Referee Whistle & Buzzer
Choose a sound, set the volume, and play it locally for informal games or practice. Every trigger is recorded in a temporary event log.
Audio starts after a click and stops automatically.
Ready
A QUICK WALKTHROUGH
How to use this tool
- Choose one of six referee, buzzer, horn, or alarm sounds.
- Set a volume from 0–70% and press a sound button.
- Use Stop to cancel scheduled sound, or Clear log to remove the temporary event history.
Six bounded sound types
Short Whistle is a 0.35-second high sine sweep; Long Whistle is a 1-second sustained sweep; Double Whistle is two 0.27-second tweets separated by 0.32 seconds; Buzzer is a stepped low square-wave sports buzzer lasting 1.75 seconds; Air Horn is a 1.4-second sawtooth horn with harmonics; Alarm is five short alternating square-wave pulses.
Local and stoppable
All sounds are synthesized with Web Audio after a user gesture. No microphone, recording, upload, stream, or audio file is used. Stop cancels every scheduled oscillator and closes the AudioContext; sounds also have fixed maximum durations.
GOOD TO KNOW
Common questions
Does it use recordings?
No. Each sound is synthesized locally with Web Audio.
Can a sound continue forever?
No. Every sound has a fixed duration, and Stop cancels scheduled audio immediately.
What is recorded in the event log?
Only the selected sound label and local time for this page session. It is not uploaded or saved.