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Will we get sonic boom sounds from the surface of planets if a ship flies fast enough and with sufficient air in the atmosphere to cause it?

TL;DRReal sonic booms are impractical to model fully in audio, but an implied sonic boom could be built into the existing pass-by system, needs assets made, and is something they want to do.

Phil Peers-SmallwoodLead Sound Designer

So we try and be as systemic as possible. And actually, we did some research into sonic booms. So if you're stationary and an aircraft is flying faster than or at the speed of sound, you perceive it as a boom as it passes by you. But actually, that noise is just wafting over the entire surface. So it'd be like a constant scream or loud noise. So do we try and build a system that would calculate air density, speed of the aircraft, and try and model it accurately? It goes a bit above and beyond what we can do in the audio department, but we can certainly do implied stuff. So we have context like: there is a ship in atmosphere, the atmosphere is of X density, it's going at X speed. When it passes by you, we can create an implied sonic boom. We have a very similar system with flybys, and some really great videos of people flying past each other as close as possible. You hear these one-shots and the design of those is awesome. They're really impactful. But Josh has been doing a lot of the stuff with IFCS 2 and a lot of ship stuff, so I don't know if you've got anything to add.

Josh BellSound Designer

I can imagine it would be something that we could build into the pass-by system that's already there and just swap these assets in when we're in atmosphere rather than building a whole new system for it. Pretty much could do it within that. It would just require some time to actually make the assets for it. It is certainly something that we want to do because it's that quintessential atmospheric flight experience that would really separate it from space.

Jared HuckabyHost, Community

Of course, it would have to be different depending on which moon or planet you're on. Some moons obviously have no atmosphere at all. Some moons have completely breathable atmospheres. Same with planets. It would be an interesting challenge not just to design a sonic boom system, but to design a sonic boom system that is different and signature to every environment.

Phil Peers-SmallwoodLead Sound Designer

And how would that sound? Because sound travels faster through denser mediums. Sound travels like two or three times faster in water than it does in air. So if we're dealing with different densities of atmosphere, how would that sound? Would it propagate for less distance if there's a thinner medium for it to go through?

Josh BellSound Designer

Depends on the temperature as well, doesn't it?

Phil Peers-SmallwoodLead Sound Designer

Yeah, well, that's the thing. We've got this whole universe to put sound to. And it's like, how does it sound? We don't know because we've not been able to recreate those test environments. But we do our best to make it sound cool as much as possible. With the sonic boom stuff, though, I think that would be pretty cool as gameplay feedback. So say on the weapon side, if you hear a sonic boom from an aircraft or a spaceship moving, that would give you an audio indicator that it's moving at a certain speed. So then you can say, well, I know sonically I can engage with that with this weapon or not, or know how fast they're moving kind of thing. So that'd be cool.

Reverse the Verse›LIVE - The Sounds of Space·
Published on this date.15 Feb 2019
EpisodeAudioPhysics