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I’m having an issue where loud sounds drown out other sounds, so whenever there is a lot of action in the game the music (and other sounds) is almost completely silent. This isn’t an issue with a max number of channels, because the sounds still play, just very quietly.
Is there some built in ducking or max volume or something like that?

  • Joseph Harvey

    There is no feature in FMOD Studio that automatically ducks certain events based on the quantity and loudness of other events. However, I’m not sure I understand this question; Why shouldn’t loud sounds drown out quieter ones? Have you tried adjusting your project’s mix in the mixer, and what happened when you did?

  • Niklas Myrberg

    Maybe it should happen, I don’t know, but it certainly sounds weird. I’m not sure what I can do in the mix to change it, boosting the volume of the music helps a bit, but the underlying issue is still there. Here is a demonstration: https://www.youtube.com/watch?v=gfeF3I0bWF8
    We tried creating a fresh project and just adding three events, music, shoot and hit. The issue is still there, so the issue does not seem to be some sidechain or snapshot or anything like that.

  • Joseph Harvey

    The behaviour in that video definitely seems wrong, but it’s hard to determine the cause; It’s possible that your sound driver or operating system may have a built-in compressor or limiter that automatically kicks in when the volume exceeds a certain value. Does the problem still occur if you reduce your project’s master bus volume?

  • Joseph Harvey

    If adjusting the master bus volume doesn’t solve your problem, please record a profiler session of your game exhibiting this problem, package your project (using the ‘File > Package Project…’ menu item), and send it to support@fmod.com; This will allow us to inspect what’s going on under-the-hood.

  • Niklas Myrberg

    So the problem doesn’t exist on Linux, and if we lower the master bus then it does disappear. Thanks!

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Best Answer
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The problematic behaviour is due to the operating system automatically ducking or limiting audio output over a certain volume. To prevent this from occurring, reduce the output volume of your project.

To reduce the output volume of your project without otherwise altering the mix, reduce the project’s master bus volume.

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Perhaps the default 3D panning module on your mixer is altering things unexpectedly? I found it strange that it was even ON by default, since it seriously alters the mix on music by playing with the stereo separation.

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