Odd siren on an ambulance

[gandalftheman241]

This has been bugging me for awhile. I found a video of a compilation of emergency vehicles on 9/11, there is this one ambulance that has the most odd siren I've ever heard. It makes this "pop" sound. It's extremely hard to describe. You need to listen to it to know what I'm talking about.

Anyone recognize this siren?

Also I heard a siren which is frequently heard in stock police siren audios. Here's the timestamp for it:

 

[SurgePGH]

This has been bugging me for awhile. I found a video of a compilation of emergency vehicles on 9/11, there is this one ambulance that has the most odd siren I've ever heard. It makes this "pop" sound. It's extremely hard to describe. You need to listen to it to know what I'm talking about.

Anyone recognize this siren?

Also I heard a siren which is frequently heard in stock police siren audios. Here's the timestamp for it:

Out of 24 minutes of sirens.... Which one are you talking about??

 

[gandalftheman241]

Out of 24 minutes of sirens.... Which one are you talking about??

That's odd. The link I provided automatically gives puts you at the specified timestamp.
The first one is at 22:16.
The second is at 16:07.

 

[SurgePGH]

at 22:16 it's just the operator hitting the manual button and releasing it right away. Very common in the city.

 

[gandalftheman241]

at 22:16 it's just the operator hitting the manual button and releasing it right away. Very common in the city.

The thing is, it has a very odd "pop" sound to it. That's why I asked my original question. I'm wondering what model the siren is.

 

[SurgePGH]

at 22:16 it's just the operator hitting the manual button and releasing it right away. Very common in the city.

That's odd. The link I provided automatically gives puts you at the specified timestamp.
The first one is at 22:16.
The second is at 16:07.

There is no designated Police vs. Fire vs. EMS siren. The siren used depends on customer spec. Some customers spec "Siren and Light control" No specific brand. Some states/ Municipalities will specify certain tones be "locked Out" (California is good for this) because certain tones do not meet sound pressure limits. Hyper Yelp and Phaser are good examples of this. The use of electronic airhorns is prohibited in certain jurisdictions for the same reason. Some uninformed operators believe that the use of the electronic airhorn used with the siren attracts more attention. It in fact has been proven quite the opposite for the sound pressure aspects again. This is why the Howler style siren assist devices are gaining popularity.

 

[NJEMT]

It sounds like a Scientific Prototypes Mark VIII.

 

[Wailer]

I hear lots of Whelen and Federal Smart Sirens in those videos.

 

[gandalftheman241]

It sounds like a Scientific Prototypes Mark VIII.

To me it sounds like a Code 3. The SP can't really do the wail that fast. It's extremely weird.

 

[classifieds869294]

To me it sounds like a Code 3. The SP can't really do the wail that fast. It's extremely weird.

I agree, to me it’s the classic sound of quickly tapping the manual button on an old Code 3 V-con siren. Something you’d always hear in NYC back when the city ambulances used them.

 

[Trebor Cadeau]

22:18 is a guinea pig.