-int VikingDecode(uint8_t *BitStream, size_t size, size_t *startIdx,uint8_t *id_bit,size_t id_bits_size);
-
+int PyramiddemodFSK(uint8_t *dest, size_t *size);
+int VikingDemod_AM(uint8_t *dest, size_t *size);
+int PrescoDemod(uint8_t *dest, size_t *size);
+int NedapDemod(uint8_t *dest, size_t *size);
+int JablotronDemod(uint8_t *dest, size_t *size);
+int Visa2kDemod_AM(uint8_t *dest, size_t *size);
+int NoralsyDemod_AM(uint8_t *dest, size_t *size);