Wow! I didn't know that my favorite tone was actually just Hi-Lo at an extremely fast alternating frequency. That I will say. You learn new things everyday.
Drivers make pretty much any sound. They just convert electrical occilation to compression waves directly through a diaphragm. Occilating 2 tones is nothing alien to electromechanical sirens though. My hypothesis is that the layout of the ports on a small duel tone bolt's chopper may be distributed in sutch a way that at some points in it's rotation only one of the 2 tones are audible. This occurring very frequently with each rotation if the chopper could make a hig-low oscillation that is indistinguishable to the human ear, making the bolt's distinctly gritty/harsh sound.
@@tionstav5799 Either you didnt get what I said, or you tried educating me on a motor powered siren. The Thunderbolt uses a 2 horsepower motor that rotates up to 7000+ RPM, the higher the RPM the higher the pitch. The Thunderbolt utilizes either a 5, 5/6, and 4/5 port chopper. Once the chopper reaches chopper level rpm, it creates a dual tone noise, 5 is a longer port hole on 5/6 and 4 is a longer port hole on 4/5. There is the horn hole where both chopper ports "chop" air to create a vibration at a certain hz, the blower is essentially an amplifier to the siren and causes raspyness, and the forced air up the tube hole, amplifies the dB output and creates a more raspy version of the Model 2T (same choppers). Drivers are nowhere used in a Thunderbolt, only motors, and a chopper, the chopper holes or ports are lined up to nearly match one port after the other, which will create a rasp and dual tone sound. Yes I may have missed the point of your comment, but I tried to explain how a chopper works in a Thunderbolt.
Sort of. The dual tone thunderbolt sound is characterised by heavy intermodular distortion which is what happens when you clip a waveform asymmetrically. This adds frequency content that isn't harmonically related to the original two tones, and creates the rather harsh sound of a Thunderbolt, at least compared to most other dual tone sirens. On a real Thunderbolt the source of this asymmetry is probably due to the external blower keeping the airflow about the same regardless of whether one row of ports are open, or both rows. If you add two square waves together that are a minor third apart, and then chop off half of the resulting waveform, the resulting sound is very reminiscent of a Thunderbolt. It ends up being a pulse wave where the pulse width varies with each cycle, which technically I guess you could think of it as very fast alternation between different frequencies. However it's a bit more complex than the Whelen air horn sound.
@@SirensAndAlarmsOfNorthernIL i never said it didn't? are you talking about the Digital ESC-864 because that does have this airhorn, im talking about the Analog One
Wow: The Whelen Airhorn/Pulse tone plays the Hi/Low tones. I thought it is a random bunch of other tones combined together to make the sound. This video seems legit.
Some 4004's sound more like this or have an electronic like sounding because of an older, weaker cycle (50, 60 like in the vid) that us slower, that means they do the hi lo slower than usual. Higher repeating would make the airhorn sound more realistic like maybe level 100
I mean Sirens are Scary and im serious It could go off anytime for Curfews during Holidays like Halloween or Fire Signal at Fire Departments for Fire calls or Tornado or Hurricanes coming your way depending on what state or state your in plus islands Or Danger coming from another country on Tornado Drills or Cemonys
![Sirens doing weird or unusual things compilation [TAKE 2]](http://i.ytimg.com/vi/vCPhdw_8AR8/mqdefault.jpg)
![Sirens doing weird or unusual things compilation [TAKE 2]](/img/tr.png)
I always thought it was just a separate sound card that makes a burp or roar kind of sound.
Me too
same
Same
Same
Well you was entirely wrong thinking that
This is an incredible visualization/audiation of this concept!
Perfection for the hi - lo 00:00
@@chantek85 0:01 *
@@YourAverageMODude145ur the most annoying person on the internet
One of the most terrifying signals produced by a Whelen.
I’d say their CHP siren tones can bring some scare to the person they’re behind…
Never thought it actually was made by a fast switching rate of a hi and lo tone. Great video!
Very cool audio/visual demo! Never thought it was hi lo sped up to make that air horn like sound.
Incredibly simple and well put together video!
Wow! I didn't know that my favorite tone was actually just Hi-Lo at an extremely fast alternating frequency. That I will say. You learn new things everyday.
Woah. I had no idea that's how it worked
Okay that's really interesting. But it also makes sense as well.
This video is awesome! Thanks for the visualization
Clay? CLAY???
