view libtwamr/weight_a.h @ 458:e26b974f7ba3

doc/AMR-study-utils: update for the current situation
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 10 May 2024 18:45:36 +0000
parents 8c7d5eec544c
children
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/*
********************************************************************************
*
*      GSM AMR-NB speech codec   R98   Version 7.6.0   December 12, 2001
*                                R99   Version 3.3.0                
*                                REL-4 Version 4.1.0                
*
********************************************************************************
*
*      File             : weight_a.h
*      Purpose          : Spectral expansion of LP coefficients.  (order==10)
*      Description      : a_exp[i] = a[i] * fac[i-1]    ,i=1,10
*
*
********************************************************************************
*/
#ifndef weight_a_h
#define weight_a_h "$Id $"
 
/*
********************************************************************************
*                         INCLUDE FILES
********************************************************************************
*/
#include "typedef.h"
 
/*
********************************************************************************
*                         DEFINITION OF DATA TYPES
********************************************************************************
*/
 
/*
********************************************************************************
*                         DECLARATION OF PROTOTYPES
********************************************************************************
*/
 
void Weight_Ai (
    Word16 a[],        /* (i)  : a[m+1]  LPC coefficients   (m=10)          */
    const Word16 fac[],/* (i)  : Spectral expansion factors.                */
    Word16 a_exp[]     /* (o)  : Spectral expanded LPC coefficients         */
);
 
#endif