Here is a definition of bandwidth that I know:
Bandwidth is defined as a band containing all frequencies
between upper cut-off and lower cut-off frequencies."
But I also saw the formula:
\(B=\frac{1}{\tau}\)
This formula seems not fit with the definition above.
My question is:
Why bandwidth is related to pulse width that is B=1/τ where τ is the pulsewidth?
Bandwidth is defined as a band containing all frequencies
between upper cut-off and lower cut-off frequencies."
But I also saw the formula:
\(B=\frac{1}{\tau}\)
This formula seems not fit with the definition above.
My question is:
Why bandwidth is related to pulse width that is B=1/τ where τ is the pulsewidth?