Library Waveform Filename add Price Description ShortID Category Time Location Resolution Track ID Sound Library Channels

Alarm Horn Sounds

Unlike mechanical sirens, pneumatic alarm sirens can create a two-tone sound. Pneumatic sirens with horns are typically used on ships. The bigger the ship, the lower the sound of the horn. The Sounddogs Archive features some very nice recordings of ship horn sounds and pneumatic sirens. Below you will find an impressive example of a big ship's signal horn.

Alarm Horn Siren Sounds

Pneumatic alarm sirens can create enormous sound pressure and spread it across big distances thanks to the horns mounted on the top of the siren. The construction of pneumatic alarm sirens is different from mechanical sirens. While the mechanical siren creates the airstream with the help of centrifugal forces, the pneumatic alarm siren uses a compressed air canister to pump the airstream into the siren head.

Alarm Horn Siren

The air-powered alarm siren (pneumatic siren) is easily identified by the horns mounted to the siren's head. Similar to a mechanical siren, the air-powered alarm sirens create their signal by interrupting the air-stream cycle with the help of a perforated disc. The spinning disc inside the siren's head is called a rotor; it is electrically powered. The air-stream is directed through the holes in the rotor and external vents. The spinning motion of the rotor either opens or closes the holes, which creates the sound of the siren that is then directed to several horns. The air-stream that is needed for the operation of the siren is created by an Aerosol canister underneath the siren.

The main benefit of this type of siren is the extremely high sound level it creates. Pneumatic sirens can reach a sound pressure level of 130db (!) at a distance of 20 meters. The other benefit is the use of pressurised air. With the help of compressed air from a tank, these sirens can create a very high sound level almost immediately, which is very important for the proper operation of a siren. Pneumatic sirens also need less electrical power than mechanical sirens (but they do require more maintenance).
Many of these high-performance sirens were de-installed after the Cold War because they were no longer used. You can still see the pylons that those big old sirens used to be attached to (although nowadays they are more likely to house a mobile antenna than a siren).

Two-tone Horns Sounds

Unlike mechanical sirens, pneumatic alarm sirens can create a two-tone sound. Pneumatic sirens with horns are typically used on ships. The bigger the ship, the lower the sound of the horn. The Sounddogs Archive features some very nice recordings of ship horn sounds and pneumatic sirens. Below you will find an impressive example of a big ship's signal horn.

1 BBC Sound Effects Library BBC Alarm Category, Alarm Horn Horns.BBC.EC3W2 Sound Effects Waveform Horns.BBC.EC3W2.wav $ 4.00* Alarm, Horn: Alarm, Horn: Sirens And Bells: Air Horn

