Part A: Contribution to unit's forum at Moodle (60 marks) Every student has to watch all the weekly YouTube videos relating to the topic for the week posted on the unit's forum at Moodle site. The student has to formulate one technicallyinteresting question from the content of the video and post it to the forum for discussions with other students. It is not allowed to post the same question posted by another student. That would be plagiarism. Also, each week every student has to respond to at least one question posted by another student. Students are expected to answer another student's questions so that co-operatively every student understands the subject matter. A student is expected to post an answer to a question asked if no one was able to answer it correctly. PART B: -law and A-law Compander Design Using MATLAB/Simulink (40 marks) Most modern communications systems operate in the digital domain for various reasons. However, most practical signals handled by these systems are naturally analogue in nature. Thus, an interface is needed between the signals and the systems handling them. This interface is called analogue-to-digital converter (ADC) and its reciprocal, digital-to analogue converter (DAC). The three main components in the ADC are sampler, quantizer and encoder. Task: Implement in MATLAB/Simulink nonlinear quantizers using -law and A-law Compander and compare them