Wow I would have never guessed...
I wonder if this could give us a clue to what gives duel tone bolts there course sound.
Thunderbolts are Electro-Mechnical, not electric...
Drivers make pretty much any sound. They just convert electrical occilation to compression waves directly through a diaphragm.
Occilating 2 tones is nothing alien to electromechanical sirens though. My hypothesis is that the layout of the ports on a small duel tone bolt's chopper may be distributed in sutch a way that at some points in it's rotation only one of the 2 tones are audible.
This occurring very frequently with each rotation if the chopper could make a hig-low oscillation that is indistinguishable to the human ear, making the bolt's distinctly gritty/harsh sound.
@@tionstav5799 Either you didnt get what I said, or you tried educating me on a motor powered siren. The Thunderbolt uses a 2 horsepower motor that rotates up to 7000+ RPM, the higher the RPM the higher the pitch. The Thunderbolt utilizes either a 5, 5/6, and 4/5 port chopper. Once the chopper reaches chopper level rpm, it creates a dual tone noise, 5 is a longer port hole on 5/6 and 4 is a longer port hole on 4/5. There is the horn hole where both chopper ports "chop" air to create a vibration at a certain hz, the blower is essentially an amplifier to the siren and causes raspyness, and the forced air up the tube hole, amplifies the dB output and creates a more raspy version of the Model 2T (same choppers). Drivers are nowhere used in a Thunderbolt, only motors, and a chopper, the chopper holes or ports are lined up to nearly match one port after the other, which will create a rasp and dual tone sound. Yes I may have missed the point of your comment, but I tried to explain how a chopper works in a Thunderbolt.
Sort of. The dual tone thunderbolt sound is characterised by heavy intermodular distortion which is what happens when you clip a waveform asymmetrically. This adds frequency content that isn't harmonically related to the original two tones, and creates the rather harsh sound of a Thunderbolt, at least compared to most other dual tone sirens.
On a real Thunderbolt the source of this asymmetry is probably due to the external blower keeping the airflow about the same regardless of whether one row of ports are open, or both rows.
If you add two square waves together that are a minor third apart, and then chop off half of the resulting waveform, the resulting sound is very reminiscent of a Thunderbolt. It ends up being a pulse wave where the pulse width varies with each cycle, which technically I guess you could think of it as very fast alternation between different frequencies. However it's a bit more complex than the Whelen air horn sound.
What about an airhorn sound, but it's the wail signal sped up?
Exactly how older time landline ringers worked
After all these years I just realized it's hi lo sped up. I'm shocked. Learn something new every day.
Did they use a sped-up hi lo to create an air horn sound?
What's it look like lol
why this will calm me down from watching a hellspawn of a video
I actually have this siren for my neighbor hood. *CLARE COUNTY MICHIGAN* and I never knew that’s how it does it.
It’s like saying hi!
Very good visual!
How i see the hilo and airhorn modes work will never be the same.
Awesome demonstration
Learn something new everyday. Whether I want to or not. 👍🏼
Great video.
WHAT!?!?
Scaring Wichita Falls with a fast high low tone?
Because she's error
Oh Wow! i always thought it used 3+ Frequencys to get the air horn tone. but what about the ESC-864? does it's airhorn work in a similar way?
Whelen's air horn has always worked like this. Even with the first run ESC-864s.
@@gulliverarchives9529 Ah, Thanks for the Info!
This tone IS on the ESC-865 lmao
@@SirensAndAlarmsOfNorthernIL i never said it didn't? are you talking about the Digital ESC-864 because that does have this airhorn, im talking about the Analog One
@@Superluck77Lol ah shit I misread lmfao. Idk about the analog controls but I bet it doesn’t. I gotta look that up
A lot of fire alarm signals do this, too. The Wheelock AES and Pyrotronics HEF three-tone horns are two examples, although I'm sure there are others.
Siren at first:🙂
Siren at last:💀burp
2810:hey, what do you say?
(Broken solar panel reference)
Excuse me @@nellycristalhdezguillermo6693
This is a cool ass representation. i knew about this from a friend, but this visualization really helps
Wow: The Whelen Airhorn/Pulse tone plays the Hi/Low tones. I thought it is a random bunch of other tones combined together to make the sound. This video seems legit.
this is dramatic though bc the sound speeds up and in the end sounds like an airplane engine. A noticeable Shepard tone is also played.
