residu.asm

TI C54写的G729代码,视线8kbps高质量语音编码,汇编优化

;==========================================================================
;  File Name
;  ----------
;  RESIDU.ASM
;
;  Brief Description of the Code:
;  ------------------------------
;  Compute the LPC residual  by filtering the input speech through A(z).
;
;  Ref
;  ------
;  FILTER.C (Residu)
;==========================================================================
        .mmregs
        .include  ../include/const.h
        .include  ../include/tab_ld8a.h
        .include  ../include/ld8amem.h

        .text
        .def      Residu
        .def      Residu2

;-----------------------------------------------------------------------
;  Residu
;-----------------------------------------------------------------------
;  void Residu(
;    Word16 a[],    /* (i) Q12 : prediction coefficients                     */
;    Word16 x[],    /* (i)     : speech (values x[-m..-1] are needed         */
;    Word16 y[],    /* (o)     : residual signal                             */
;    Word16 lg      /* (i)     : size of filtering                           */
;  )
;-----------------------------------------------------------------------
;  y(n)  = x(n) +