16 #include "iLBC_define.h"
17 #include "constants.h"
39 float syntOutBuf[LPC_FILTERORDER+STATE_SHORT_LEN_30MS];
46 memset(syntOutBuf, 0, LPC_FILTERORDER*
sizeof(
float));
55 syntOut = &syntOutBuf[LPC_FILTERORDER];
60 AllPoleFilter (in, weightDenum, SUBL, LPC_FILTERORDER);
62 AllPoleFilter (in, weightDenum,
63 iLBCenc_inst->state_short_len-SUBL,
69 for (n=0; n<len; n++) {
73 if ((state_first)&&(n==SUBL)){
74 syntDenum += (LPC_FILTERORDER+1);
75 weightDenum += (LPC_FILTERORDER+1);
78 AllPoleFilter (&in[n], weightDenum, len-n,
81 }
else if ((state_first==0)&&
82 (n==(iLBCenc_inst->state_short_len-SUBL))) {
83 syntDenum += (LPC_FILTERORDER+1);
84 weightDenum += (LPC_FILTERORDER+1);
87 AllPoleFilter (&in[n], weightDenum, len-n,
95 AllPoleFilter (&syntOut[n], weightDenum, 1,
100 toQ = in[n]-syntOut[n];
106 sort_sq(&xq, &index, toQ, state_sq3Tbl, 8);
108 syntOut[n] = state_sq3Tbl[out[n]];
112 AllPoleFilter(&syntOut[n], weightDenum, 1,
135 float tmpbuf[LPC_FILTERORDER+2*STATE_SHORT_LEN_30MS];
136 float *tmp, numerator[1+LPC_FILTERORDER];
137 float foutbuf[LPC_FILTERORDER+2*STATE_SHORT_LEN_30MS], *fout;
143 memset(tmpbuf, 0, LPC_FILTERORDER*
sizeof(
float));
144 memset(foutbuf, 0, LPC_FILTERORDER*
sizeof(
float));
145 for (k=0; k<LPC_FILTERORDER; k++) {
146 numerator[k]=syntDenum[LPC_FILTERORDER-k];
148 numerator[LPC_FILTERORDER]=syntDenum[0];
149 tmp = &tmpbuf[LPC_FILTERORDER];
150 fout = &foutbuf[LPC_FILTERORDER];
159 memcpy(tmp, residual, len*
sizeof(
float));
160 memset(tmp+len, 0, len*
sizeof(
float));
161 ZeroPoleFilter(tmp, numerator, syntDenum, 2*len,
162 LPC_FILTERORDER, fout);
163 for (k=0; k<len; k++) {
164 fout[k] += fout[k+len];
170 for (k=1; k<len; k++) {
172 if (fout[k]*fout[k] > maxVal*maxVal){
176 maxVal=(float)fabs(maxVal);
183 maxVal = (float)log10(maxVal);
184 sort_sq(&dtmp, idxForMax, maxVal, state_frgqTbl, 64);
189 maxVal=state_frgqTbl[*idxForMax];
190 qmax = (float)pow(10,maxVal);
191 scal = (float)(4.5)/qmax;
192 for (k=0; k<len; k++){
198 AbsQuantW(iLBCenc_inst, fout,syntDenum,
199 weightDenum,idxVec, len, state_first);