What would you like to do?
It depends on where you are in the world. In the US, most ambulances sirens have 2 or 3 settings....a long, slowly ascending and descending Whooo sound, a short rapidly ascending and descending warble tone, and sometimes a 3rd, higher, louder, phazer sound (my favorite to get attention of complacent drivers). Rarely, US rigs will have a European, up/down, British, DA/da/DA/da/DA tone. We have 1 rig at our department with the rare European setting. I love to use that setting through intersections here in the US just to mess with people, because most Americans have never heard that tone, except in movies. Ambulances in the US also have either a genuine air powered horn (awesome), and/or an electronic simulated air horn sound (lame). If you pay attention, before long you will able to tell the difference between police, ambulance, fire engines, and personally owned emergency response sirens just by the subtle sounds of each siren. The loudest, best siren is the air powered siren on the Fire Engines. They are controlled by a foot button located on the floor of both the driver and passenger/officer seat of the engine, an air pump, and a big, loud, steel speaker horn. They are easily the loudest siren available. Some police cars in the US have a "Rumbler Siren" that bottoms out at a subsonic level to send shock waves into the ground and surrounding areas, so that even if you have a crazy loud stereo cranked up in your car, you will feel the police siren in your bones....pretty cool. Ambulance sirens are usually between 100 and 200 watts of powered sound, and about half of the drivers on the road are completely oblivious to both lights and sirens until you are really close. When you see emergency lights behind you with a siren in America, pull to the RIGHT and stop. They will always pass you on the left in the US. If it a cop, you will notice blue lights. It is very rare for any other emergency vehicles to employ blue lights in their ensemble...and usually illegal. If an unmarked police car attempts to pull you over, call 911 and verify the identity of the unmarked car before pulling over, or drive to the local PD if it is close. Although illegal, it is not hard hard to obtain emergency lights in the US, and is a tool used by criminals to pull over victims. Rare, but it happens.
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Answer to walk about or move from place to place
When the vehicle is moving towards you, the sound waves are shoved in front of it, and that makes them sound higher-pitched - then, after it has passed and is moving away from… you, the sound waves slow back down and you hear the pitch drop.
nee-naww nee-naww :)
Eee- Aww! Eee- Aww! Eee- Aww! Eee- Aww! Eee- Aww!
wooo wooo wooo wooo wooo
because they use different sorts of materials to build different sound effects
When ambulances are responding to a Priority One job (urgent situation) they activate the sirens and warning lights to alert other vehicles to let the ambulance through. The a…mbulance siren can be set to a variety of different sounds and volumes.
Nee Naw, quite like the sound of a dozen screaming children being dragged across a xylophone.
This is the doppler effect. If an ambulance is driving towards Jon, the sound waves are tightly stacked in front of the ambulance and are heard by Jon at a high frequency (hig…h pitch). But behind the ambulance the sound waves are lagging because the ambulance is driving away from they sound waves (they are moving in the opposite direction) thus if Jon was standing behind the ambulance the frequency heard would be low (low pitch). The actual sound an ambulance makes is actually obnoxious, and if 100 of them drive by someone's apartment each day, it will make their head hurt and they will often think about why ambulances are so annoying.
An ambulance is an emergency vehicle used to transport sick orinjured people to hospital.
Ambulances are commonly staffed in two person crews. The type of licensure these people have depend on the type of ambulance they are operating in. There are two different typ…es of ambulances: Basic Life Support (BLS) and Advanced Life Support (ALS). A BLS truck is staffed with at least one EMT-Basic or sometimes, an EMT-Advanced. The other crew member is either another EMT-B, EMT-A, or an Medical First Responder (MFR). A BLS truck is equipped to deal with most emergencies but will not have all the capabilities of an ALS truck. ALS trucks are staffed with at least one EMT-Paramedic, and either an EMT-B, EMT-A, or another EMT-P. These trucks and crew are trained in advanced methods such as cardiology and pharmacology and are able to do things like EKGs, start IVs and administer drugs, and intubate. An ambulance will always have at least an EMT-Basic, and most ambulances are ALS, meaning they have at least one Paramedic at all times.
The Ambulance is kind of vehicle for transportation of sick people. It is one of the safe vehicle for Injured or sick people to take him from Casualty places to hospital.
Yes. The A has the short A spund as in am and dam.
The first A has a short A sound as in am and ample. The U and second A have schwa sounds.
Why do you hear a higher pitched sound when an ambulance is moving toward you and a lower sound when an ambulance is moving away from you than you would if you and the ambulance were both at rest?
That's called the "Doppler" effect, named for the scientist who explained it. You're standing still, but the train or ambulance is moving toward you. The horn or siren is go…ing. The sound waves go out in every direction, at the speed of sound (about 750 miles per hour, depending on atmospheric pressure). As the train is moving TOWARD you, the sound waves that it generates are being pushed together, because the train is moving too. We hear the effect as if the frequency of the sound waves is pushed together, increasing the frequency. As the train passes by, we hear the "Doppler shift" to the lower frequency, because how the train is moving AWAY and the sound frequencies are stretched out. Now we hear the sound at a lower frequency. If we carefully analyze the Doppler shift, we can determine; 1. Exactly how fast the train was moving 2. How far away the train was when it passed by. Police use the same thing; you're driving along the highway, and a police officer points his radar gun at your car. The radar gun is precisely calibrated for frequency. The radar waves hit your car and bounce off, and the Doppler-shifted frequency can be used to calculate how fast you were going.