a. The critical bandwidth for average human hearing is a constant 100Hz for frequencies less than 500Hz and increases (approximately) linearly by 100Hz for each additional 500Hz. i. Given a frequency of 300Hz, what is the next highest (integer) frequency signal that is distinguished by the human ear assuming the later signal is of substantially lower amplitude? (5 Marks) ii. Given a frequency of 5000Hz, what is the next highest (integer) frequency signal that is distinguishable by the human ear assuming the latter signal is of substantially lower amplitude? (4 Marks)
b. Explain the benefits of converting RGB values to YIQ (or any luminance + chrominance representation) when transmitting a color signal. (5 Marks) c. Why is it not efficient to simply apply an image coder (say JPEG) to individual video frames? (4 Marks) d. Explain why compressed video stream are sensitive to transmission errors. (2 Marks)
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