: to change the sound of (your voice) by making it quieter, higher, lower, etc.
music : to move gradually from one key to another
: to change or adjust (something) so that it exists in a balanced or proper amount
What made you want to look up modulate? Please tell us where you read or heard it (including the quote, if possible).
Take our visual vocab quiz
A quick quiz about stuff worth knowing
The commonly misspelled words quiz
The Vocab Quiz Game for iPhone & iPad
"Incredibly fun and addictive. And informative!" User Review, iTunes