Siren Noise Effectiveness

Cutting Through the Noise: Sirens and Emergency Vehicle Detection.

Blog post on acentech.com, September 17, 2018.

https://www.acentech.com/blog/cutting-through-the-noise-sirens-and-emergency-vehicle-detection/


D’Angela, Peter. Emergency Vehicle Siren Noise Effectiveness.

MASc Thesis, University of Windsor, 2003.

https://scholar.uwindsor.ca/cgi/viewcontent.cgi?article=5966&context=etd#page=25 

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Two Tone Sirens

The availability of a two tone sirens seems to vary by manufacturer – some models offer more sound options than others.

Here are some manufacturers:

Federal Signal
https://www.fedsig.com/police-sirens-comparison

D&R Electronics 
https://www.dandrelectronics.com/rds-series.html

Carson
https://carson-mfg.com/console-mount-sirens/

Feniex
https://www.feniex.com/sirens-controllers

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“Rumbler” Low-Frequency Sirens

Federal Signal sells ‘rumblers’ –  a type of siren that emits a low-frequency soundwave:

https://www.fedsig.com/product/rumbler

Apparently this low frequency sound can travel very far, and can penetrate into neighbouring buildings. Rumblers are installed on the Dodge Charger patrol vehicles being used by VPD

About rumbler sirens from NoiseOFF, a group that advocates to reduce noise pollution in communities. 

http://www.noiseoff.org/rumbler.php

Vancouver Police introduce new siren you can feel.

Global News, June 6, 2014

https://globalnews.ca/news/1379899/vancouver-police-introduce-new-siren-you-can-feel/

Vancouver Police Launch New Police Cars.

VPD News release issued July 10, 2013.

https://vpd.ca/news/2013/07/10/vancouver-police-launch-new-police-cars/

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