * (w_high - w_low);
}
for(n = 0; n < p_sri->num_cb_long; n++){
if (psy_var_long->epart[n]!=0.0) {
psy_stvar_long->ismr[n] = psy_var_long->npart[n] / psy_var_long->epart[n];
} else {
psy_stvar_long->ismr[n] = 0.0;
}
}
for(i = 0; i < MAX_SHORT_WINDOWS; i++){
w_high = 0;
for(n = 0; n < p_sri->num_cb_short; n++){
w_low = w_high;
w_high += p_sri->cb_width_short[n];
psy_var_short->epart[i][n] = 0.0;
for(w = w_low; w < w_high; w++){
psy_var_short->epart[i][n] += psy_sqr(psy_stvar_short->fft_r[i][w]);
}
}
for(b = 0; b < part_tbl_short->len; b++){
thr = psy_stvar_short->nb[i][b] / part_tbl_short->width[b];
for(w = part_tbl_short->w_low[b]; w < part_tbl_short->w_high[b]; w++){
psy_var_short->thr[i][w] = thr;
}
}
w_high = 0;
for(n = 0; n < p_sri->num_cb_short; n++){
w_low = w_high;
w_high += p_sri->cb_width_short[n];
minthr = psy_var_short->thr[i][w_low];
for(w = w_low + 1; w < w_high; w++){
if(psy_var_short->thr[i][w] < minthr){
minthr = psy_var_short->thr[i][w];
}
}
psy_var_short->npart[i][n] = minthr * (w_high - w_low);
}
for(n = 0; n < p_sri->num_cb_short; n++){
if (psy_var_short->epart[i][n]!=0.0) {
psy_stvar_short->ismr[i][n] = psy_var_short->npart[i][n] / psy_var_short->epart[i][n];
} else {
psy_stvar_short->ismr[i][n] = 0.0;
}
}
}
}
void psy_step15(SR_INFO *p_sri,
PSY_STATVARIABLE_LONG *psy_stvar_long,
PSY_STATVARIABLE_SHORT *psy_stvar_short,
PSY_VARIABLE_LONG *psy_var_long, PSY_VARIABLE_SHORT *psy_var_short,
int leftChan, int rightChan, int midChan, int sideChan
)
{
int b, i;
double temp, x1, x2, db;
for (b = 0; b < p_sri->num_cb_long; b++) {
x1 = min(psy_var_long[0].npart[b],psy_var_long[1].npart[b]);
x2 = max(psy_var_long[0].npart[b],psy_var_long[1].npart[b]);
if (x2 >= 1000*x1)
db=30;
else
db = 10*log10(x2/x1);
temp = 0.35*(db)/5.0;
// printf("%d\t%f\n", b, temp);
if (temp < 0.35) {
psy_stvar_long[rightChan].use_ms[b] = 1;
psy_stvar_long[leftChan].ismr[b] = psy_stvar_long[midChan].ismr[b];
psy_stvar_long[rightChan].ismr[b] = psy_stvar_long[sideChan].ismr[b];
} else {
psy_stvar_long[rightChan].use_ms[b] = 0;
}
}
for (i = 0; i < 8; i++) {
for (b = 0; b < p_sri->num_cb_short; b++) {
x1 = min(psy_var_short[0].npart[i][b],psy_var_short[1].npart[i][b]);
x2 = max(psy_var_short[0].npart[i][b],psy_var_short[1].npart[i][b]);
if (x2 >= 1000*x1)
db=30;
else
db = 10*log10(x2/x1);
temp = 0.35*(db)/5.0;
// printf("%d\t%f\n", b, temp);
if (temp < 0.35) {
psy_stvar_short[rightChan].use_ms[i][b] = 1;
psy_stvar_short[leftChan].ismr[i][b] = psy_stvar_short[midChan].ismr[i][b];
psy_stvar_short[rightChan].ismr[i][b] = psy_stvar_short[sideChan].ismr[i][b];
} else {
psy_stvar_short[rightChan].use_ms[i][b] = 0;
}
}
}
}