New sim, no sound bug?

Back in October 2019 we reported that hotfix 2 for Prepar3D version 4.5 re-introduced a bug/feature impacting the doppler effect. Here we are, almost a year later, a major version update with 2 hotfixes already being released and it is still contained within the application.


Hopefully this will be fixed soon. In the meantime, you can still fix it yourself using the howto in our original article on the subject.



Born out of passion for aircraft engine noise, SimAcoustics was established in 2019 to cater to the needs of add-on developers for modern flight simulator software such as Flight Simulator X, Prepar3D and X-Plane. In 2020 we added ready made sound packages for end-users to our portfolio.


No matter the scenario, our goal is to immerse the end-user through highly authentic sound environments that push the limits of the respective sound system.


Want to have a listen? Check out our channel on YouTube!