-int manchester_decode( int * data, const size_t len, uint8_t * dataout, size_t dataoutlen);
-int GetT55x7Clock( const int * data, const size_t len, int high );
-int DetectFirstTransition(const int * data, const size_t len, int low);
-void PrintPaddedManchester( uint8_t * bitStream, size_t len, size_t blocksize);
-void ManchesterDiffDecodedString( const uint8_t *bitStream, size_t len, uint8_t invert );
-int ManchesterConvertFrom255(const int * data, const size_t len, uint8_t * dataout,int dataoutlen, int high, int low, int clock, int startIndex);
-int ManchesterConvertFrom1(const int * data, const size_t len, uint8_t * dataout, int dataoutlen, int clock, int startIndex);
-void iceFsk2(int * data, const size_t len);
-void iceFsk3(int * data, const size_t len);
+void iceIIR_Butterworth(int * data, const size_t len);
+void iceSimple_Filter(int *data, const size_t len, uint8_t k);