psymodel.h

音频编码

/*
 *	psymodel.h
 *
 *	Copyright (c) 1999 Mark Taylor
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef LAME_PSYMODEL_H
#define LAME_PSYMODEL_H

#include "l3side.h"

int L3psycho_anal( lame_global_flags *gfc,
                    const sample_t *buffer[2], int gr, 
		    FLOAT *ms_ratio, 
		    FLOAT *ms_ratio_next, 
		    III_psy_ratio ratio[2][2],
		    III_psy_ratio MS_ratio[2][2],
		   FLOAT pe[2], FLOAT pe_MS[2], FLOAT ener[2],
                    int blocktype_d[2]); 

int L3psycho_anal_ns( lame_global_flags *gfc,
		      const sample_t *buffer[2], int gr, 
		      FLOAT *ms_ratio, 
		      FLOAT *ms_ratio_next, 
		      III_psy_ratio ratio[2][2],
		      III_psy_ratio MS_ratio[2][2],
		      FLOAT pe[2], FLOAT pe_MS[2], FLOAT ener[2],
		      int blocktype_d[2]); 


int psymodel_init(lame_global_flags *gfp);


#define rpelev 2
#define rpelev2 16
#define rpelev_s 2
#define rpelev2_s 16

/* size of each partition band, in barks: */
#define DELBARK .34
#define CW_LOWER_INDEX 6


#if 1
    /* AAC values, results in more masking over MP3 values */
# define TMN 18
# define NMT 6
#else
    /* MP3 values */
# define TMN 29
# define NMT 6
#endif

/* ISO values */
#define CONV1 (-.299)
#define CONV2 (-.43)

/* tuned for output level (sensitive to energy scale) */
#define VO_SCALE (1./( 14752*14752 )/(BLKSIZE/2))

#define temporalmask_sustain_sec 0.01

#define NS_PREECHO_ATT0 0.8
#define NS_PREECHO_ATT1 0.6
#define NS_PREECHO_ATT2 0.3

#define NS_MSFIX 3.5
#define NSATTACKTHRE 4.4
#define NSATTACKTHRE_S 25

#endif /* LAME_PSYMODEL_H */