Alarm

Alarm Horn

0:34 16 Bit / 44100 kHz 26415 BBC Sound Effects Library 2.0
2 BBC Sound Effects Library BBC Alarm Category, Alarm Air Horn Horns.BBC.ECD69b Sound Effects Waveform Horns.BBC.ECD69b.wav $ 3.00* Alarm, Air Horn: Alarm, Air Horn: Air Horn - 5 Short Blasts Alarm Alarm Air Horn 0:10 16 Bit / 44100 kHz 26368 BBC Sound Effects Library 2.0
3 BBC Sound Effects Library BBC Alarm Category, Alarm Air Horn Horns.BBC.ECD69a Sound Effects Waveform Horns.BBC.ECD69a.wav $ 4.00* Alarm, Air Horn: Alarm, Air Horn: Air Horn - Long Blast Alarm Alarm Air Horn 0:15 16 Bit / 44100 kHz 26369 BBC Sound Effects Library 2.0
4 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Squeak,Rubber Duck,Ala Sound Effects Waveform Horn,Squeak,Rubber Duck,Ala.wav $ 2.00* Alarm, Horn: Horn Squeak Rubber Duck Alarm Alarm Alarm Horn 0:01 16 Bit / 48000 kHz 90880 Sounddogs Sound Library 2.0
5 BBC Sound Effects Library BBC Alarm Category, Alarm Air Horn Horns.BBC.ECD142 Sound Effects Waveform Horns.BBC.ECD142.wav $ 3.00* Alarm, Air Horn: Alarm, Air Horn: Trolleybus Klaxon Sounded. Romania Alarm Alarm Air Horn 0:09 16 Bit / 44100 kHz 26370 BBC Sound Effects Library 2.0
6 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Squeaks,Rubber Duck Sound Effects Waveform Horn,Squeaks,Rubber Duck.wav $ 2.00* Alarm, Horn: Horn Squeaks Rubber Duck Alarm Alarm Horn 0:01 16 Bit / 48000 kHz 90884 Sounddogs Sound Library 2.0
7 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,GrandAm,2 Honks,Static Sound Effects Waveform Horn,GrandAm,2 Honks,Static.wav $ 2.00* Alarm, Horn: Horn GrandAm 2 Honks Static Alarm Alarm Horn 0:01 16 Bit / 48000 kHz 90868 Sounddogs Sound Library 2.0
8 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Blast,NBA,Time Out,Cro Sound Effects Waveform Horn,Blast,NBA,Time Out,Cro.wav $ 2.00* Alarm, Horn: Horn Blast NBA Time Out Crowd Alarm Alarm Horn 0:03 16 Bit / 48000 kHz 90852 Sounddogs Sound Library 2.0
9 Rob Nokes Sound Library Sounddogs Alarm Category, Alarm Air Horn Air Horn,Blast,Short,Succinct Sound Effects Waveform Air Horn,Blast,Short,Succinct.wav $ 2.00* Alarm, Air Horn: Air Horn Blast Short Succinct Alarm Alarm Air Horn 0:01 24 Bit / 48000 kHz 21967 Rob Nokes Sound Library 1.0
10 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Shaman,Hoots,Buzz Sound Effects Waveform Horn,Shaman,Hoots,Buzz.wav $ 2.00* Alarm, Horn: Horn Shaman Hoots Buzz Alarm Alarm Horn 0:03 16 Bit / 48000 kHz 90879 Sounddogs Sound Library 2.0
11 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Doppler,By,GrandAm,Too Sound Effects Waveform Horn,Doppler,By,GrandAm,Too.wav $ 4.00* Alarm, Horn: Horn Doppler By GrandAm Toots Alarm Alarm Horn 0:26 16 Bit / 48000 kHz 90863 Sounddogs Sound Library 2.0
12 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Party,Blow,Single,Long Sound Effects Waveform Horn,Party,Blow,Single,Long.wav $ 2.00* Alarm, Horn: Horn Party Blow Single Long Alarm Alarm Horn 0:01 16 Bit / 48000 kHz 90874 Sounddogs Sound Library 2.0
13 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Boat,Steam,3,Raspy,BG Sound Effects Waveform Horn,Boat,Steam,3,Raspy,BG.wav $ 3.00* Alarm, Horn: Horn Boat Steam 3 Raspy BG Alarm Alarm Horn 0:06 16 Bit / 48000 kHz 90858 Sounddogs Sound Library 2.0
14 Rob Nokes Sound Library Sounddogs Alarm Category, Alarm Air Horn Air Horn,Blast,Dist,Short,1 Sound Effects Waveform Air Horn,Blast,Dist,Short,1.wav $ 2.00* Alarm, Air Horn: Air Horn Blast Distant Short 1 Alarm Alarm Air Horn 0:01 24 Bit / 48000 kHz 21962 Rob Nokes Sound Library 1.0
15 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Truck,Doppler,Long,Awa Sound Effects Waveform Horn,Truck,Doppler,Long,Awa.wav $ 3.00* Alarm, Horn: Horn Truck Doppler Long Away Alarm Alarm Horn 0:06 16 Bit / 48000 kHz 90890 Sounddogs Sound Library 1.0
