Cross Reference: /external/webrtc/src/modules/audio_coding/codecs/isac/main/source/pitch

Lines Matching defs:peak
142   int ind1, ind2, peaks_ind, peak, max_ind;
162   peak = 0;
281   /* threshold value to qualify as a peak */
294             /* found a peak; store index into matrix */
310             /* found a peak; store index into matrix */
320     /* examine each peak */
323       peak = peaks[k];
325       /* compute four interpolated values around current peak */
326       IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)], &intrp_a);
327       IntrepolFilter(&CorrSurfPtr1[peak - 1            ], &intrp_b);
328       IntrepolFilter(&CorrSurfPtr1[peak                ], &intrp_c);
329       IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)], &intrp_d);
332       corr = CorrSurfPtr1[peak];
338       /* determine where the peak sits and fill a 3x3 matrix around it */
339       row = peak / (PITCH_LAG_SPAN2+4);
340       lags1[k] = (double) ((peak - row * (PITCH_LAG_SPAN2+4)) + PITCH_MIN_LAG/2 - 4);
343         T[0][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)];
344         T[2][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)];
346         T[0][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)];
347         T[2][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)];
356           IntrepolFilter(&CorrSurfPtr1[peak - 2*(PITCH_LAG_SPAN2+5)], &T[0][0]);
357           IntrepolFilter(&CorrSurfPtr1[peak - (2*PITCH_LAG_SPAN2+9)], &T[2][0]);
361           T[1][0] = CorrSurfPtr1[peak - (2*PITCH_LAG_SPAN2+9)];
362           T[0][1] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)];
363           T[2][1] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)];
368           IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+6)], &T[0][0]);
371           IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+3)], &T[0][2]);
373           T[1][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+5)];
374           T[0][1] = CorrSurfPtr1[peak - 1];
376           T[1][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)];
381           IntrepolFilter(&CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)], &T[2][0]);
384           IntrepolFilter(&CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)], &T[2][2]);
385           T[1][0] = CorrSurfPtr1[peak - (PITCH_LAG_SPAN2+4)];
387           T[2][1] = CorrSurfPtr1[peak + 1];
388           T[1][2] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)];
395           IntrepolFilter(&CorrSurfPtr1[peak + 2*(PITCH_LAG_SPAN2+4)], &T[0][2]);
396           IntrepolFilter(&CorrSurfPtr1[peak + (2*PITCH_LAG_SPAN2+9)], &T[2][2]);
398           T[0][1] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+4)];
399           T[2][1] = CorrSurfPtr1[peak + (PITCH_LAG_SPAN2+5)];
400           T[1][2] = CorrSurfPtr1[peak + (2*PITCH_LAG_SPAN2+9)];
404       /* 2D parabolic interpolation gives more accurate lags and peak value */
408     /* determine the highest peak, after applying a bias towards short lags */
414         peak = k;
418     lags1[peak] *= 2.0;
419     lags2[peak] *= 2.0;
421     if (lags1[peak] < (double) PITCH_MIN_LAG) lags1[peak] = (double) PITCH_MIN_LAG;
422     if (lags2[peak] < (double) PITCH_MIN_LAG) lags2[peak] = (double) PITCH_MIN_LAG;
423     if (lags1[peak] > (double) PITCH_MAX_LAG) lags1[peak] = (double) PITCH_MAX_LAG;
424     if (lags2[peak] > (double) PITCH_MAX_LAG) lags2[peak] = (double) PITCH_MAX_LAG;
426     /* store lags of highest peak in output array */
427     lags[0] = lags1[peak];
428     lags[1] = lags1[peak];
429     lags[2] = lags2[peak];
430     lags[3] = lags2[peak];
443     /* store lags of highest peak in output array */