pea whistle
Coach's shrill signal
A pea whistle is a small whistle with a ball inside that rattles when blown, producing the sharp, trilling sound associated with referees and coaches: The referee blew her pea whistle to stop play.
The pea—originally cork, now usually synthetic—bounces rapidly against the walls of the chamber, breaking the airflow into pulses.
- tootShort horn sound
- peepBrief secret look
- trumpetValved brass wind instrument
- buzzerElectric signaling device
- kazooBuzzing voice-powered instrument
bugle · siren · bell · flute · fire alarm · lanyard · referee · sports official · harmonica · gong · ocarina · recorder · panpipe · trilling · clarinet · emergency beacon · tweet · coach
- whistles
- fipple flutesrecorder, flageolet, soprano recorder, ocarina
volume/power
pea whistlefoghorn
Loud maritime warning device
air raid siren · train whistle · air horn · tornado siren · klaxon
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