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I am doing a math homework but I'm not understanding one part of the question. What would be the 32 intensity values in following question:

Suppose that a digitized TV picture is to be transmitted from a source that uses a matrix 480x500 pictures elements (pixels), where each pixel can take on one of 32 intensity values. Assume that 30 pictures are sent per second. Find the source rate R (bps)

I have found the answer here but I'm struggling figure out what does intensity values mean.

Any tips?

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Near as I can tell, it doesn't matter what "intensity level" means so much as that there are 32 possible states for each pixel, so you need enough space/bandwidth to indicate which of those 32 states each pixel is in.

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Because there are $32$ intensity levels and each pixel can have one of these levels.So each pixel will take 5 bits to represent itself(as $32=2^5$).Now one picture =$480\times 500$ pixels $30$ pictures per second =$480\times 500\times 30$ pixels will be needed to sent per second and as each pixel need $5$ bits So total no. of bits to be sent per second=$480\times 500\times 30\times 5 $

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