Simplify the following text for a Grade 9 native English-speaking person.
Original: In telecommunications and electronics , baud ( , unit symbol `` Bd '' ) is synonymous to symbols per second or pulses per second . It is the unit of symbol rate , also known as baud rate or modulation rate ; the number of distinct symbol changes ( signaling events ) made to the transmission medium per second in a digitally modulated signal or a line code .
Simplified: In telecommunications , Baud is the unit to measure the symbol rate .