Merge fast detector with analyzer and use it in CBuffer

PitchTracker/Helper.h

@@ -9,7 +9,7 @@ float* short2FloatArray(short* in, size_t len){
 
 	float* result = static_cast<float*>(malloc(len * sizeof(float)));
 	float* curOut = result;
-	for(int i=0; i<len; i++){
+	for(size_t i=0; i<len; i++){
 		*curOut = *in / maxShort;
 		curOut++;
 		in++;
@@ -22,7 +22,7 @@ double* short2DoubleArray(short* in, size_t len, bool scale = true){
 
 	double* result = static_cast<double*>(malloc(len * sizeof(double)));
 	double* curOut = result;
-	for(int i=0; i<len; i++){
+	for(size_t i=0; i<len; i++){
 		*curOut = *in;
 		if(scale)
 			*curOut /= maxShort;