Every driver knows the sound of a car horn, but few understand the technical differences between siren and klaxon-type horns. This knowledge helps buyers make informed decisions.
Sirens produce wailing tones through rotating mechanisms (electrical or mechanical), while klaxons create distinctive "ah-oo-gah" sounds using vibrating metal diaphragms - each serves different warning purposes.

What is the Car Horn Sound Called?
The characteristic sound of car horns has specific names depending on their design and purpose, with important implications for safety communication.
Common horn sound types:
- Klaxon: The classic "ah-oo-gah" sound
- Fanfare: Short musical chord bursts
- Hi-Lo: Alternating high-low tones
- Air horn: Deep, powerful blasts
- Electronic: Custom digital tones

Horn Sound Characteristics
| Sound Type | Frequency Range | Typical Volume | Best Use Case |
|---|---|---|---|
| Klaxon | 400-800Hz | 110dB | Vintage/classic cars |
| Dual-tone | 500-800Hz mix | 115dB | Modern passenger cars |
| Air horn | 200-400Hz | 130dB | Trucks/emergency vehicles |
| Electronic | Programmable | 105-120dB | Luxury vehicles |
| Siren | 600-2000Hz | 120dB | Emergency vehicles |
Key considerations:
- Local noise regulations
- Sound distinctiveness
- Installation space
- Power requirements
- Brand image alignment
What Makes the Honk Sound in a Car?
The honking sound originates from carefully engineered components working together to create audible warnings that cut through traffic noise.
Core sound-producing components:
- Electromagnetic coil (vibrates diaphragm)
- Resonator chamber (amplifies sound)
- Diaphragm (metal disc that vibrates)
- Tone generator (sets frequency)
- Mounting bracket (affects sound projection)

Sound Production Comparison
| Component | Klaxon | Siren | Modern Electric |
|---|---|---|---|
| Vibration Source | Metal diaphragm | Rotating chopper | Electromagnetic coil |
| Sound Chamber | Open trumpet | Enclosed rotor | Tuned resonator |
| Frequency Control | Diaphragm size | Rotation speed | Electronic circuit |
| Volume Control | Hand pressure | Motor speed | Voltage regulation |
| Maintenance | Frequent | Moderate | Minimal |
Technical factors:
- Diaphragm thickness
- Chamber acoustics
- Electrical current
- Mounting position
- Environmental protection
Why Does it Matter for Buyers?
Understanding these differences helps buyers select the right horn type for their specific needs, budget, and vehicle requirements.
Key purchasing considerations:
- Legal compliance (local sound regulations)
- Vehicle compatibility (power/space)
- Usage frequency (durability needs)
- Climate conditions (weather resistance)
- Brand positioning (sound signature)

Purchasing Decision Matrix
| Need | Recommended Type | Why | Price Range |
|---|---|---|---|
| Daily driver | Dual-tone electric | Reliable, legal | $15-$50 |
| Classic car | Authentic klaxon | Period-correct | $80-$200 |
| Commercial use | Air horn system | Maximum volume | $120-$400 |
| Luxury vehicle | Electronic module | Custom sounds | $150-$500 |
| Extreme climates | Marine-grade | Weatherproof | $75-$300 |
Quality indicators:
- Copper wound coils
- Stainless steel hardware
- IP67 rating
- Vibration resistance
- Certification marks
Conclusion
From technical sound production to practical purchasing factors, understanding horn differences ensures you choose the perfect warning device for your vehicle and needs.