Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [whistles]

Questions about whistles

3
votes
0answers
92 views

Under optimal conditions, how far could an emergency whistle be heard?

Whistles are often used for emergency signalling, it would be good to know how far that signal can travel and still be recognized. There are plenty of factors that would affect the distance, so how ...
18
votes
3answers
6k views

Where can I test an emergency whistle?

I've just 3d-printed what's supposed to be an ear-shatteringly loud emergency whistle (120 dB at one meter). However, it's apparently somewhat sensitive to printing conditions, because some people ...
5
votes
4answers
185 views

Are there sound-based alternatives to whistle signals for group communication?

Whistles can be used to signal to group members, however the downside is that other people may think you are having an emergency. Are there any other devices that would allow you to signal with noise ...
11
votes
4answers
2k views

Are there standard whistle signals for communicating with separated party members?

Similar to the previous question that turned up when I searched on this topic: Is there a standard set of light signals for mountaineers?, but for sound? Repeating sets of 3 blasts is standard for ...
11
votes
4answers
680 views

What qualities to look for in a good emergency whistle?

I've always been taught to keep a whistle on me in case of emergencies - it makes sense since it's small and lightweight but could really help in an emergency. However, something I've never really ...