@@mjt777x8 wdym sounds like an airplane engine
@@dank980when it speeds up.
Also in the website, you notice that the low pitch plays before the rest. Interesting
Wow, I didn’t know it was that simple! I thought it was a separate sound card.
Oh great, now I can fix the air horn tone on the whelen siren I built in another game
what did you do first?
0:25 *a i r h o r n*
I love this video
Some 4004's sound more like this or have an electronic like sounding because of an older, weaker cycle (50, 60 like in the vid) that us slower, that means they do the hi lo slower than usual. Higher repeating would make the airhorn sound more realistic like maybe level 100
What are the frequencies of the high and low tones?
waveform output from whelen siren is sinewave or squarewave?
I analyzed the recording from Whelen's website and this is exactly what is happening
sounds like a heartbeat getting faster
Really fast Hilo?
Yup. Just a super fast hi lo
0:23 siren
Didn’t even know this, I too thought it was a separate sound card.
That is so epic!!!
Uttryr
Now that's epic 😎
Incredible!!
This could be a good acceleration alarm
Sick
DIGITAL MODULATION.
FREQUENCY SHIFT KEY.
FSK.
DIGITAL WHELEN CONTROLS.
00.62 Hz - 60.00 Hz.
Yes it is an FSK-like modulation that is used to create this tone, but it isn’t really any information for decoders
At first I’m like uhhhh, but this is hilo….. then you starting speeding it up and I was like AHHHHH OK
when you press the high-low button 0:01 when you spam the high-low button 0:25
so kind of like pulse?
Reminds me of like a generator or one of the loud coolers
Then:
Swap Rate is 00.62, let's speed it up.
*[Hi-Lo becomes Air-Horn]*
Now:
Swap Rate is 60.00, All good.
How many Hz is Airhorn?
Lyndhurst Nj has this type of siren its a Civil Defense Siren
bro when it gets to 0:22 it sounds like me trying to be quiet in a walmart bathroom
The thing is i somehow knew this is how its made before alot of people did. I thought everyone else know
So Cool!!
Sounds Like Is From
The Cannon Beach,
Oregon Tsunami Warning
Nice lol
Whelen's air horn signal is new!
What’s this tone used for?!?
Basically whatever the mayor wants it to be used for. Nuclear attacks, air raids, tornados, etc
The signal what is sounds like is hi-Lo
I mean Sirens are Scary and im serious It could go off anytime for Curfews during Holidays like Halloween or Fire Signal at Fire Departments for Fire calls or Tornado or Hurricanes coming your way depending on what state or state your in plus islands Or Danger coming from another country on Tornado Drills or Cemonys
MAN THATS TOO SCARY😱😱😱
I like How the High and Low went extremely fast 😂😂😂😂😂😂😂😂😂😂 then the Buzz tone
Whats the air horn tone even mean
biggest brain thing i've ever seen
That’s cool and good to know
the buzz tone sounds like the baldi's basics classic remastered alarm on party mode..
What app did you use to do this
I could be crazy but this sounds kinda creepy on the windup
DAMN THATS SO COOL WOW
start:hilo
middle:sonic running
end:💀
Sounds like my PC crashing😂
new particle accelerator
Neat!
better than a police siren air horn.
Honk
If you put this in 2x, it will sound very fast
Seems like someone drank too much Tempest Cola
Seems like you should shut up
No
Enough with THE SHITTY MOTHERFUCKER (TSM) REFERENCES, that shit attracts a lot of siren kiddies.
You broke the hi lo
that sounds exactly like it
Or Hazourous metal so Sirens could be herd for that
0:25 air horn tone
Imagine if this was the windup for the airhorn lmao
Lol.
grandpa clapping his sons cheeks:
Siren’s start at 1:00 p.m
0:18 sounds like an p 50 wind up
Can you do one with the older Whelen hi lo? like this one ua-cam.com/video/BGp9-Ro5h8Y/v-deo.html
The same thing happens but at a lower pitch
@@HSETM I know I just wanna hear
Sounds scary but funny 😁 😂 😀 😄 😆 🤣
2 voices and a clock.
Hugh tone:on low tone:on
Sounds like a car when you speed it up lol
Interesting.
countdowns be like...
Oohhh so whelens can wind up
whelen particle accelerator
I hate to Break this to you.
But those are Pitches. Not Tones.
0:24 "**** you"
No offense or hate to anyone tho
Whelen wps 4004