Baud rate
The baud rate is the number of signal changes that occur per second.
For example, if we have a baud rate of 9600, that means that there are 9600 signal changes per second (the number of times that the signal changes its state / value per second).
This isn’t always the same as the bit rate, because a single signal change can sometimes represent multiple bits of data, depending on the way we encode the data. For example, if we use a modulation scheme that allows us to encode 4 bits per signal change, then a baud rate of 9600 would correspond to a bit rate of 38400 bits per second (9600 signal changes per second * 4 bits per signal change = 38400 bits per second).
Calculating baud rate
Section titled “Calculating baud rate”If we know the bit rate and the number of bits per signal change, we can calculate the baud rate using the formula: