- a series of chirps
- peep: make high-pitched sounds; "the birds were chirping in the bushes"
- A chirp is a signal in which the frequency increases ('up-chirp') or decreases ('down-chirp') with time. In some sources, the term chirp is used interchangeably with sweep signal. It is commonly used in sonar and radar, but has other applications, such as in spread spectrum communications. ...