16 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Steam Boat,Mid,Lazy,Re Sound Effects Waveform Horn,Steam Boat,Mid,Lazy,Re.wav $ 2.00* Alarm, Horn: Horn Steam Boat Mid Lazy Reverb Alarm Alarm Horn 0:05 16 Bit / 48000 kHz 90885 Sounddogs Sound Library 1.0
17 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,GrandAm,Honk,Med,Stati Sound Effects Waveform Horn,GrandAm,Honk,Med,Stati.wav $ 2.00* Alarm, Horn: Horn GrandAm Honk Med Static Alarm Alarm Horn 0:01 16 Bit / 48000 kHz 90869 Sounddogs Sound Library 2.0
18 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Boat,1,Long,3,Short,Ec Sound Effects Waveform Horn,Boat,1,Long,3,Short,Ec.wav $ 4.00* Alarm, Horn: Horn Boat 1 Long 3 Short Echo Alarm Alarm Horn 0:16 16 Bit / 48000 kHz 90853 Sounddogs Sound Library 1.0
19 Rob Nokes Sound Library Sounddogs Alarm Category, Alarm Air Horn Air Horn,Blast,Dist,Detuned Sound Effects Waveform Air Horn,Blast,Dist,Detuned.wav $ 2.00* Alarm, Air Horn: Air Horn Blast Distant Detuned Alarm Alarm Air Horn 0:01 24 Bit / 48000 kHz 21957 Rob Nokes Sound Library 1.0
20 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Doppler,Grand,3 Honks  Sound Effects Waveform Horn,Doppler,Grand,3 Honks .wav $ 4.00* Alarm, Horn: Horn Doppler Grand 3 Honks By Alarm Alarm Horn 0:21 16 Bit / 48000 kHz 90864 Sounddogs Sound Library 2.0
21 Rob Nokes Sound Library Sounddogs Alarm Category, Alarm Air Horn Air Horn,Blast,Short Sound Effects Waveform Air Horn,Blast,Short.wav $ 2.00* Alarm, Air Horn: Air Horn Blast Short Alarm Alarm Air Horn 0:02 24 Bit / 48000 kHz 21968 Rob Nokes Sound Library 1.0
22 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Truck,Single,Long,Nasa Sound Effects Waveform Horn,Truck,Single,Long,Nasa.wav $ 2.00* Alarm, Horn: Horn Truck Single Long Nasal Alarm Alarm Horn 0:03 16 Bit / 48000 kHz 90891 Sounddogs Sound Library 1.0
23 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Party,Blow,Squeaky,Up Sound Effects Waveform Horn,Party,Blow,Squeaky,Up.wav $ 2.00* Alarm, Horn: Horn Party Blow Squeaky Up Alarm Alarm Horn 0:01 16 Bit / 48000 kHz 90875 Sounddogs Sound Library 2.0
24 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Boat,Tug,1,Airy,Echo Sound Effects Waveform Horn,Boat,Tug,1,Airy,Echo.wav $ 3.00* Alarm, Horn: Horn Boat Tug 1 Airy Echo Alarm Alarm Horn 0:09 16 Bit / 48000 kHz 90859 Sounddogs Sound Library 2.0
25 Rob Nokes Sound Library Sounddogs Alarm Category, Alarm Air Horn Air Horn,Blast,Dist Sound Effects Waveform Air Horn,Blast,Dist.wav $ 2.00* Alarm, Air Horn: Air Horn Blast Distant Alarm Alarm Air Horn 0:02 24 Bit / 48000 kHz 21963 Rob Nokes Sound Library 1.0
26 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Toot,Honk,High Sound Effects Waveform Horn,Toot,Honk,High.wav $ 2.00* Alarm, Horn: Horn Toot Honk High Alarm Alarm Horn 0:01 16 Bit / 48000 kHz 90886 Sounddogs Sound Library 2.0
27 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Harley,By,Fast,Annoyin Sound Effects Waveform Horn,Harley,By,Fast,Annoyin.wav $ 3.00* Alarm, Horn: Horn Harley By Fast Annoying Alarm Alarm Horn 0:09 16 Bit / 48000 kHz 90870 Sounddogs Sound Library 2.0
28 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Boat,1,Short,1,Huge,De Sound Effects Waveform Horn,Boat,1,Short,1,Huge,De.wav $ 2.00* Alarm, Horn: Horn Boat 1 Short 1 Huge Deep Alarm Alarm Horn 0:05 16 Bit / 48000 kHz 90854 Sounddogs Sound Library 1.0
29 Rob Nokes Sound Library Sounddogs Alarm Category, Alarm Air Horn Air Horn,Blast,Dist,Falter Sound Effects Waveform Air Horn,Blast,Dist,Falter.wav $ 2.00* Alarm, Air Horn: Air Horn Blast Distant Falter Alarm Alarm Air Horn 0:01 24 Bit / 48000 kHz 21958 Rob Nokes Sound Library 1.0
30 Sounddogs Sound Library Sounddogs Alarm Category, Alarm Horn Horn,Squeak,Rubber Duck,Hig Sound Effects Waveform Horn,Squeak,Rubber Duck,Hig.wav $ 2.00* Alarm, Horn: Horn Squeak Rubber Duck High Alarm Alarm Horn 0:01 16 Bit / 48000 kHz 90881 Sounddogs Sound Library 2.0