Question 4 Analyse two audio sequence where sequence A is "200 205206207207209205203207206 210 " while audio sequence B is "2000 2020200019802010201020102020202520352045 ". (a) Convert sequence A into DPCM. How many bits is required for DPCM in sequence A? Justify your answer. (5 marks) (b) Using the DPCM in sequence A, except the first term (i.e. 200), construct and apply the corresponding Huffman code tree. (5 marks) (c) Convert sequence B into DPCM. How many bits is required for DPCM in sequence B? Justify your answer. (5 marks) (d) Using the DPCM in sequence B, except the first term (i.e. 2000), construct and apply the corresponding Huffman code tree. (5 marks) (e) Critique the performance of DPCM in the noisy channel if one of the bits of the DPCM code has been changed to different value, for example 2 become 2