An analog signal is bandlimited to 4 kHz and sampled at Nyquist rate. The samples are quantised into 4 levels. Find the information rate of the source, if (a) the probability of occurrence of the inner two levels are three times that of the extreme two levels. (b) all the levels are equally likely. A radio announcer describes a TV picture orally in 1000 words out of his vocabulary of 10,000 words. Assume that each of the 10,000 words is equally likely to occur in the description of the TV picture. The TV picture consists of 0.1 million pixels. Each of the pixels can assume 16 different brightness values with equal probability. Find the ratio of the information content of the TV picture and the radio announcer's description of the same picture. A