Are you fed up with Asobo turning every other airplane into a polite cough from three hangars away? Do you hate it when a 777 on the taxiway is quieter than your wife snoring through a closed door? Then download this.

TRAFFIC AUDIO - Real engine recordings. Real physics. Every aircraft in the sky, placed in 3D and mixed live, 20 times a second.

Not a synth. Not a beep. Not a slider pretending to be distance. Traffic Audio silences the leftover MSFS AI engine noise and replaces it with the real thing: multi-layer recordings of the intake, fan, sideline, exhaust and rumble of each engine, played back the way the sound designers authored them. Then it puts every jet in a physical model of the air between it and you. Tested with Rokit KRK Studio speakers. Turn up your bass and you will be blown off your chair, captain. Works with any traffic library like FSLTL or AIG.

GET STARTED IN MINUTES

1. Start the little always-on-top panel
2. Follow the two-step setup: pick your Community folder, hit Silence MSFS traffic (once, and before you start the simulator), then switch it on
3. Leave it running

Default MSFS traffic: also set Options → Sound → Other Aircraft to 0. Silence covers leftover add-on traffic. Default Asobo traffic still uses that slider. Leave it at 0 or you hear both. One stream. Speakers or headphones. Master / exterior / interior volume. The settings sit in tabs, so the panel stays small.

THE SOUND Engine sound banks (AITRSP, with FTSiM and SkyHigh as fallbacks) hold several recordings per engine. Each file carries its own authored curves:

• volume against engine power (N1): a file only opens at the thrust it was recorded for
• pitch against engine power: the whine climbs like the real engine
• the direction and the distance it was recorded from

Traffic Audio reads and uses them as written. Nothing is boosted. A soft limiter catches the peaks when a whole ramp of aircraft spools up at once.

TWO ANGLES, NOT ONE SLIDER Asobo mashed these together. I did not.

• Nose toward you → inlet / fan / whine
• About 90° → sideline mix
• Tail toward you → exhaust in a rear cone (~120–150° from the nose), not a hose out the tailpipe

The mix uses the true angle between the plane's nose and you, including climb and descent, and blends the recordings smoothly as that angle changes. A jet coming at you is loud. A flypast never sounds like it comes from behind. Turning the camera only pans the image and dulls what's behind you, exactly like your head does: a low-pass filter shaped like real head shadow takes the treble off sources behind you. Pointing the view at a tail-on jet does not turn it into an inlet. The "Rear cue" slider sets the strength.

PHYSICS, NOT GUESSWORK

• 20 km horizon, with taxi rumble still there at ~5 km
• Level follows ISO 9613 outdoor sound: spherical spreading (about 6 dB quieter for every doubling of distance), air absorption (ISO 9613-1) and ground effect (ISO 9613-2)
• Air eats the top end first, using the sim's own temperature, pressure and humidity. Far away you keep the rumble and the whine dies. Every recording has its own low-pass filter that closes with distance
• Loudness follows thrust with a 40·log10 law of engine power. Idle to takeoff is the same jump at 50 m or at 5 km
• Sound travels at about 340 m/s, so a jet 12 km out is the sound from ~35 seconds ago. Each aircraft is heard from where it was when the sound left it, not where it is now
• Doppler shift on the pitch, kept in a sane range. A flypast slides down like a real one. No cartoon rumble
• Big aircraft spread across your speakers up close and shrink to a point with distance
• 64 simultaneous voices, and stereo stays stereo

ENGINES THAT ACT LIKE ENGINES

• Start-up, running and shutdown are read from the sim and debounced, so nothing flickers on and off
• Shutdown winds down over seconds, not instantly
• Start-up and shutdown sounds play for their whole length

INSIDE THE AIRPLANE You are not wearing the engines as a hat.

• The hull is a low-pass filter at about 220 Hz
• Rumble leaks in, fan / whine does not (about −18 dB residual)
• No cockpit files played as traffic
• ChasePlane cabin views are followed

SUPPORT https://discord.gg/dMQqsFdZnf MSFS 2024 only. This application is not compatible with MSFS 2020.