Can hot air replicate the sound effects of exhaust gases?

In summary, hot air can be used to produce the sound effects of exhaust gases from an electric car, but it is not likely to produce any significant acoustic differences.
  • #1
Khumo
4
0
Hey guys, is it possible to replicate the sounds produced by exhaust gases in a car by using only hot air? Thanks in advance for your responses.
 
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  • #2
Is this about just getting 'sound effects' or is it about some scientific test or experiment ?

Tell us more in any case .
 
  • #3
Suppose we replace the exhaust gases by air. The composition is different, but both of them still contain mostly nitrogen. How does the speed of sound, the density and the acoustic impedance change if part of the oxygen is replaced by CO2 and H2O ? There will be differences in the acoustics, but it is probably not large.
 
  • #4
Nidum said:
Is this about just getting 'sound effects' or is it about some scientific test or experiment ?

Tell us more in any case .
Nidum said:
Is this about just getting 'sound effects' or is it about some scientific test or experiment ?

Tell us more in any case .
Thanks for the responses, basically I wanted to know if it would be possible to harness the heat generated by electric motors & batteries and channel to produce sound so that electric cars would sound just like conventional IC engine cars.
 
  • #5
You could generates the sounds in the passenger compartment electronically just using loudspeaker systems .

Nice idea in principle though . Anyone with a modern boring box on wheels could choose to program in their choice of car sounds .

Imagine a Mondeo that sounded like a race tuned 6 1/2 litre Blower Bentley .
 
  • #6
I'm guessing that Khumo is less interested in esoteric aesthetic sounds than in road safety.
Porsche and VW cars have had air cooling for IC engines in the past, but I don't know if that produced much sound.
If these electric cars need some forced air cooling, maybe it could be made deliberately noisy without wasting to much power.
I think the original question is a bit off track, as the sound of IC engine exhaust has more to do with the pulsed gas flow forced by the IC process, than to do with the fact that the gases are hot or anything to do with their chemistry. Electric motors'cooling air would more likely come in a continuous stream with only turbulence noise. But if it were driven by a rotary blower, perhaps a small cyclical bleed - like old WW2 mechanical sirens - could produce a pulsed air flow to a resonant tube and matching horn?
 
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Related to Can hot air replicate the sound effects of exhaust gases?

1. Can hot air produce the same sound effects as exhaust gases?

No, hot air and exhaust gases are two different substances with different properties. Hot air is a mixture of gases, primarily nitrogen and oxygen, while exhaust gases are a byproduct of combustion and contain various chemicals and particles. The sound effects produced by exhaust gases are a result of the chemical reactions and pressure changes during combustion, which cannot be replicated by hot air.

2. Is it possible to use hot air to mimic the sound of a car engine?

No, hot air does not have the necessary components to replicate the complex sound of a car engine. Car engines produce sound through the movement of pistons, valves, and other mechanical components, which cannot be simulated by hot air. Additionally, the sound of a car engine is also influenced by the exhaust system, which is not present in hot air.

3. Can hot air be used to create the sound of a jet engine?

No, jet engines produce sound through the rapid expansion of exhaust gases, which creates shockwaves and turbulence. Hot air does not have the same properties as exhaust gases and cannot replicate this sound. Additionally, jet engines also have various mechanical components that contribute to the sound, which cannot be replicated by hot air.

4. Are there any similarities between the sound effects of hot air and exhaust gases?

While hot air and exhaust gases produce different sounds, they both can create noise when moving at high speeds. This is because the movement of any gas at high velocity can cause turbulence and create a sound. However, the specific sound effects produced by hot air and exhaust gases are different due to their composition and properties.

5. Can hot air be used to create realistic sound effects in movies or video games?

No, hot air cannot replicate the sound effects of exhaust gases in movies or video games. These industries use advanced sound design techniques and technologies to create realistic sound effects, which cannot be achieved with hot air. Additionally, using hot air as a sound effect may not be safe or practical on set or during a video game production.

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