C语言实现PCM-A律编码、解码

C语言实现PCM-A律编码、解码

1、C语言实现pcmA律编码includestdio.h#includemath.hvoidmain{intaijm=ln;intb

[8]={0};intc

[8]={3264128256512102420484096;printf〃请输入幅度〃；scanfa;ifa0{b

[0]=0;a=absa;elseb

[0]=l;fori=0;i7;i++{ifac[i]break;switchicase0:b[l]=0;b

[2]=0;b

[3]=0;break;case1:b[l]=0;b

[2]=0;b

[3]=l;break;case2:b[l]=0;b

[2]=l;b

[3]=0;break;case3:b[l]=0;b

[2]=l;b

[3]=l;break;case4:b[l]=l;b

[2]=0;b

[3]=0;brcak;case5:b[l]=l;b

[2]=0;b

[3]=l;break;case6:b[l]=l;b

[2]=l;b

[3]=0;break;case7:b[l]=l;b

[2]=l;b

[3]=l;break;ifi==O{n=0;m=2;}elsen=c[i-l];forj=0;ji;j++m=2*m;a=a-n/in;b

[4]=a/8;b[5J=a-b

[4]*8/4;b

[6]=a-b

[4]*8-b

[5]*4/2;b

[7]=a-b

[4]*8-b

[5]*4-b

[6]*2;fori=0;i8;i++printf〃版1b[i];while1;

2、C语言实现pcm_A律解码#includestdio.h#includemath.hvoidmainO{intijmn=32ky;inta

[8]={0};fori=0;i8;i++{prinlf请输入PCM编码a[%d]:〃，i;scanf〃机Ta[i];m=a

[1]*4+a

[2]*2+a

[3];i=m:ifm-0n=0;elsewhile--in=n*2;k=a

[4]*8+a

[5]*4+a

[6]*2+a

[7];ifm=ly=n+k*2+l;elsey=n+k*n/16+n/32;ifa

[0]==0y=-y;printf〃输入编码的幅度为:%d\n〃y;whi1e1;、roriN・i111电脑pcK^gsS«iqi.Rg11。