Question

Write about the decimator needed for a fraction rate conversion

Answer 1

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The decimation factor is simply the ratio of the input rate to the output rate. It is usually symbolized by “M”, so input rate / output rate=M.

Tip: You can remember that “M” is the symbol for decimation factor by thinking of “deci-M-ation”. (Exercise for the student: which letter is used as the symbol for interpo-L-ation factor!